Blue Team Portfolio 2018

Calculations ​(Examples):

IMA OF INCLINED PLANE 1
IMA = Input Distance(Effort)/Output Distance(Height)
IMA = 300m/70m
IMA = 4.29

IMA OF INCLINED PLANE 2
IMA = Input Distance(Effort)/Output Distance(Height)
IMA = 200m/70m
IMA = 2.86

IMA OF INCLINED PLANE 3
IMA = Input Distance(Effort)/Output Distance(Height)
IMA = 100m/70m
IMA = 1.42

AMA OF INCLINED PLANE 1
AMA = Output Force/Input Force(effort)
AMA = 12/4
AMA = 3

AMA OF INCLINED PLANE 2
AMA = Output Force/Input Force(effort)
AMA = 12/6
AMA = 2

AMA OF INCLINED PLANE 3
AMA = Output Force/Input Force(effort)
AMA = 12/8
AMA = 1.5

EFFICIENCY OF INCLINED PLANE 1
Efficiency % = (Work output/Work input) x 100
Efficiency % = (840/1200) x 100
Efficiency % = 70

EFFICIENCY OF INCLINED PLANE 2
Efficiency % = (Work output/Work input) x 100
Efficiency % = (840/1200) x 100
Efficiency % = 70

EFFICIENCY OF INCLINED PLANE 3
Efficiency % = (Work output/Work input) x 100
Efficiency % = (840/800) x 100
Efficiency % = 105

Data Table: ​(Located on Google Classroom)

Output Output Output Input Input Input Efficie

Trial Force (N) Dist. (m) Work (J) Force Dist. Work IMA AMA ncy

Angle = 12 70 840 4 300 1200 4.29 3 70

Angle = 12 70 840 6 200 1200 2.86 2 70

Angle = 12 70 840 8 100 800 1.42 1.5 105

Graph:​ (​ Angle and Mechanical Advantage)

Conclusion:
Option #1 Write a Conclusion.
***Your conclusion must also address which machine would be impossible
and why?

1. Discuss purpose

2. Restate hypothesis - angle and mechanical advantage

3. Data to support hypothesis

4. Is there a machine that is impossible? Explain using research on
the Law of Conservation of Energy (Support with research - Use
Explore Tool research - INLINE CITATIONS )1

5. Use this source to explain the relationship of this machine to
Newton’s First Law of Motion.

The purpose of this lab was to find out how the angle of an Inclined Plane
affects the Mechanical Advantage of the machine. My hypothesis was if
the angle of the Inclined Plane is lowered, ​than​ the IMA and AMA would
increase. This was correct, because the data proves the inclined plane
with the lowest degree (13°​ )​ had the highest Mechanical Advantage, and
the one with the highest degree (44°​ )​ ​ h​ ad the lowest Mechanical
Advantage. In other words, the lower the degree, the easier it is to push
the Output Force up the ramp. One of the machines is impossible to use.
The impossible machine is the 3rd inclined plane, with the angle of 44°​ ​.
Newton's first law of motion is “​An object at rest stays at rest and an
object in motion stays in motion with the same speed and in the same
direction unless acted upon by an unbalanced force.” The relation of the
machine to this law

1 "Introduction to mechanical advantage (video) | Khan Academy."
https://www.khanacademy.org/science/physics/work-and-energy/mechanical-advantage/v/introduction-to-
mechanical-advantage​. Accessed 9 Apr. 2018.

unfinished

TEXTBOOK REVIEW pg. 152-153 (1-28) Study these
Rubric

Lab Rubric - Data Analysis Sections

1 234

Data/ ____Data is poorly ____Data is ____Data is ___Data is clearly
Observations organized or missing represented in a represented in the and accurately
altogether. table or graph, but table or graph with represented in a
No mention of it is incomplete or minor errors. More table or graph.
observations there are major complete discussion Observations
errors. Some of observations. include discussion
discussion of of both qualitative
observations and quantitative
observations.

Conclusion/ ____No conclusion is ____Somewhat ____Adequately ____Clearly explains
Analysis written in this report or it explains whether or explains whether or whether or not the
is very brief. No data is not the hypothesis not the hypothesis hypothesis was
cited. was supported. was supported. supported. Data
____No analysis is ____ Possible Data is cited to was cited to support
included or it is extremely sources of error are support hypothesis. the hypothesis.
brief no sources of error somewhat ____Possible ____Possible
are explained. explained. sources of error are sources of error are
____No discussion of ____ No discussion adequately clearly explained.
patterns or trends in the of patterns or explained.

data trends ____Some ____Trends and

discussion of Patterns in the data

patterns or trend in are clearly

the data discussed.

