Science Quarter 3 – Module 2 Uses of Sound, Light, Heat and Electricity 3
Science – Grade 3 Alternative Delivery Mode Quarter 3 – Module 2: Uses of Sound, Light, Heat, and Electricity First Edition, 2020 Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio Printed in the Philippines by ________________________ Department of Education – Region XI Office Address: F. Torres St., Davao City Telefax: (082) 291-1665; (082) 221-6147 E-mail Address: [email protected] * [email protected] Development Team of the Module Writers: Marites A. Gamatero, Rowena P. Montaño,Prolyn Vira I. Ygloria Reviewer: Ryan C. Sapao Illustrator: Prolyn Vira I. Ygloria, Ravenscar C. Ygloria Layout Artist: Prolyn Vira I. Ygloria, Neil Edward D. Diaz Management Team: Evelyn R. Fetalvero Eufemia T. Gamutin Janette G. Veloso Josie T. Bolofer Analiza C. Almazan Arlyn B. Lim Ma. Cielo D. Estrada Secinia C. Morales Maria Liza I. Berandoy
3 Science Quarter 3 – Module 2: Describe the different uses of Sound, Light, Heat and Electricity
ii Introductory Message This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson. Each SLM is composed of different parts. Each part shall guide you step-by-step as you discover and understand the lesson prepared for you. Pre-tests are provided to measure your prior knowledge on lessons in each SLM. This will tell you if you need to proceed on completing this module or if you need to ask your facilitator or your teacher’s assistance for better understanding of the lesson. At the end of each module, you need to answer the post-test to selfcheck your learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these. In addition to the material in the main text, Notes to the Teacher are also provided to our facilitators and parents for strategies and reminders on how they can best help you on your home-based learning. Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task. If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator. Thank you.
1 This module will help you understand about the uses of light, sound, heat and electricity. Take advantage of this material by taking time to read and answer some activities in order to gain more knowledge. Please take good care of this module so that other learners like you can use it in the next few years. What I Need to Know The module is divided into four lessons namely: •Lesson 1 ……………Uses of Sound •Lesson 2 ……………Uses of Light •Lesson 3 ……………Uses of Heat •Lesson 4 ……………Uses of Electricity After going through this module, you are expected to: Describe the different uses of sound, light, heat and electricity in everyday life (S3FE-III-ij-3). 1. It is produced when things vibrate. 2. It helps us hear the sound around us. 3. A noisy vehicle that carries patients from hospital to hospital. 4. People use this to listen to music and current news. 5. Noisy thing that wakes people up in the morning. A. ambulance B. alarm clock C. radio D. sound E. fire truck F. ears Match column A and column B by drawing a line. What I Know
2 Sound is a form of energy. It is produced when things move back and forth or vibrate. It travels from the source through the air. It is used in many different ways in peoples’ daily lives. What’s In Check the small box outside the big box if the object produces sound. Put an X if the object does not produce sound. What’s New Classify whether the following objects use sound for communication, for entertainment, or for warning. Draw a line from the uses of sound to the objects listed below. Lesson 1 Uses of Sound communication warning entertainment firetruck cellphone ice cream bell ambulance radio
3 What Is It What’s More What I Have Learned Study the following pictures. Encircle the pictures that uses sound. Sound can be heard anywhere around us. It is important for it is the main form of communication. Sound is used for communication, entertainment, measuring depth and notification method. Sound is a very important element of nature. It is produced when things around us vibrate. One recognizes sound by hearing it using the ears. Sound may sound very simple but it is very important in our daily lives because it is our main medium of communication. People easily understand one another when they hear each other speak. Same thing happens to other forms of animals when they communicate. Sound is used for entertainment like sound effects for movies and song. It is also used for warnings and notification methods like telephone ring and alarm clock. Above all, sound is used for language and communication like listening to verbal instruction.
4 What I Can Do 1 3 2 4 5 Down: 1. used to be able to hear music from components 2. noisy car that transports patients from the hospitals 3. we have this to be able to speak 1. 2. 3. 4. 5. 3. we have this to be able to speak Across: 4. people use this to listen to news 5. the main form of communication Circle the letter of the correct 1answer. . The main form of communication among people and animals. A. voice B. sound C. radio 2. We can hear the sound around us by using our _____________. A. eyes B. nose C. ears 3. It is a thing which produces sound and moving pictures that we usually use at home for entertainment. A. television B. radio C. glass 4. Sound is produced when things around us ______________. A. breaks B. vibrates C. cries 5. A very loud type of vehicle that helps in putting out fire. A. ambulance B. taxi C. fire truck Assessment Answer the crossword puzzle below.
5 What I Know Write about how people use these light sources. Write your answer on the blank below each picture. dry clothes cooks food light dark places gives light at night time brightens a room 3 5 1 2 4
6 Light is an energy that can be seen and used to see the matter around us. Light is needed in order to see these things.Light from the source falls on these things and then is reflected to our eyes. It can be manmade or natural. What’s In Lesson 2 Uses of Light Check the small box within the big box if the object uses light. Put an X if the object does not use light.
