Blue team Science Portfolio
By: Enea Veizaj
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QUIZ: Motion
Name: ________________________ Date:
___________
Formulas:p
A = v2 -v1 T2 V2 = V1 + (a * T) T = V2 - V1a
After traveling for 14.0 seconds, a bicyclist reaches a speed of 89 m/s.
What is the runner’s acceleration?
A = v2 - v1/T2
A = 89 m/s - 0 m/s14 sec.
A = 6.35714286 m/s
A car starting from rest accelerates at a rate of 18.0 m/s/s. What is its final
speed at the end of 5.0 seconds?
V2 = V1 + (a * T)
V2 = 0 m/s + (18.0 m/s2 * 5 sec.)
V2 = 90m/s
A cyclist accelerates at a rate of 16.0 m/s2. How long will it take the cyclist
to reach a speed of 49 m/s?
T = V2 - V1/a
T = 49 m/s - 0 m/s16 m/s2
T = 3.0625 m/s
Hans stands at the rim of the Grand Canyon and yodels down to the
bottom. He hears his yodel back from the canyon floor 6.0 s later. Assume
that the speed of sound in air is 740.0 m/s. How deep is the canyon?
D = V * T
D = 740 m/s * 3.0 sec.
D = 2220 m/s
The tortoise and the hare are in a road race to defend the honor of their
breed. The tortoise crawls the entire 1000. m distance at a speed of 0.35
m/s while the rabbit runs the first 200.0 m at 1.85 m/s The rabbit then
stops to take a nap for 1.200 hr and awakens to finish the last 800.0 m with
an average speed of 4.2 m/s. Who wins the race and by how much time?
Tortoise:
Tortoise
T = D/V
T = 1000 m/0.35 m/s
T = 2857.1
seconds
Rabbit 1st
T = D/V
T = 200 m/1.85 m/s
T = 108.1
sec.
Rabbit 2nd
1.2 hr * 3600 sec.
T = 4320sec.
Rabbit 3rd
T = D/V
T = 800 m/4.2 m/s
T = 190.5sec.
Question: Which animal wins the race? Evidence
The fastes animal to win the race is Rabbit 1st, with a time of 108.1 which
is faster than the other animals time.
What is the Acceleration of the Cart on the Ramp? Determine the Angle of
the Ramp (A).
Angle Chart:
https://drive.google.com/open?id=0B4RmhXJlHvo1YXZhcDNMSDNSMXc
Which Angle had the greatest Acceleration? Write a Conclusion based on
your findings. Create a Graph if you have time.Graph:
Height of Ramp
(Opposite)
Dist. 1
Time 1
Velocity 1
Dist. 2
Time 2
Velocity 2
Acceleration
50 m
100 m
10 sec.
V = D/T
V = 100/10
V = 10
100 m
5 sec.
V = D/T
100/5
V = 20 m/s
A = 20-10/5
2 m/s2
100 m
100 m
5 sec.
V = D/T
100/5
V=20 m/s
100 m
2 sec.
V=D/T
100/2
V=50 m/s
15 m/s2
Conclusion:
The purpose of this lab was to find out which ramp had the greatest
acceleration. The hypothesis was that if then angle increases then the
acceleration __________. Data from the 2 examples in data table to prove
your hypothesis,
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QUIZ: Phase Changes 2017
Calculate Heat Energy:
Apply the following Equations:
Heat = Mass * Heat of Fusion
Heat = Mass * Change in Temperature * SH
Heat = Mass * Heat of Vaporization
Data Table:
Metal
Mass
Heat of Fusion
(cal/g)
Melting Pt. (C)
Boiling Pt. (C)
Heat of Vaporization
(cal/g)
Specific Heat (cal/gC)
Heat Energy
(cal)
Water
37 g
80
0
100
540
1
Silver
37 g
26
961
2212
2356
0.057
Directions: Determine the Heat Energy required to completely evaporate the
substances in the data table.
