The Earth attracts all objects towards itself with a force called the

• buoyant force

• gravitational force

• frictional force

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This force makes objects float on a liquid.

• Gravitational force

• Mechanical force

• Buoyant force

The force which attracts iron and nickel is _______

• gravitational force

• frictional force

• magnetic force

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Why does a ball rolling along a plain surface, stop after some time?

• Due to gravitational force

• Due to mechanical force

• Due to frictional force

The force used to lift objects, pull objects or push them.

• Magnetic force

• Muscular force

• Buoyant force

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If a girl is pushing a wall, is work done here?

• No

• Yes

• Maybe little work is done

When work is done, the movement should be opposite to the direction of the applied force. (True or False)

• True

• False

What is energy?

• Energy is the distance moved by a human being.

• Energy is the ability to move objects without force.

• Energy is the ability to do work.

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Name the energy produced due to vibrations.

• solar energy

• sound energy

• wind energy

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Energy obtained due to flow of charged particles-

• Sound Energy

• Electrical Energy

• Geothermal Energy

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