 

 

Simple Machine Presentation 





 



 
 
 

 
Chemical Reactions 

 

Quiz Review 
 

1. What happens to mass when you burn gasoline in an engine?
A. Mass is lost
B. Mass is gained
C. New substances are created

2. In salt water, the SOLUTE is the ______________.
A. Water
B. Salt
C. Glass

3. What happens to matter when it is heated?
A. Molecules slow down and move closer
B. Molecules slow down and move further
C. Molecules move faster and move further apart

4. When iron and sulfur or rocks and sand are MIXED what
happens to the properties?
A. stay the same
B. change

5. A _______________ is called a solution made up of metals.
A. Sublimation
B. Condensation
C. Alloy

6. When one element displaces another element in a compound,
the reaction is a _______________ reaction.
A. Synthesis
B. Single Displacement
C. Displacement

7. These 2 ways will speed up the dissolving of a solute:
A. Cool down and grind up the solvent
B. Stir and heat the solution
C. Look at it

8. Chemical reaction in which energy is released in the form of
heat is called __________.
A. Endothermic
B. Exothermic
C. Density

9. What happens if you increase the surface area of a solid when
dissolving?
A. Dissolves faster
B. Dissolves slower
C. Same

10. The number that comes before a chemical formula (2 H2​ ​0) is
called the __________
A. Subscript
B. Coefficient
C. Fractions

11. The smallest particles that make up matter (building blocks of
matter) is/are called ________.
A. compound
B. Mixture
C. Atom

12. Iron rusting is an example of _________________.
A. Physical Property
B. Chemical Property

13. Changing directly from a solid to a gas is called
______________.
A. Density
B. Evaporation
C. Sublimation

14. Phase changes (boiling, melting) are called
________________.
A. Physical Changes
B. Chemical Changes

15. What should the coefficient be in the following reaction:

___ Fe + 3 O​2​ → 2 Fe​2O​ 3​
A. 2 B. 3 C. 3 D​ . 4

16. What should the coefficients be in the following reaction:
___Al + ____ HCl → ___AlCl​3​ + ___ H2​
A. 2, 2, 2, 2
B. 4, 2, 2, 4
C. 2, 6, 2, 3

17. What should the coefficients be in the following reaction:
___ KClO​3​ → ___ KCl + ___ O2​
A. 2, 2, 2, 2
B. 2, 2, 3
C. 4, 4, 6

18. A substance that speeds up a chemical reaction is called a
___________.
A. inhibitor
B. coefficient
C. reactant
D. catalyst

19. When rocks, sand and iron are mixed together, the properties
of the final substances are _______________ to those of the
beginning substances.
A. same
B. different

 
Electricity 

Benjamin Franklin

Benjamin Franklin​ w​ as born on January 17, 1706, in
Boston, which was then known as the Massachusetts Bay
Colony.​ He is best known for being a founding father of
the U.S. He also drafted the Declaration of Independence
and Constitution. Besides this, he was very interested in
electricity.

In the 1740’s, people used electricity for simple magic
tricks and electricity wasn’t necessarily helpful yet. ​Being a
curious and inventive thinker, Franklin wanted to know
more than just the popular tricks. He began thinking about
electricity and came up with an important idea.

His idea was about electricity and lightning. Franklin
noticed several similarities between the two. They both
created light, were attracted to metal, had a particular
smell, and more. Based on his observations, Franklin
thought electricity and lightning were the same thing, but
no one had ever tested it.

He came up with a plan to prove that lightning and
electricity are the same thing. Franklin needed something
to get close enough to the clouds to attract the lightning,
and since he couldn't get up there since Philadelphia didn't
have any hills or tall buildings, he flew a kite with a key up
to it up to it.

Although he definitely didn’t invent electricity, he
discovered things about it that were previously not
understood.

Science Portfolio Reflection

1. What was your favorite science activity or topic this year? Why did
you enjoy this activity? Be specific

I enjoyed learning about Electricity and making the electricity
timeline. I enjoyed it because I like to be creative and draw pictures.
For my poster, I wrote the events and got to draw pictures to go
along with it.

2. Which topic or skill did you find to be the most challenging?
Explain

I think the topic that was most challenging for me was the Solubility
topic. Trying to remember the elements and writing chemical
formulas was hard for me to understand.

3. Provide an example of 3 types of graphs that were used this year in
science? Why did it make sense to use these graphs for those
activities?

We used pie graphs for our Classifying Matter topic a lot when
working with mixtures. This made sense because there were a lot of
percentages, and we were able to show what percentages of the
mixture were certain things with the pie graph.
We mostly used bar graphs when working with density, because it
was easy to put each bar as a certain metal, and the height of the
bar would be the density of the metal. With a bar graph, you can
compare which metal was more or less dense than others.
We used line graphs normally when working with time as a variable.
With a line graph, it’s easy to show how something increases or
decreases over time.

4. What were the key tips you remembered about solving math
problems in science this year? Word problems? Provide an example
from this portfolio of a science math problem that was challenging to
solve this year.
I kept in mind the triangle showing that Density = Time x Velocity. (In

our density topic)

A problem that was a bit difficult for me to complete was:
Naturally occurring chlorine that is put in pools is 75.53 percent 35Cl
(mass = 34.969 amu) and 24.47 percent 37Cl (mass = 36.966 amu).
Calculate the average atomic mass of chlorine.
My answer was:
35.45

5. Which lab conclusion or sample of writing are you most proud of in
this portfolio?
I am most proud of the work I did for gravitational potential energy
and kinetic energy.

6. What are you excited to learn about in science next year? Do you
want to pursue a career in the sciences? Explain.
I’m not very interested in pursuing a career in the sciences, because
science isn’t really something I’m good at. I think it is interesting,
but I don’t plan on being a scientist or anything like that.