*SHOW ALL MATH STEPS
Math Steps (____ out of 4)
Water
Heat= m * Hfustion
Heat= 37g * 80 cal/g
Heat= 2960 Calories
It is now a Liquid
+
MP to BP
Heat= m * Change in Temperature * SH
Heat= 37g * 100C * 1 Cal/gC
Heat= 3700 Calories
+
Heat=m * Hvaporization
Heat=37g * 540 cal/g
Heat= 19980 Calories
Total= 26640 Calories
Scientific Notation:
B. Silver
Heat= m * Hfustion
Heat=37g * 26 cal/g
Heat=962 Calories
MP to BP
Heat=m * Change in Temperature * SH
Heat=37g * 1251C * 0.057 cal/gC
Heat= 2638.359 Calories
Heat=m * Hvaporization
Heat=37g * 2356 cal/g
Heat= 87172 Calories
Total= 90772.359 Calories
Scientific Notation:
Graph your Results:
Writing (_____ out of 4)
Questions:
How are Heat and Temperature different for the following pictures of
boiling water? Explain: (Hint: Use the Heat equation) Heat is the total
energy of molecular motion in a substance while temperature is a measure
of the average energy of molecular motion in a substance.
2. How can you use the unit (cal/gC) to explain the difference between
Water and Silver?
Calories describes how much energy your body could get from eating or
drinking So you know if it is water or food. And gC is how heavy something
is and what type of material it is.
3. Would it be possible for there to be solid oxygen on another planet?
Explain:
Oxygen Melting Point: -218 C = -35
Oxygen Boiling Point: -183 C = -35
No because the melting point could not Exist on another planet besides
earth.
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QUIZ: Motion
Name: ________________________ Date:
___________
Formulas:p
A = v2 -v1 T2 V2 = V1 + (a * T) T = V2 - V1a
After traveling for 14.0 seconds, a bicyclist reaches a speed of 89 m/s.
What is the runner’s acceleration?
A = v2 - v1/T2
A = 89 m/s - 0 m/s14 sec.
A = 6.35714286 m/s
A car starting from rest accelerates at a rate of 18.0 m/s/s. What is its final
speed at the end of 5.0 seconds?
V2 = V1 + (a * T)
V2 = 0 m/s + (18.0 m/s2 * 5 sec.)
V2 = 90m/s
A cyclist accelerates at a rate of 16.0 m/s2. How long will it take the cyclist
to reach a speed of 49 m/s?
T = V2 - V1/a
T = 49 m/s - 0 m/s16 m/s2
T = 3.0625 m/s
Hans stands at the rim of the Grand Canyon and yodels down to the
bottom. He hears his yodel back from the canyon floor 6.0 s later. Assume
that the speed of sound in air is 740.0 m/s. How deep is the canyon?
D = V * T
D = 740 m/s * 3.0 sec.
D = 2220 m/s
The tortoise and the hare are in a road race to defend the honor of their
breed. The tortoise crawls the entire 1000. m distance at a speed of 0.35
m/s while the rabbit runs the first 200.0 m at 1.85 m/s The rabbit then
stops to take a nap for 1.200 hr and awakens to finish the last 800.0 m with
an average speed of 4.2 m/s. Who wins the race and by how much time?
Tortoise:
Tortoise
T = D/V
T = 1000 m/0.35 m/s
T = 2857.1
seconds
Rabbit 1st
T = D/V
T = 200 m/1.85 m/s
T = 108.1
sec.
Rabbit 2nd
1.2 hr * 3600 sec.
T = 4320sec.
Rabbit 3rd
T = D/V
T = 800 m/4.2 m/s
T = 190.5sec.
Question: Which animal wins the race? Evidence
The fastes animal to win the race is Rabbit 1st, with a time of 108.1 which
is faster than the other animals time.
What is the Acceleration of the Cart on the Ramp? Determine the Angle of
the Ramp (A).
Angle Chart:
https://drive.google.com/open?id=0B4RmhXJlHvo1YXZhcDNMSDNSMXc
Which Angle had the greatest Acceleration? Write a Conclusion based on
your findings. Create a Graph if you have time.Graph:
Height of Ramp
(Opposite)
Dist. 1
Time 1
Velocity 1
Dist. 2
Time 2
Velocity 2
Acceleration
50 m
100 m
10 sec.
V = D/T
V = 100/10
V = 10
100 m
5 sec.
V = D/T
100/5
V = 20 m/s
A = 20-10/5
2 m/s2
100 m
100 m
5 sec.
