EASY
4th CBSE
IMPORTANT
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This simple machine is used to lift heavy objects, open cans and cut objects.

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Important Questions on Force, Work and Energy

EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q A
Wind energy can be used to
EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q A
Which of the following is stored in fuels?    
EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q B
Choose from the following:
(Shine, Friction, Speed)
_____ is greater on a rough surface than on a smooth surface.
EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q B

Choose from the following:
(Lever, Screw, Inclined plane)
_____ is used in a jar lid to hold it in place.

EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q B
Choose from the following:
(Lever, Pulley, Screw)
_____ is used in cranes to lift heavy objects.
EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q B
Choose the answer from the words given in the brackets to fill the blank.
Sun, wind and water are the _____ of energy. (renewable sources / non-renewable sources).
EASY
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q B
_____ (Hydel / Geothermal) is the energy that we get from the hot interior of the earth.
MEDIUM
4th CBSE
IMPORTANT
Revised Longman Active Science.>Chapter 14 - Force, Work and Energy>Assessment Zone>Q C

Match the following:    

Column A Column B
1. Friction a. pulls objects towards the centre of the earth
2. Gravity b. is used to move things up and down
3. Inclined plane c. is a simple machine used in scissors
4. Lever d. generates electricity from flowing water
5. Dam e. acts against moving objects