Topic 3 Energy

Front

What is energy?

Back

Energy is the ability to do work or cause change. It exists in various forms, including kinetic, potential, thermal, and chemical energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass of the object and its velocity.

Front

What is potential energy?

Back

Potential energy is stored energy based on an object's position or state. For example, a raised object has gravitational potential energy.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, related to its temperature.

Front

What is chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like food or fuel.

Front

How is energy transferred when running?

Back

When you run, chemical energy from your body is converted into kinetic energy (movement) and thermal energy (heat).

Front

Can energy be lost?

Back

Energy cannot be lost; it can only be transformed from one form to another.

Front

What is the role of energy in swinging a tennis racket?

Back

Energy is used to swing a tennis racket, as it is transferred from the player to the racket to hit the ball.

Front

What is the relationship between force and energy?

Back

Energy is used to apply force, which can change the motion of an object.

Front

What happens to kinetic energy when an object starts moving?

Back

When an object starts moving, kinetic energy is gained, not transferred to potential energy.