7 What’s New What Is It What do you know about light? Draw an object that uses light in each box. light Uses of Light Light energy is the only visible form of energy. Light is needed in order to see things. There are as many uses of light in our daily life. 1. It helps us to see things. You see the world around you; light helps you play and work. 2. It helps plants to make food and grow using the light of the sun. 3. It is used in many electronic appliances. You can watch television programs and movies, and play video games. 4. Traffic lights help to control the flow of traffic on the roads. 5. You can read newspapers and books 6. Colorful lights are used to decorate or beautify places. 7. Laser light is used in the presentation as pointer. 8. Flashlights are used to light dark places.
8 What’s More What I Have Learned L A S D F G F H J L G A J K L H L S T N G D M I O R A D C G D Z X P S L S U N J T R U C K B H S N T E R E T V Y L A S T L I G H T N I N G Z D G H E J A G T A N A B U L B U H K L S C V T N S E T I E N Find the objects that use light in the puzzle and circle them. Light is a form of energy that makes it possible for us to see the world around us. Light is very important in our daily life. Light is needed in order for us to live.
9 What I Can Do Assessment Write O in the space provided if the statement is True and write X if the statement is false. ______1. Flash lights are used to light the room. ______2. Light helps plant to make food and grow. ______3. Light is used in many electronic appliances. ______4. Light is the form of energy that comes from the moon. ______5. Fire can be used as light during camping aside from cooking. With the given concepts in the box, complete the concept map below. learn entertain read books light watch TV
10 What I Know Encircle the objects that uses heat and mark X if it does not.
11 Heat is a form of energy. It is the result of the continuous motion of small particles that compose all matter. When a material is heated, these tiny particles called molecules vibrate faster. If the molecules absorb more heat energy, they will vibrate even faster. As a result, the temperature will rise. What’s In Lesson 3 Uses of Heat H Y C H M R C O M L O V E N D M K B S H T S E W F D B T F X L E V E R U K T H J I I V D E X F S S A T P E W F I R E P L A C E U T T J T Q K S G H T W R Q D O N V O C J L O M E N G T S U N K V S D V D H E W E F B D C P O Y D E M Q E E R R T Y C F L A T I R O N I R G I N E Z E W A S V E X Y K M Y A T Q B X Below are the names of the things that uses heat. There pictures are shown below. Find them in the word puzzle and encircle them.
12 Notes to the Teacher Instruct the learners about the safety measures when dealing with fire to avoid burning accidents. Also, instruct the learners what to do in case somebody gets minor burns. What’s New Direction: Fill in the blank with the correct answer. 1.We need light to be able to _______ when it is dark. (see, hear) 2.We need the sun’s heat to ____ our clothes after washing. (display, dry) 3.We need heat from stoves to ______ our food. (taste, cook) 4.We need hot water from the kettle to __________ coffee. (drink, eat) 5.We need firewood to keep us ____________ during cold nights. (safe, warm)
13 What Is It Heat is a form of energy. It is very important in our daily lives. We need heat energy in many different ways: to cook our food, to dry our clothes, to boil water.In factories, heat is used to process food, iron, glass, and many other products. Heat also plays an important role in nature and the environment. For instance, the occurrence of seasons, rain and wind are the results of heat energy changes in nature. Some animals depend on the heat from the sun to keep their body warm. These animals bask themselves in the sun to warm themselves. This heat enables their body to function normally. Plants need heat from the sun to live and grow. Seeds only start to grow when there is warmth from the sun. So, people, plants and animals need heat to survive.
14 What’s More What I Have Learned 1. 5. 3. 4. 2. Answer the crossword puzzle below. Down: 1.Use to keep us warm during cold days 2.Use for warming left over foods 3.Use for drying fish Across: 4.Use to press our school uniforms 5.Mothers use to be able to cook delicious food People use heat in many ways. At home, it is used for cooking food, drying clothes, and keeping body warm. In industries, heat is used to melt, cut and shaped plastic and metal. It is also used to dry paint and cement for construction. Heat also plays an important role in nature and environment. For instance, the occurrence of seasons, rain and wind are the result of heat energy changes in nature. Plants and animals also need heat to survive. Plants make their own food with the help of the heat of the sun. The sun is our most important source of heat. The sun’s heat is absorbed by the seas, the ground, the plants, and the atmosphere.
15 What I Can DO Assessment Item Observed Does it Use Heat? 1. 2. 3. 4. 5. Direction: Study the table below. Answer with YES or No. Put a in the box if the statement is true and put an X if it is not. 1. People, plants and animals need heat in order to survive. 2. Our home appliances use heat in order to work. 3. You can feel heat but you cannot see it. 4. We use heat to cook food. 5. Heat is a form of energy. It is very important in our daily lives.
