Understanding Energy and Motion

Front

What is energy?

Back

The ability to do work or cause change.

Front

Which of the following is an example of kinetic energy?

• A book on a shelf.
• A moving car.
• A compressed spring.
• A charged battery.

Back

A moving car.

Front

What is the formula for work?

Back

Work = Force × Distance

Front

What happens to kinetic energy (KE) as potential energy (PE) decreases?

Back

KE increases.

Front

Which type of energy is stored in the nucleus of atoms?

Back

Nuclear energy

Front

What is the relationship between gravitational potential energy (GPE) and height?

Back

GPE increases as height increases.

Front

Example of energy transformation:

• Heat moving from a stove to a pot.
• Sunlight converting into chemical energy in plants.
• A ball rolling down a hill.
• A battery powering a flashlight.

Back

Sunlight converting into chemical energy in plants.

Front

What is power in terms of work and time?

Back

Power = Work ÷ Time

Front

Which energy type can be both potential and kinetic?

Back

Mechanical energy

Front

What is the difference between energy transformation and energy transfer?

Back

Transformation is energy changing forms; transfer is energy moving between objects.