Class 4 Science Revision Question paper

Class IV – Science

Question Paper

Time: 2 Hours
Maximum Marks: 50

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Section A – Multiple Choice Questions (1 × 10 = 10 marks)

1. Most of the accidents occur due to our
   a) cleanliness  b) carelessness  c) awareness

2. Always walk on the
   a) road  b) road-divider  c) footpath

3. Always follow the ______ lights on the road.
   a) sun  b) traffic  c) tube

4. Which of the following contains harmful chemicals that can be poisonous?
   a) insecticides  b) chocolates  c) orange syrup

5. The immediate help given to an injured person is called
   a) first-aid  b) second-aid  c) third-aid

6. ______ slows down the movement.
   a) Energy  b) Friction  c) Atom

7. When a force changes the position of an object, ______ is said to be done.
   a) force  b) work  c) energy

8. Bottle opener is an example of
   a) inclined plane  b) pulley  c) lever

9. Pull and push are examples of
   a) types of force  b) ability to do work  c) stop a moving object

10. Energy from the wind is called
    a) solar energy  b) wind energy  c) heat energy

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Section B – Fill in the Blanks (1 × 8 = 8 marks)

1. ______ can happen when we are not careful.

2. Do not run in the house especially if the floor has just been ______.

3. Do not play with the ______ and ______.

4. Do not run on the ______.

5. Always cross the road at the ______.

6. Force can change the ______ of a moving object.

7. Friction ______ the motion of an object.

8. The wind energy can rotate the blades of a ______.

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Section C – True or False (1 × 8 = 8 marks)

Write T for True and F for False:

1. Safety rules are not required when we are in the playground.

2. We should not play with matchsticks.

3. We should run on the wet floor.

4. We should cross the road at the zebra crossing.

5. Force cannot speed up a moving object.

6. Friction is a force that tries to stop a moving object.

7. The Sun is the centre of the solar system.

8. Jupiter is the smallest planet in our solar system.

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Section D – Match the Columns (1 × 6 = 6 marks)

Set 1

Column A	Column B
1. Force	a) types of force
2. Two	b) ability to do work
3. Friction	c) lever, pulley etc.
4. Simple machines	d) a pull or push
5. Energy	e) stop a moving object

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Set 2

Column A	Column B
1. Equator	a) direction
2. Satellite	b) solar system
3. North Star	c) hemispheres
4. Rotation	d) moon
5. Axis	e) day and night

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Section E – Answer the Following (3 × 6 = 18 marks)

1. Why should we follow safety rules?

2. What safety rules should we follow when we cross a road?

3. What do you mean by gravitational force?

4. Give an example of a lever.

5. Why does the Sun look so big and the other stars look so small?

6. Write the difference between:
   a) Inner planets and outer planets
   b) Rotation and revolution

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Section F – Name the Following (1 × 4 = 4 marks)

1. Planet with life – __________

2. Largest planet – __________

3. Planet closest to the Sun – __________

4. Red planet – __________

Answers:

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Section A – MCQs

1. b) carelessness

2. c) footpath

3. b) traffic

4. a) insecticides

5. a) first-aid

6. b) Friction

7. b) work

8. c) lever

9. a) types of force

10. b) wind energy

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Section B – Fill in the Blanks

1. Accidents can happen when we are not careful.

2. Do not run in the house especially if the floor has just been cleaned.

3. Do not play with the knife and scissors.

4. Do not run on the road.

5. Always cross the road at the zebra crossing.

6. Force can change the speed of a moving object.

7. Friction slows down the motion of an object.

8. The wind energy can rotate the blades of a windmill.

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Section C – True or False

1. Safety rules are not required when we are in the playground. – False

2. We should not play with matchsticks. – True

3. We should run on the wet floor. – False

4. We should cross the road at the zebra crossing. – True

5. Force cannot speed up a moving object. – False

6. Friction is a force that tries to stop a moving object. – True

7. The Sun is the centre of the solar system. – True

8. Jupiter is the smallest planet in our solar system. – False

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Section D – Match the Columns

Set 1

1. Force → d) a pull or push

2. Two → a) types of force

3. Friction → e) stop a moving object

4. Simple machines → c) lever, pulley etc.

5. Energy → b) ability to do work

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Set 2

1. Equator → c) hemispheres

2. Satellite → d) moon

3. North Star → a) direction

4. Rotation → e) day and night

5. Axis → imaginary line on which the Earth rotates

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Section E – Answer the Following

1. Why should we follow safety rules?
   We should follow safety rules to prevent accidents and stay safe.

2. What safety rules should we follow while crossing the road?
   We should cross at the zebra crossing, look both sides, and follow traffic lights.

3. What do you mean by gravitational force?
   Gravitational force is the force by which the Earth pulls objects towards itself.

4. Give an example of a lever.
   A bottle opener is an example of a lever.

5. Why does the Sun look big and other stars look small?
   The Sun looks big because it is closer to the Earth, while other stars are very far away.

6. Difference between:
   a) Inner planets and outer planets

   • Inner planets are close to the Sun.

   • Outer planets are far from the Sun.

   b) Rotation and revolution

   • Rotation is the spinning of Earth on its axis.

   • Revolution is the movement of Earth around the Sun.

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Section F – Name the Following

1. Planet with life – Earth

2. Largest planet – Jupiter

3. Planet closest to the Sun – Mercury

4. Red planet – Mars