V = D/T
100/5
V=20 m/s
100 m
2 sec.
V=D/T
100/2
V=50 m/s
15 m/s2
Conclusion:
The purpose of this lab was to find out which ramp had the greatest
acceleration. The hypothesis was that if then angle increases then the
acceleration __________. Data from the 2 examples in data table to prove
your hypothesis,
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Unit 1: Uniform MotionName_______________________________
Worksheet 8 Date__________________Period________
Speed and Velocity Problems
What is the average speed of a cheetah that sprints 100 m in 4 s? How
about if it sprints 50 m in 2 s?
V = D/T
V = 100 m/4 sec
V = 25 m/s
If a car moves with an average speed of 60 km/hr for an hour, it will travel a
distance of 60 km. How far will it travel if it continues this average rate for
4 hrs?
D = V * T
D = 60 km/hr * 4 hrs
D = 2400
A runner makes one lap around a 200 m track in a time of 25.0 s. What
was the runner's average speed? Answer: 8.0 m/s
V = D/T
V = 60km/25.5s
V = 2.4
Light and radio waves travel through a vacuum in a straight line at a speed
of very nearly 3.00 × 108 m/s. How far is light year (the distance light
travels in a year)? Answer: 9.50 × 1015 m.
D = V*T
D = (3.00 X 108 m/s)(3.15*107)
D =
A motorist travels 406 km during a 7.0 hr period. What was the average
speed in km/hr and m/s? Answers: 58 km/hr, 16 m/s.
V = D/T
V = 406km/7hr
V = 58
A bullet is shot from a rifle with a speed of 720 m/s. What time is required
for the bullet to strike a target 3240 m away? Answer: 4.5 s.
V = D/T
V = 3240/720
V = 4.5
Light from the sun reaches the earth in 8.3 minutes. The speed of light is
3.0 × 108 m/s. In kilometers, how far is the earth from the sun?
Answer: 1.5 × 108 km.
D = V*T
D = 108*498
D = 53784
*An auto travels at a rate of 25 km/hr for 4 minutes, then at 50 km/hr for 8
minutes, and finally at 20 km/hr for 2 minutes. Find the total distance
covered in km and the average speed for the complete trip in m/s.
Answers: 9 km, 10.7 m/s.
D =
*If you traveled one mile at a speed of 100 miles per hour and another mile
at a speed of 1 mile per hour, your average speed would not be (100 mph +
1 mph)/2 or 50.5 mph. What would be your average speed? (Hint: What is
the total distance and total time?) Answer: 1.98 mph.
*What is your average speed in each of these cases?
You run 100 m at a speed of 5.0 m/s and then you walk 100 m at a speed
of 1.0 m/s.
You run for 100 s at a speed of 5.0 m/s and then you walk for 100 s at a
speed of 1.0 m/s. Answers: 1.7 m/s, 3.0 m/s.
*A race car driver must average 200 km/hr for four laps to qualify for a
race. Because of engine trouble, the car averages only 170 km/hr over the
first two laps. What average speed must be maintained for the last two
laps?
*A car traveling 90 km/hr is 100 m behind a truck traveling 50 km/hr. How
long will it take the car to reach the truck?
The peregrine falcon is the world's fastest known bird and has been
clocked diving downward toward its prey at constant vertical velocity of
97.2 m/s. If the falcon dives straight down from a height of 100. m, how
much time does this give a rabbit below to consider his next move as the
falcon begins his descent?
More Speed and Velocity Problems
Hans stands at the rim of the Grand Canyon and yodels down to the
bottom. He hears his yodel back from the canyon floor 5.20 s later.
Assume that the speed of sound in air is 340.0 m/s. How deep is the
canyon?
The horse racing record for a 1.50 mi. track is shared by two horses: Fiddle
Isle, who ran the race in 143 s on March 21, 1970, and John Henry, who ran
the same distance in an equal time on March 16, 1980. What were the
horses' average speeds in:
mi/s?
mi/hr?
For a long time it was the dream of many runners to break the "4-minute
mile." Now quite a few runners have achieved what once seemed an
impossible goal. On July 2, 1988, Steve Cram of Great Britain ran a mile in
3.81 min. During this amazing run, what was Steve Cram's average speed
in:
mi/min?
mi/hr?
