EM WAVES

What is a vacuum? 

• A space with only air in it
• A space with NO matter at all present
• A machine you use to do your chores

EM waves  

• Must travel through a vacuum
• Can travel through a medium or a vacuum
• Are the same type of wave as mechanical waves
• Can only travel through a vacuum

Tags

NGSS.MS-PS4-2

Predict which EM wave could cause more damage (have more energy.)

• Radio wave

• UV wave

• X-ray

• Gamma ray

Tags

NGSS.HS-PS4-4

EM waves have the same speed but different:

• frequency & medium 
• wavelength & frequency
• medium & wavelength
• color & medium

In ____________ waves energy can be transferred through _________________ in a medium.

• mechanical, vibrations

• transverse , stacking objects

• longitudinal, an ordered sequence

• EM, colors

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1

Which of these waves cannot travel in a vacuum?

• visible light

• sound wave

• electromagnetic wave

• microwave

Which letter represents wavelength?

• A

• B

• C

• D

Tags

NGSS.HS-PS4-1

Which letter represents amplitude?

• A
• B
• C
• D

Tags

NGSS.MS-PS4-1

Which wave has a greater frequency?

• A
• B

Tags

NGSS.MS-PS4-1

If a wave has a greater frequency, what happens to number of waves per second?

• increases
• decreases
• stays the same

Tags

NGSS.HS-PS4-1