7th Grade Unit #3 Pre Test Characteristics and behavior of waves

Which frequency of visible light has the longest wavelength?

• Red

• Blue

• Green

• Yellow

In which of the following will light travel the fastest?

• Air

• Water

• Empty space/vacuum

• Glass

Tags

NGSS.MS-PS4-2

Why can you see most objects?

• They absorb light

• Light refracts off them

• They emit light

• Light reflects off them

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NGSS.MS-PS4-2

The image shows the EM spectrum.

What is the main difference between the types of EM waves?

• Shape of the waves

• Frequency of the waves

• Amplitude of the waves

• No difference between them

Tags

NGSS.MS-PS4-1

In the diagram below, what wave property is indicated by #2?

• Trough

• Amplitude

• Crest

• Wavelength

Tags

NGSS.MS-PS4-1

Which of the following can sound travel through?

• Solid

• Liquid

• Gas

• All of the above

Tags

NGSS.MS-PS4-2

Through which of the following does sound travel the fastest?

• Solid

• Liquid

• Gas

• Empty space/vacuum

Tags

NGSS.MS-PS4-2

Identify the differences between light waves and sound waves.

• Light waves can travel through a vacuum, sound waves cannot.

• Sound waves are faster than light waves.

• Light waves require a medium to travel, sound waves do not.

• Sound waves can travel through a vacuum, light waves cannot.

True/False A medium is NOT needed for light to travel.

• True

• False

True/False A medium is NOT needed for sound to travel.

• True

• False

Tags

NGSS.MS-PS4-2