It is now 10:29 a.m., but when the bell rings at 10:30 a.m. Suzette will be
late for French class for the third time this week. She must get from one
side of the school to the other by hurrying down three different hallways.
She runs down the first hallway, a distance of 35.0 m, at a speed of 3.50
m/s. The second hallway is filled with students, and she covers its 48.0 m
length at an average speed of 1.20 m/s. The final hallway is empty, and
Suzette sprints its 60.0 m length at a speed of 5.00 m/s.
Does Suzette make it to class on time or does she get detention for
being late again?
Draw a distance vs. time graph of the situation. (Assume constant
speeds for each hallway.)
During an Apollo moon landing, reflecting panels were placed on the moon.
This allowed earth-based astronomers to shoot laser beams at the moon's
surface to determine its distance. The reflected laser beam was observed
2.52 s after the laser pulse was sent. The speed of light is 3.0 × 108 m/s.
What was the distance between the astronomers and the moon?
For many years, the posted highway speed limit was 88.5 km/hr (55 mi/hr)
but in recent years some rural stretches of highway have increased their
speed limit to 104.6 km/hr (65 mi/hr). In Maine, the distance from Portland
to Bangor is 215 km. How much time can be saved in making this trip at
the new speed limit?
The tortoise and the hare are in a road race to defend the honor of their
breed. The tortoise crawls the entire 1000. m distance at a speed of
0.2000 m/s while the rabbit runs the first 200.0 m at 2.000 m/s The rabbit
then stops to take a nap for 1.300 hr and awakens to finish the last 800.0 m
with an average speed of 3.000 m/s. Who wins the race and by how much
time?
Two physics professors challenge each other to a 100. m race across the
football field. The loser will grade the winner's physics labs for one month.
Dr. Rice runs the race in 10.40 s. Dr. De La Paz runs the first 25.0 m with an
average speed of 10.0 m/s, the next 50.0 m with an average speed of 9.50
m/s, and the last 25.0 m with an average speed of 11.1 m/s. Who gets
stuck grading physics labs for the next month?
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Scientific Method
Directions: Read the following description of an experiment and complete
the components of the scientific method.
Experiment:
Option #1: P atrick believed that fish would become smarter and complete
a maze faster if they ate food that was placed in a microwave first. He had
100 fish that he could use for the experiment. He evaluated their
intelligence based on their time to complete the maze.
Option #2: Mr. Smithers believed that Caffeine may make people more
alert. Mr. Smithers tested 100 people by using their scores in the same
video game. Devin had 3 different brands of drinks with 10 g, 20 g, and 30
g of caffeine respectively. He measured their scores on a video game that
had a range of 0-1000 points. Some of the players were not given caffeine
drinks. on the game
*Help Mr. Smithers design an effective experiment and write a conclusion
that analyzes your results.
Problem Statement
If Patrick believes that if the fishes eat microwaved fish food them they
will pass the maze faster swim faster.
Hypothesis
The fish will swim faster if they eat microwaved foods, Then they
will pass the maze faster.
Independent Variable
The cooked food
that were
microwaves
Dependent Variable
The time they swim
Constants (Pick 2) The fish
The time that the finish the maze
Control
The maze that the fish have to complete
Basic Procedures:
(List 5-8 steps)
1. Purpose
2.Hypothesis
3.Variable
4.Data
5.Improvement
6.Conclusion
Data Table: (Place data table here)
Time of the maze The food the fish did Fish that ate cooked
not eat that was not food
cooked food
2-5 mins
8- 4 mins
Hypothesis: The fish that did not eat cooked food will finish the maze the
fastest
Graph: (Place graph here)
Conclusion:
Purpose, Hypothesis, Description, Data or evidence, Improvements,
Conclusion
The purpose of this is to see if cooked food will help fish swim faster or not
cooked food. My hypothesis is that the fish that did not eat cooked food will
be the faster one to finish the maze.The fish that did not eat cooked food
finished faster than the fish that did eat cooked food. In the data it shows
the fish that did and did not eat cooked food is 8 ½, Also the time they
passed the maze was 2 mins.