16 What I Know _______1. Usage of electricity is almost found everywhere. _______2. Objects that need electricity to work are called electrical devices. _______3. We can use our bicycle without using electricity. _______4. Electricity makes our life easier. _______5. Sheena expose her mobile phone battery under the sun in order to have electricity. ________6.In order to lit the candle,Alet plug in the candle in the electrical socket. Draw a star if the statement is true. Draw a sun if the statement is false.
17 Electricity is a form of energy. Devices move or change in response to the electricity flowing through them. Many of the inventions of technology make use of electricity. Modern life has become very dependent on electricity. This lesson will focus only on the uses of electricity found in our home/place. What’s In Lesson 4 Uses of Electricity Direction: Color the objects red if it uses an electricity. Color it green if it does not.
18 What’s New Notes to the Teacher The lesson that will be tackled will focus on the sources of electricity found in the learners’ home. Generators, windmills, power plants, solar and other sources of electricity can be oriented since these will be discussed in the higher grade level. Focus on the battery and electrical sockets, its uses and safety handling. Because these are the basic things children should understand inside their house. Direction: Read and understand the Poem. Answer the questions below. Electricity is life that is what others say, Without electricity life is a dismay. All the things we know, All the things we see All the things we see, only becomes meaningful When powered by electricity. Refrigerators are cool, it keeps our food fresh. Watching late T.V. shows, to ease the whole day stress. Gadgets, cellphones and light Finds its meaning with electricity, right? So, conserve electricity, that’s what you should do. Because electricity is doing everything for you. 1.What makes our home appliances work? _______________________________________________________________ 2. What does electricity do for you? _______________________________________________________________ 3.How are we going to conserve electricity? ______________________________________________________________
19 What is It What’s More Electricity is a form of energy like light, sound and heat. Devices move or change to response to the electricity flowing through them. Many of the inventions of technology make use of electricity. Modern life has become very dependent on electricity. Without electricity most of the things that we use every day would not simply work. Electricity has changed the daily life of everyone. Most of the appliances in the homes are powered by electricity. Electricity makes the bulb light up, the washing machine work, and many appliances do their work. It brings news, music, and shows into our homes through radio and television. It also lights the streets and makes big machines in factories do their work. Direction: Study the pictures. Find the things that use electricity. Connect them to the word ELECTRICITY at the center by drawing a line. Electricity
20 What I Have Learned Electricity has many uses. Electricity is used to produce light, heat, motion and sound. Objects that need electricity to work are called electrical devices or equipment. Computers, music players, television sets and cellphones need electricity to work to provide us with entertainment. Electricity is also used in electric fans and air- conditioners to keep us cool. Electricity is very important in the home and in all places to help people in doing daily life activities. Direction: Look at the pictures below. Write down the objects that uses electricity. Things that uses electricity: 1. 4. 2. 5. 3. 4. 5. Hair blower electric fan fan Bicycle beachball remote control Oven sunglasses television Flower vase rice cooker pitcher
21 What I Can Do Assessment Electricity is used in an electric stove to ___________ food. Electricity is used in an electric kettle to ____________ water. Electricity is used in a toy car to make it ____________. Electricity is used in a television to give us _________________. Electricity is used in radio to make __________. Direction: The pictures show some objects that uses electricity. Use the words in the box to complete the sentences. cook move sound entertainment boil Direction: List down the five (5) things found in your home that uses electricity. Write your answer in the web. Electricity
22 Additional Activities Direction: Read and encircle the letter of the correct answer. 1.Maria wants to watch her favorite TV show. What will she do? A. She will put a battery inside the television. B. She will plug in the power cord to the electrical socket. C. She will touch the TV screen. 2. Benjie received a remote-control car as a birthday present from his uncle Tom. How will he use the toy car? A. He will put a battery inside the battery compartment. B. He will push the car in order to move. C. He will pull the car using a string so that it will move. 3. While I’m making a call to my sister my mobile phone went empty. What am I going to do so that I can continue to call my sister? A. I will expose the phone under the heat of the sun. B. I will keep the phone inside the box. C. I will charge the phone using the charger into the electrical outlet. 4. All the appliances in our home uses battery in order to work. A. yes B. No C. Maybe 5. Electricity makes our life easier by making appliances and machines automated. A. Agree B. Disagree C. both A and B
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27 References Cristina S. Baylon, The Amazing World of Science 3, Salesiana Books by Don Bosco Press Inc., Copyright 2013, ISBN:978-971- 31-2 Carolina Sugpatan-Violeta, Ethel Grace A. Ramos, Nenita A. Apolinario, Gil Nonato C. Santos, Ph.D, The New Science Links 3, Rex Bookstore Inc., Copyright 2015, Revised Edition 2015, ISBN: 978-972-23-6878-1 Arthur DC. Sacatropes, Luz E. Osmeña, Michelle H. Guadamor, Aiisa C. Corpuz, Jennifer N. Rojo, Jennifer A. Tinaja, Job S. Zape Jr., Leni Solutan, John Fitzjerald Secondez and Nelolita S. Sarabia – Science 3- K-12 Book. Pasig City: Department of Education, First Edition 2015, ISBN: 978-621—407-004-5/6, 2-17.
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