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WorksheetsMr. Putman 8th Grade Science Chapter 18
Total questions: 13
Worksheet time: 10mins
Name
Class
Date
1.
The speed of electromagnetic waves is ____.
a)
greater in water than in air
b)
different for each frequency in a vacuum
c)
300,000 km/s in a space
d)
less for light than for x rays
2.
The number of waves that pass a certain point in one second is the wave’s ____.
a)
frequency
b)
amplitude
c)
wavelength
d)
intensity
3.
Sunscreen protects the skin from damage caused by ____.
a)
infrared waves
b)
visible light
c)
ultraviolet radiation
d)
all of the above
4.
A wave transfers ____.
a)
energy
b)
matter
c)
vibrating electric charges
d)
electromagnetic energy
5.
Electromagnetic waves are produced by ____.
a)
positive and negative charges
b)
magnetic fields
c)
charged particles in motion
d)
electromagnetic energy
6.
Vibrating charged particles make ____ fields.
a)
electric
b)
magnetic
c)
radio
d)
both a and c
7.
Electromagnetic waves ____.
a)
are compressional
b)
carry radiant energy
c)
must have a medium
d)
are generated by static electricty
8.
The longest wavelength in the electromagnetic spectrum is the ____.
a)
gamma ray
b)
ultraviolet ray
c)
radio wave
d)
infrared ray
9.
The electromagnetic waves with wavelengths slightly longer than visible light are ____.
a)
microwaves
b)
infrared waves
c)
ultraviolet waves
d)
x ray
10.
The frequency of purple light is ____ than that of yellow light.
a)
higher than
b)
lower than
c)
the same as
d)
faster than
11.
____ are used for medical imaging.
a)
Ultraviolet waves
b)
Infrared waves
c)
X rays
d)
Gamma rays
12.
Your body needs ____ to make vitamin D.
a)
infrared waves
b)
mircowaves
c)
visible light
d)
ultraviolet waves
13.
Television uses ____ to transmit signals.
a)
microwaves
b)
radio waves
c)
ultraviolet waves
d)
inferred waves
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