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I. Investigation Design
A. Problem Statement:
How do you use density to identify unknown mentals
B. Hypothesis:
If density is known then unknown metals can be correctly identified.
Because every mental has its own specific metal
C. Independent Variable: x
Levels of IV
copper bronze aluminum zinc brass tin
D. Dependent Variable:y
Density (g/cm>)
E. Constants: Balance Procedures
Water
F. Control:
Water (1g/cm3 )
G. Materials: (List with numbers)
1.
H. Procedures: (List with numbers and details)
1.
II. Data Collection
A. Qualitative Observations:
B. Quantitative Observations: (Key data)
1. Data Table
2. Graph
3. Calculations
Show 3 Math Examples
Copper
D = m/v
D= 27 g
3 cm3
D = 9 g/cm3
III. Data Analysis/Conclusion
IV. Research and Applications
5 6-8 sentences about your topic
*How does Density relate to Plate Tectonics?
V. References and Citations
● 2 or 3 web links
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QUIZ: Classifying Matter
I. Directions: I dentify the following as either a Heterogeneous Mixture,
Homogeneous Mixture, Element or Compound. Write the following letters
in Column B for your choices:
A. Heterogeneous
B. Homogeneous
C. Element
D. Compound
Column A Column B
Salad A
Copper C
Lemonade C
Rocks, sand, gravel A
Salt Water B
Gold D
Sodium Chloride (NaCl) B
Air (Oxygen, nitrogen, carbon C
monoxide…)
K2S O4 C
B
Twix, snickers, pretzels, popcorn in
a bag
II. Directions: Determine the Mass % of each mixture and construct the
appropriate graphs.
Mixture A Mass (g) %
Large Rocks 125 52%
Small Rocks 75 32%
Coarse Sand 32 75%
Iron 9 27%
Mixture B Mass (g) %
Large Rocks 205 18%
Small Rocks 58 67%
Coarse Sand 97 40%
Iron 29
7%
Calculation Examples (Provide 2 Examples showing how you determined
the Mass %)
Graphs:
Mixture A
Mixture B
Part III. Determine the Mass % of Elements in each Compound:
K2S O4 - Potassium Sulfate
(Show Math Here)
Na3PO4 - Sodium Phosphate
(Show Math Here)
Graphs:
IV. Conclusion:
1. Explain the difference between Mixtures and Compounds using data.
Compare the pie charts.
2. Explain how you separated the Salt from the Sand. Use as much new
vocabulary as you can.
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QUIZ: Phase Changes 2017
Calculate Heat Energy:
Apply the following Equations:
Heat = Mass * Heat of Fusion
Heat = Mass * Change in Temperature * SH
Heat = Mass * Heat of Vaporization
Data Table:
Metal Mass Heat Melting Boili Heat of Specif Heat
of Pt. (C) ng Vaporizati ic Energ
Fusio Pt. on Heat y
n (C) (cal/g) (cal/gC (cal)
(cal/g) )
Water 0 100 540
Silver 37 g 80 961 2212 2356 1
37 g 26 0.057
Directions: Determine the Heat Energy required to completely evaporate
the substances in the data table.
*SHOW ALL MATH STEPS
Math Steps (____ out of 4)
A. Water
Heat= m * Hfustion
Heat= 37g * 80 cal/g
Heat= 2960 Calories
It is now a Liquid
+
MP to BP
Heat= m * Change in Temperature * SH
Heat= 37g * 100C * 1 Cal/gC
Heat= 3700 Calories
+
Heat=m * Hvaporization
Heat=37g * 540 cal/g
Heat= 19980 Calories
Total= 26640 Calories
Scientific Notation:
B. Silver
Heat= m * Hf ustion
Heat=37g * 26 cal/g
Heat=962 Calories
MP to BP
Heat=m * Change in Temperature * SH
Heat=37g * 1251C * 0.057 cal/gC
Heat= 2638.359 Calories
Heat=m * Hvaporization
Heat=37g * 2356 cal/g
Heat= 87172 Calories
Total= 90772.359 Calories
Scientific Notation:
Graph your Results:
Writing (_____ out of 4)
Questions:
How are Heat and Temperature different for the following pictures of
boiling water? Explain: (Hint: Use the Heat equation) Heat is the total
energy of molecular motion in a substance while temperature is a
measure of the average energy of molecular motion in a substance.
