CBSE Class 6 Science Work Energy Worksheet Set 01

Work - Energy

When is work said to be done?

What are the units in which work is measured?

Define the terms—

i) Potential energy__________________________________

ii) Kinetic energy______________________________

State the principle of conservation of energy and give an example.

Explain renewable and non-renewable sources of energy. Write one example each.

What is the work done when a boy lifts a sack of flour of mass 25kg from a height of 15 m to a height of 30m.

1. In which of the following cases work is done?

i) A boy kicking a stone along the ground.___________________

ii) A boy pushes a boulder with a lot of force but the boulder does not move____________________

iii) Food is pushed from the mouth into the stomach__________________________

iv) A stone is raised by 2m and then lowered by 1m_________________________

v) Raju puts on the television and later switches it off._________________________

2. Which of the following have potential energy/kinetic energy/both/neither

i) A stationary ball on the ground_________________________

ii) A ball thrown up in the air________________________

iii) A vibrating spring__________________________

iv) A rocket shooting off into outer space____________________________

v) A stationary man on the top of a hill___________________________

3. What energy transformation takes place in each of the following

i) A solar cell_________________________________

ii) Loudspeaker______________________________

iii) Electric iron_______________________________

iv) Steam engine_____________________________

v) Rocket___________________________________

vi) Telephone receiver_________________________

4. Classify the following sources of energy as renewable / non-renewable

i) Kerosene_______________________________

ii) Diesel_________________________________

iii) Wind_________________________________

iv) Tides_________________________________

v) Sun___________________________________

vi) Firewood_______________________________

vii) Coal__________________________________

viii) Water_________________________________

1. State the types of energies associated with the following –

i) A rotating fan__________________________

ii) Sun______________________

iii) Children playing football____________________

iv) Electric cell________________________

v) A flying kite___________________

vi) Television______________________

vii) Glowing light bulb__________________

viii) Fire_________________________

2. What are the different sources of energy? Write names.

3. Write briefly about—

Renewable sources of energy________________________

Non renewable sources of energy______________________

1. Write the statement for principle of conservation of energy.

2. How much work is done when a train is driven by a force of 500N through a distance of 400m?

3. How much work is done when a body of mass 350kg is raised to a height of 200m?

1. Define the following terms – Work and Energy.

2. Write the various forms of energy.

3. What is mechanical energy? What are the two types of mechanical energy.

4. Write the factors influencing kinetic energy and potential energy.