Unit 1 Review: Energy & Waves

1

100

The energy of motion. 

Kinetic energy. 

200

The transfer of energy through direct contact between particles. 

Conduction

300

Energy carried by vibrations that travel through air, water, or solids

Sound energy

400

The height of the wave from the resting position to the peak or the trough.

Amplitude

500

How fast the particles move and how many particles there are.

=speed x number of particles

Thermal Energy

2

100

A space with no matter (no air, no particles)

Vacuum

200

The transfer of energy by the movement of fluids (liquids or gases). 

Convection

300

Stored energy due to position. 

Potential energy

400

How does sound change when the amplitude decreases?

The volume decreases. 

500

Sarah held two magnets so that their north poles were touching. The magnets were repelling one another.  Then, she moved magnets away from each other without changing their orientations.  

Does the magnetic potential energy increase or decrease as she moves them away?

The magnetic potential energy decreases.

3

100

Which state of matter has the most energy?

Gas

200

The transfer of energy through electromagnetic waves.

Radiation

300

A disturbance that transfers energy from one place to another.

Wave

400

As wavelength increases, frequency ____________.

Decreases

500

You touch a metal spoon that's been sitting in a hot pan and it burns your hand. Which type of heat transfer occurred?

Conduction

4

100

In which state of matter do the particles move fluidly around and slide past each other?

Liquid

200

The material that a wave travels through (can be solid, liquid, or gas). 

Medium

300

Energy stored due to an object's height above ground. 

Gravitational potential energy. 

400

When light bends due to changing speed when entering a new medium.

Refraction

500

What are the two features that impact the amount of energy in a wave?

1. amplitude

2. frequency

5

100

Which state of matter has the least amount of energy?

Solid

200

What are the two variables (things) that affect kinetic energy?

Mass and speed

300

A vibration of energy that travels as waves in the electric and magnetic field. 

Electromagnetic (EM/light) waves

400

How many waves per second.

Frequency

500

Define the Law of Conservation of Energy

Energy cannot be created or destroyed; it can only change forms or be transferred from one system to another.