2. How can you use the unit (cal/gC) to explain the difference between
Water and Silver?
Calories describes how much energy your body could get from eating
or drinking So you know if it is water or food. And gC is how heavy
something is and what type of material it is.
3. Would it be possible for there to be solid oxygen on another
planet? Explain:
Oxygen Melting Point: -218 C = -35
Oxygen Boiling Point: -183 C = -35
No because the melting point could not Exist on another planet besides
earth.
-------------------------------------------------
Metric Measurement
Research the history of the Metric System.
What are the Base Units for Length, Mass, Volume and Temperature?
Why is the Metric System easier to use?
Measure the Length and Width of your desk in m, cm, and mm. Construct a
Data Table to record the information.
What is the area of your desk in square cm? Include in the data table.
Measure the height of 3 classmates in meters. Record on a data table.
What is the area of a cabinet door in square cm?
How many km is it from NY to LA? How many meters?
How many km from the Earth to the Sun? How many meters?
What is the length of 3 objects of your choice in the classroom?
How many meters long was the Titanic? How many kilometers?
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Scientific Method
Directions: Read the following description of an experiment and complete
the components of the scientific method.
Experiment:
Option #1: Patrick believed that fish would become smarter and complete a
maze faster if they ate food that was placed in a microwave first. He had
100 fish that he could use for the experiment. He evaluated their
intelligence based on their time to complete the maze.
Option #2: Mr. Smithers believed that Caffeine may make people more
alert. Mr. Smithers tested 100 people by using their scores in the same
video game. Devin had 3 different brands of drinks with 10 g, 20 g, and 30 g
of caffeine respectively. He measured their scores on a video game that
had a range of 0-1000 points. Some of the players were not given caffeine
drinks. on the game
*Help Mr. Smithers design an effective experiment and write a conclusion
that analyzes your results.
Problem Statement
If Patrick believes that if the fishes eat microwaved fish food them they
will pass the maze faster swim faster.
Hypothesis
The fish will swim faster if they eat microwaved foods, Then they will pass
the maze faster.
Independent Variable
The cooked food that were microwaves
Dependent Variable
The time they swim
Constants (Pick 2)
The time that the finish the maze
The fish
Control
The maze that the fish have to complete
Basic Procedures:
(List 5-8 steps)
1. Purpose
2.Hypothesis
3.Variable
4.Data
5.Improvement
6.Conclusion
Data Table: (Place data table here)
The food the fish did not eat that was not cooked food
Fish that ate cooked food
Time of the maze
8- 4 mins
2-5 mins
Hypothesis: The fish that did not eat cooked food will finish the maze the
fastest
Graph: (Place graph here)
Conclusion:
Purpose, Hypothesis, Description, Data or evidence, Improvements,
Conclusion
The purpose of this is to see if cooked food will help fish swim faster or not
cooked food. My hypothesis is that the fish that did not eat cooked food
will be the faster one to finish the maze.The fish that did not eat cooked
food finished faster than the fish that did eat cooked food. In the data it
shows the fish that did and did not eat cooked food is 8 ½, Also the time
they passed the maze was 2 mins
--------------------------------------------------------------------------------
What is your name? *
Your answer
What is your science class? *
2
3
4
7
1. A scientist conducted an experiment to determine how the amount of
salt in a body of water affects the number of plants that can live in the
water. In this experiment the dependent variable is _____________. *
the amount of salt in the water
the temperature of the water
the number of plants in the water
the water
2. A scientist hypothesizes that the temperature at which an alligator's egg
is incubated will determine whether the alligator will be male or female. The
independent variable is ____________. *
the gender of the alligator
the incubator
the temperature
the male alligators
3. In an experiment, the factor that we measure and is on the Y-axis is
called the ____________. *
independent variable
dependent variable
conclusion
constant
4. In an experiment, the one variable that is changed by the experimenter is
called the _____________. *
independent variable
dependent variable
experimental variable
constant
5. If you were measuring the mass of a fly, you should use ____________. *
meters
grams
kilograms
liters
6. If you wanted to know the volume of water in a small can of soda, you
would use ______________. *
milliliters
pounds
Liters
kilograms
7. A scientist who wants to study the affects of fertilizer on plants sets up
an experiment. Plant A gets no fertilizer, Plant B gets 5 mg. of fertilizer
each day, and Plant C gets 10mg. of fertilizer each day. Which plant is the
control? *
Plant A
Plant B
Plant C
None
8. Victoria grows the same bacteria in 20 petri dishes. She places 10 of the
dishes in a container with a normal atmosphere. The remaining dishes she
places in a container in which the oxygen level is double the normal level.
