Free Printable WAVES UNIT TEST

1.

Why can television satellites, which broadcast information as electromagnetic radiation, send signals from the vacuum of space?

a)

Because electromagnetic radiation increases as the distance increases

b)

Because electromagnetic radiation does not need a medium to travel through.

c)

Because space does not provide a medium that will block the satellite signals

d)

Because space is so vast that light can spread out to the full size and strength

2.

In which medium would sound travel the fastest?

a)

across a room

b)

in a lake

c)

through a spoon

d)

through outer space

3.

You see lightning before you hear thunder because

a)

light waves can travel through a vacuum.

b)

light waves travel faster than sound waves

c)

sound waves cannot travel through the air

d)

sound waves travel faster than light waves

4.

Compression or sound waves behave a lot like transverse or electromagnetic waves. Compression waves exhibit ALL BUT one of the following behaviors. That is

a)

reflection

b)

transfer energy

c)

refraction

d)

travel through a vacuum

5.

Which characteristic is the SAME for all forms of electromagnetic energy on the EM spectrum?

a)

They all travel at the same speed

b)

They all have the same amount of stored energy

c)

They all have the same size wavelengths

d)

They all can be detected by the human eyes

6.

Which type of wave would actually slow down when moving from the air into the ocean?

a)

Sound Waves

b)

Earthquake waves

c)

Light Waves

d)

Ocean surface waves

7.

Which of these is a TRUE statement?

a)

Sound travels through gases easier than liquids.

b)

Sound travels through solids easier than liquids.

c)

Sound sometimes travels easier through gases than solids.

d)

Sound travels through solids, liquids, and gases at the same speed.

8.

Sunlight is slowed MOST when traveling through

a)

water.

b)

the atmosphere

c)

a vacuum.

d)

None of these, as light always travels at the same speed.

9.

In this technological world, people are starting to worry about the effects of radiation and electromagnetic waves on living tissue. A study was conducted that examined pregnant women's exposure to various electromagnetic waves and the incidence of mutations that resulted in birth defects. Scientists studied the effects of the following ER waves: UV, infrared, microwaves, radio waves, X-rays, and visible light. According to the study, only X-rays produced a noticeable increase in mutations that resulted in

birth defects. Which letter MOST likely represents X-rays?

a)

A

b)

G

c)

C

d)

D

10.

The visible light spectrum is usually said to consist of red, orange, yellow, green, blue, indigo, and violet. All of these colors combined make

a)

Blue ocean

b)

White light

c)

Black skies

d)

a color wheel

11.

The earth receives energy from the sun. You feel the energy on your skin every time you go outside on a sunny day. Which form of energy causes you to get a sunburn if you stay in the sun too long?

a)

Visible

b)

ultraviolet

c)

gamma rays

d)

radio waves

12.

The Sun is a _______ that sends heat and ________ energy to Earth.

a)

star; electrical

b)

galaxy; light

c)

constellation; light

d)

star; light

13.

The different colors revealed as white light passes through a prism represent

a)

different temperatures of white light.

b)

different levels of refraction in white light.

c)

different amounts of energy in white light.

d)

different levels of absorption in white light.

14.

How are the energy of infrared, visible light and ultraviolet rays related? And why?

a)

Infrared contains the least energy and ultraviolet contains the most energy. The energy of a wave is proportional to its wavelength.

b)

Infrared contains the most energy and ultraviolet contains the least energy. The energy of a wave is proportional to its wavelength.

c)

High frequency and energy of radio waves mean that they penetrate much farther through matter than uv or x-rays.

d)

The energy of the lower frequency ultraviolet waves and x-rays is high enough to be considered ionizing radiation.

15.

All forms of electromagnetic energy on the EM spectrum

a)

Travel at the same speed

b)

Have the same amount of stored energy

c)

Have the same size wavelengths

d)

Can be detected by the human eye

16.

If Tom has on a blue shirt, what color(s) is/are being reflected and what color(s) is/are being absorbed?

a)

Red is being reflected, all other colors are absorbed

b)

Blue is being reflected, all other colors are absorbed

c)

Black is being reflected, all other colors are absorbed

d)

White is being reflected, black is being absorbed.

17.

What property of a magnifying lens is most responsible for allowing it to magnify a penny?

a)

Reflection

b)

Diffraction

c)

Refraction

d)

Contraction

18.

On the electromagnetic spectrum, the longer the wavelength, the __________energy the light wave carries.

a)

more

b)

less

c)

more frequent

d)

faster

19.

Classify the following objects according to the behavior of the light waves:

a)

I Opaque, II translucent, III transparent

b)

I Translucent, II transparent, III opaque

c)

I Transparent, II opaque, III translucent

d)

I Transparent, II translucent, III opaque

20.

The heat produced by the Sun travels as radiation, to the Earth, through what type of waves?

a)

Mechanical waves

b)

Sound waves

c)

Electromagnetic waves

d)

Ocean waves

WAVES UNIT TEST

Total questions: 20

Worksheet time: 18mins

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