Unit 1: My Body
I. Pick out the odd one.
1. Heart, legs, brain, kidney
Ans: legs
2. Eyes, ears, fingers, lungs
Ans: lungs
3. Fore brain, mid brain, hind brain, nerves
Ans: nerves
II. Complete the figure with words given in the bracket.
Good Touch:
Grand parents’ love
Pat of dad on head
Parent’s hug and kisses
Bad Touch:
Kissing on the mouth
Hitting the buttocks
Showing awkward pictures
III. Find the answers from the following clues and circle the words. (First one is done for you)
1. An internal organ. Heart
2.Organ that helps us to breathe. Lungs
3. An organ removing wastes from our body. Kidney
4.Unfair and unhealthy touch. Bad touch
5. Everyday we should drink more water.
IV. Say true or false.
1. Head, hand and legs are internal organs. False
2. Heart is made up of muscles. True
3. Muscles are the soft parts that covers our bones. True
4. Brush your teeth once a day. False
5. Father patting you on your head is a good touch. True
V. Choose the correct answer.
1. _________ is the commanding centre of our body.
Heart b) Lungs c) Kidney d) Brain
Ans: d) brain
2. Food is converted to energy in the ________.
Neck b) heart c) stomach d) nose
Ans: c) stomach
3. Every day we should brush our teeth ________ times.
One b) two c) three d) four
Ans: b) two
4. Good touch is a fair and _______ touch.
Unhealthy b) bad c) unsafe d) healthy
Ans: d) healthy
5. Drink a lot of _________ every day.
Oil b) water c) packed juice d) salt water
Ans: b) water
VI. Answer the following questions in one or two sentences.
1. Name the internal organs.
Brain
Lungs
Heart
Kidney
Liver
2. What are the functions of brain?
Brain is a commanding centre in our body.
Help us to think and perform various actions
3. List out the food items for healthy mouth and teeth.
Take plenty of fruits, vegetables and dairy products.
Drink water or milk instead of sugary juices.
4.How will you take care of your heart and kidney?
For healthy heart we should avoid fatty food items.
For healthy kidneys we need to drink a lot of water.
5.What do you do when some one touches you and you feel uncomfortable?
I will say “don’t touch” in a loud voice.
VII. Think and answer.
1. When an unknown person disturbs you, how do you behave? Write in your own words.
When an unknown person disturbs me i will say “don’t touch” in a loud voice and tell to other people near me about this.
2. Which organ controls thinking, speaking and learning. Write its three important parts.
Brain controls thinking, speaking and learning. Brain has three main parts
Fore brain
Mid brain and
Hind brain
Unit 2: Matter and Materials
I. Find the odd one.
1. Brick, coir, silk cloth, pine apple
Ans: pine apple
2. Stone, rubber band, cycle tube, electric wire
Ans: Stone
3. Sun, candle, torch, pen
Ans: pen
4. Umbrella, sponge, rain coat, jerkin
Ans: sponge
5. Glass bottle, exam pad, paper plate, wooden board
Ans: glass bottle
II. Fill in the blanks.
1. Materials which can be compressed or cut easily are called soft materials.
2. Gold and diamond are the examples of shiny materials
3. Materials which can be bent or stretched easily are called flexible materials.
4. Transparent objects allow all the light to pass through them.
5. Sun is the natural source that stimulates sight and makes things visible.
III. Match the following.
1. Light source - glass
2. Waterproof - vegetable oil
3. Transparent - sun
4. Translucent - metal
5. Opaque - rain coat
Ans:
1.Light source - sun
2. Waterproof - rain coat
3. Transparent - glass
4. Translucent - vegetable oil
5. Opaque - metal
IV. Say True or False.
1. We cannot compress, cut or bend the rough materials easily. True
2. Dull materials reflect light. False
3. Sand paper is a good example for smooth materials. False
4. Opaque objects do not allow light to pass through them. True
5. Mirrors change the direction of light that fall on them. True
V. Answer the following.
1. When can you say a material is waterproof material?
If the material did not allow water to pass through them, then we can say that the material is waterproof material.
2. What is a light source?
The objects that give off light are called light sources.
3. What is the difference between transparent and opaque materials?
4. Define reflection.
The bouncing of light by any smooth or polished surface is called reflection.