She labels the first group "A" and the second group "B". Which of the
following best describes the groups? *
Group A is the control group; Group B is the experimental group
Group A is the experimental group; Group B is the control group
Group A is the hypothesis; Group B is the theory
Group A is the control group; Group B is the observation
Group A is the theoretical group; Group B is the hypothetical group
9. Homer notices that his shower is covered in a strange green slime.
Homer decides to spray half of the shower with coconut juice thinking this
will kill the slime. He sprays the other half of the shower with water. After 3
days of "treatment" the green slime on the coconut juice side of the shower
dies. The dependent variable in his experiment is _____________. *
coconut juice
there is no dependent variable
the amount of the green slime
water
10. For an experiment, a scientist put lime at the base of tomato plant A
and baking soda at the base of tomato plant B. She then sealed the plants
in plastic bags. Tomato plant A eventually died, and tomato plant B stayed
healthy. What is the Independent Variable in this experiment? *
the types of plant grown for the test
the response of the plants to each substance
the substance at the base of each plant
the plastic bags wrapped around each plant
11. I am trying to clean my bathroom because it has mold on the bottom. I
was told to use oxy clean to get it up. I use oxy clean on half of the
bathroom and water on the other half. The control is: *
water
oxy clean
bathroom
time
12. A scientist plants two rows of corn for experimentation. She puts
fertilizer on row 1 but does not put fertilizer on row 2. Both rows receive the
same amount of water and light intensity. She checks the growth of the
corn over the course of 5 months. What is a constant in this experiment. *
Amount of water
Corn without fertilizer
Corn with fertilizer
Plant height
13. A student wants to conduct an experiment to find out how pulse rates
changes as the length of time spent exercising increases. The dependent
variable will be _____. *
breathing rate
pulse rate
time spent exercising
the kind of exercise
14. A student hypothesized that the amount of sunlight a sunflower plant
receives determines the number of sunflower seeds the plant produces. In
her experiment, the number of seeds produced is the _____. *
dependent variable
independent variable
constant
control
15. In a controlled experiment, the independent variable is ____. *
the results of the experiment - it goes on the y-axis
the variable that stays the same
changed to test the hypothesis - it goes on the x-axis
always time
16. Sarah wanted to find out if temperature has an effect on the growth of
bread mold. She grew the mold in nine Petri dishes containing the same
amount and type of nutrients. Three were kept at 0 C, three were kept at 90
C, and three were kept at room temperature, 27 C. The containers were
examined and the growth of the bread mold was recorded each Friday for
five weeks. Which of the following is her hypothesis? *
If there are different types of nutrients used, then that will cause
differences in the amount of bread mold.
If the amount of nutrients is changed, then the amount of bread mold will
change.
If the temperature changes then the amount of bread mold will change.
If the number of containers change, then the amount of bread mold will
change.
17. Sarah wanted to find out if temperature has an effect on the growth of
bread mold. She grew the mold in nine Petri dishes containing the same
amount and type of nutrients. Three were kept at 0 C, three were kept at 90
C, and three were kept at room temperature, 27 C. The containers were
examined and the growth of the bread mold was recorded each Friday for
five weeks. The independent variable is: *
growth of bread mold
temperature of the containers
number of containers at each temperature
amount of nutrients in each container
18. What is the independent variable in the experiment found in the link
below? *
Link:
https://docs.google.com/document/d/1_AWFgHyfLv4wgeSgxpngGaZuwg
bJmSkrDreKB8UB2GE/edit
the intensity or brightness of the light
color of the light
the amount of water received weekly
the temperature of the room
19. In the experiment found on the link, all of the following variables must
be held constant EXCEPT *
Link:
https://docs.google.com/document/d/1_AWFgHyfLv4wgeSgxpngGaZuwg
bJmSkrDreKB8UB2GE/edit
the intensity or brightness of the light
amount of time given light
the temperature of the room
color of the light
20. An unknown substance from planet X has a density of 10 g/mL. It
occupies a volume of 80 mL. What is the mass of this unknown substance?
