Energy Concepts and Conversions

Front

What are the 2 factors that determine potential energy?

Back

Position (height) and mass

Front

Explain how mass and position affect potential energy.

Back

As mass increases, potential energy increases. As height increases or the position is pulled back further, the potential energy increases.

Front

What are the 2 factors that determine kinetic energy?

Back

Speed and mass

Front

Explain how mass and speed affect kinetic energy.

Back

As mass increases, kinetic energy increases. As speed increases, kinetic energy increases.

Front

How is kinetic energy transferred?

Back

When an object in motion collides with another object.

Front

What is the formula for gravitational potential energy?

Back

Gravitational Potential Energy = Weight x Height

Front

What is the formula for mechanical energy?

Back

Mechanical Energy = Potential Energy + Kinetic Energy

Front

Give three examples of energy conversions.

Back

Alarm Clock: electrical to light and sound energy; Battery: chemical to electrical energy; Light bulb: electrical to thermal energy.

Front

What happens to some of the energy in all energy conversions?

Back

Thermal (heat energy) is released.

Front

Plants convert ______ energy into _____energy.

Back

light, chemical