5. Classify the objects given below as transparent, translucent or opaque materials.
(Air, Rock, Water, Aluminium foil, Mirror, Snow, Wooden board, Polythene bag, CD, Oil soaked paper, Glass tumbler and Coloured glass)
Unit 3: Work and Energy
I. Use the correct word to fill the blanks.
(Ramp, Simple machines, Work, Energy, Pulley)
1. Work is said to be done when a force is acting on it.
2. The ability to do work is energy.
3. Pulley is a machine made up of wheel and rope.
4. Simple machine help us to make work easier.
5. An example for inclined plane is ramp.
II. Rearrange the letters and find out the names of the tools.
1. EDGEW - WEDGE
2. RLEVE - LEVER
3. EWCRS - SCREW
III. Match.
1. Class II lever - drawing water
2. Pulley - bicycle
3. Class I lever - but cracker
4. Wheel and axle - wind
5. Renewable resource - seesaw
Ans:
1. Class II lever - nut cracker
2. Pulley - drawing water
3. Class I lever - seesaw
4. Wheel and axle - bicycle
5. Renewable resource - wind
IV. Classify the things below.
V. Answer the following.
1. What is the unit of energy?
The SI unit of energy is Joule.
2. Name some simple machines.
Examples of simple machines are pulley, wedge, inclined plane, screw, lever, wheel and axle.
3. What is a first order lever?
When the fulcrum is between the effort and the load, it is known as Class I lever.
Eg: Scissors, pliers and seesaw.
4. Lemon juicer belongs to which type of lever? Why?
Lemon juicer belongs to Class II lever, because in lemon juicer the load is between effort and fulcrum.
5. Define work.
An action in which one exerts a force to move an object is known as work.
6. Write any three types of energy.
Mechanical energy
Thermal energy
Light energy
Solar energy
Unit 4: Science in Everyday Life
I. Choose the correct answer.
1. Primary source of energy for the young ones of some animals is
Water b) fruits c) milk
Ans: c) milk
2. Vitamin present in milk that helps us to maintain our bones is
Vitamin-E b) Vitamin-C c) Vitamin-D
Ans: c) Vitamin-D
3. One of the ancient food items made by human is
Noodles b) cake c) bread
Ans: c) bread
4. __________ is a raw food.
Cucumber b) Chappatti c) Bread
Ans: a) cucumber
5. A gadget that plays songs is called
Pen drive b) camera c) music player
Ans: c) music player
II. Fill in the blanks.
1. Cheese and paneer are made from milk.
2. Nutrients are made ready for digestion by cooking.
III. Match the following.
1. Music player - communicates with the world.
2. Smart phone - stores data
3. Electric torch - plays games
4. Pen drive - provides light
5. Tablet - plays music
Ans:
1. Music player - plays music
2. Smart phone - communicates with the world
3. Electric torch - provides light
4. Pen drive - stores data
5. Tablet - plays games
IV. Answer is an sentence or two.
1. Name the food products derived from milk.
Cheese
Paneer
Milk sweets.
2. Write the names of any three baked foods.
Bread
Biscuit
Cake
3. In what ways a smart phone will help you?
Smart phone uses:
Communication
Ability to access internet
Store files
Take photos
Track location.
4. What is food?
Food is one of the basic needs of our life .
Food provides energy.
It is usually made by cooking plants or animals
It contains essential nutrients to keep our body healthy.
V. Answer in detail.
1. Cooking removes harmful microbes. Write down other benefits of cooking.
Cooking is important because it makes food suitable for consumption.
Benefits of cooking:
Cooking makes nutrients ready for digestion.
It helps to make food in the desired texture, flavour and taste.
It destroys harmful microbes.
2. Why should we drink milk?
Milk:
Milk is produced by Mammals for nourishing their young ones. Milk from many animals is used by humans. Cow’s milk is used commonly.
Sources of milk:
Mammals
Soya milk
Nut and seed based milk
Nutritional Value:
It contains water, sugar, protein, fat, vitamins and minerals
Health Benefits of Milk:
It strengthens bones and teeth.
It maintains blood pressure.
It reduces the risk of heart disease.
It is a source of energy.
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