*
0.8 g
21.0 g
523 g
800 g
21. A graduated cylinder has 22 mL of water placed in it. An irregularly
shaped rock is then placed in the graduated cylinder and the volume of the
rock and water in the graduated cylinder now reads 30 mL . The mass of
the rock is 24 g. What is the density of the rock? *
72 g/cm3
5 g/cm3
12 g/cm3
3 g/cm3
22. A rectangular solid of unknown density is 5 cm long, 2 cm high, and 4
cm wide. The mass of this solid is 300 grams. Given this information for
this homogeneous material, calculate the density. *
12,000 g/cm3
7.5 g/cm3
57 g/cm3
120 g/cm3
23. Silver has a density of 10.5 g/cm3 and gold has a density of 19.3 g/cm3
. Which would have a greater mass, 5 cm3 of silver or 5 cm3 of gold? *
Gold
Silver
Aluminum
Same mass
24. A 28.5 g of iron is added to a graduated cylinder containing 45.5 mL of
water. The water level rises to the 49.1 mark. Calculate the density. *
7.92 g/cm3
15.6 g/cm3
325 g/cm3
100 g/cm3
25. 43.2 m = __________ mm *
4.32
0.432
43,200
0.0432
26. 8700 mL = ________ L *
870.0
8.7
0.087
87,000
27. 5.9 km = _____________ m *
0.059
59
5,900
59,000
28. 756.0 cg = _____________ g *
7.56
75,000
756
0.0756
29. 23,000 mm = _____________ m *
2.3
23.0
230
2300
30. Metric Unit for Mass *
LITERS
METERS
GRAMS
SECONDS
31. Metric Unit for Density of a Solid *
g/cm
g/mL
g/cm3
cm/g
32. Metric Unit for Density of a Liquid *
mL/g
cm3/g
g/cm3
g/mL
33. Which appliance is used twice as many hours on the weekends as it is
on weekdays? *
Link:
https://docs.google.com/document/d/1EB6i09-fsWPq_atYYmGxrckDLhmK
38HZsK3geN37f4E/edit
Lights
TV
Computer
Fridge
34.On average, how many hours is the computer used on a weekday? *
Link:
https://docs.google.com/document/d/1EB6i09-fsWPq_atYYmGxrckDLhmK
38HZsK3geN37f4E/edit
1
2
5
8
35. Which 2 objects are the same substance? *
Link:
https://docs.google.com/spreadsheets/d/113l--gKxPIiLDY4pJEvlhIPo2ncc
ec-uOATRhM6lHd8/edit#gid=0
1 and 2
2 and 3
1 and 4
1 and 3
36. What would the mass of the gold in B if the volume is 50% of A? *
Link:
https://docs.google.com/document/d/1TJr89sX26IaO-dG2m7J8nZjJ2yWJ
t0ZV2y7Nq6DAgvI/edit
250 g
1000 g
2000 g
500 g
37. Why does the Oceanic Plate sink below the Continental Plate in the
picture? *
Link:
https://docs.google.com/document/d/1PS0jZRQQxaUzroLvOGOrzLGE010
TXG9Z4wne9zW9KkI/edit
The Continental Plate is made of Basalt and is MORE DENSE than the
Oceanic Plate.
The Oceanic Plate made of Basalt is MORE DENSE than the Continental
Plate made of Granite.
The Continental Plate is EQUAL in Density to the Oceanic Plate.
None
38. Why are mountains such as the Himalayans formed? Study the picture.
*
Link:
https://docs.google.com/document/d/1u9JkVaBZVdnN3Rip1vsxrsljUVkPa
bfQnDttwOvNW2M/edit
Continental and Oceanic Plate have the SAME densities
Continental Plates are MORE dense than Oceanic Plates