Energy

Front

What is energy?

Back

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

Front

What is kinetic energy?

Back

Kinetic energy is the energy of 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 mechanical energy?

Back

Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work.

Front

What is the formula for kinetic energy?

Back

Front

What is the formula for potential energy?

Back

Front

What happens to energy in a closed system?

Back

In a closed system, energy is conserved; it can change forms but cannot be created or destroyed.

Front

What is an example of energy transformation?

Back

An example of energy transformation is when a battery-operated radio converts chemical energy from the battery into electrical energy, which is then transformed into sound energy.

Front

At which point in a pendulum's swing is kinetic energy highest?

Back

Kinetic energy is highest at the lowest point of the swing.

Front

At which points in a pendulum's swing is potential energy greatest?

Back

Potential energy is greatest at the highest points of the swing.