Light and Waves

Look at this illustration of a wave.

• Point W is a trough; Point Y is a crest

• Point Y is a trough; Point W is a crest

• Point Y is a trough, Point X is a crest

• Point W is a trough; Point Z is a crest

Tags

NGSS.MS-PS4-1

The Speed of the wave is called the

• Wavelength

• Wave Speed

• Amplitude

• Frequency

The illustration shows a transverse wave. Which bar measures the wavelength of the wave?

• Bar W

• Bar X

• Bar Y

• Bar Z

Tags

NGSS.MS-PS4-1

The height of the wave is called the

• wavelength

• wave speed

• amplitude

• frequency

Tags

NGSS.MS-PS4-1

Wave cycles in a given unit of time is called

• wavelength

• wave speed

• amplitude

• frequency

Which part of the EM spectrum can humans sense without using equipment or technology?

• radio waves

• visible light

• microwaves

• X-rays

Which statement is true about visible light?

• Humans cannot see any light from the electromagnetic spectrum.

• Visible light makes up a small part of the electromagnetic spectrum.

• Visible light has a frequency equal to that of gamma rays.

• Humans can see visible light only as white light.

Visible light in the EM Spectrum

• is a broad band within the spectrum

• is a narrow band within the spectrum

• makes up 50% of the spectrum

• makes up more than 75% of the spectrum

This occurs when light bounces off a surface

• reflection

• refraction

• absorb

• scatter

Tags

NGSS.MS-PS4-2

How is light different from other kinds of waves?

• light travels more slowly

• light must travel through matter

• light does not need matter to travel