Energy (PE/KE & Conversions)

Front

What is Potential Energy (PE)?

Back

Potential Energy (PE) is the energy stored in an object due to its position or state. It is often associated with gravitational energy, where an object at a height has the potential to fall.

Front

What is Kinetic Energy (KE)?

Back

Kinetic Energy (KE) is the energy of an object in motion. It depends on the mass of the object and the square of its velocity, expressed as KE = 1/2 mv².

Front

What happens to Kinetic Energy at the highest point of a pendulum swing?

Back

At the highest point of a pendulum swing, Kinetic Energy is at its lowest, while Potential Energy is at its highest.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What form of energy is usually considered 'wasted' in energy transformations?

Back

Wasted energy is usually released as heat during energy transformations.

Front

What type of energy is associated with chemical reactions?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like atoms and molecules.

Front

In energy transformations, what is the first form of energy in a battery-powered device?

Back

The first form of energy in a battery-powered device is Electrical energy.

Front

What is an example of Mechanical Energy?

Back

Mechanical Energy is the sum of Potential Energy and Kinetic Energy in an object. For example, a moving car has Mechanical Energy due to its motion (KE) and its position (PE).

Front

What is Thermal Energy?

Back

Thermal Energy is the total kinetic energy of particles in a substance, often felt as heat.

Front

What is an example of a transformation from Chemical Energy to Kinetic Energy?

Back

An example is a car engine, where the chemical energy in fuel is transformed into kinetic energy to move the car.