Free Printable Ch 5 Electromagnetic Waves

1.

The distance between two consecutive crests of a wave is called the:

a)

Frequency

b)

Wavelength

c)

Amplitude

d)

Period

2.

The number of wave cycles passing a point per second is the:

a)

Amplitude

b)

Velocity

c)

Frequency

d)

Wavelength

3.

If the frequency of a wave increases, its wavelength must:

a)

Increase

b)

Decrease

c)

Stay the same

d)

Become zero

4.

The height of a wave measured from the center to the crest is its:

a)

Period

b)

Amplitude

c)

Wavelength

d)

Velocity

5.

The period of a wave is defined as:

a)

Time for one full wave cycle

b)

Distance traveled in one second

c)

Height of the wave

d)

Energy of the wave

6.

Which wave characteristic determines the energy of electromagnetic waves?

a)

Amplitude

b)

Wavelength

c)

Frequency

d)

Velocity

7.

A wave with a long wavelength will have:

a)

High frequency

b)

Low frequency

c)

High amplitude

d)

Short period

8.

The units of frequency are:

a)

Meters

b)

Seconds

c)

Hertz

d)

Joules

9.

As wavelength decreases, photon energy:

a)

Decreases

b)

Increases

c)

Stops

d)

Remains constant

10.

Amplitude controls the wave’s:

a)

Energy

b)

Velocity

c)

Color

d)

Frequency

11.

The velocity of an electromagnetic wave in a vacuum is:

a)

$1.5 \times 10^6$ m/s

b)

$3 \times 10^8$ m/s

c)

$9 \times 10^9$ m/s

d)

$6 \times 10^7$ m/s

12.

The wave equation is:

a)

$v = f \div \lambda$

b)

$\lambda = f \times v$

c)

$v = f \times \lambda$

d)

$v = \lambda^2 \div f$

13.

The electromagnetic wave formula relating energy is:

a)

$E = mc^2$

b)

$E = hf$

c)

$E = \tfrac12 mv^2$

d)

$E = v/\lambda$

14.

If frequency doubles, photon energy will:

a)

Stay the same

b)

Decrease by half

c)

Double

d)

Quadruple

15.

A wave has a wavelength of 6 meters and frequency of 2 Hz. Its velocity is:

a)

3 m/s

b)

8 m/s

c)

12 m/s

d)

14 m/s

16.

If the frequency of a wave is $4 \times 10^{14} Hz$ , and c = $3 \times 10^{8} m/s$ , the wavelength is:

a)

7.5 × 10^−7 m

b)

1.33 m

c)

1.5 × 10^5 m

d)

7.5 m

17.

Energy of a photon is directly proportional to its:

a)

Amplitude

b)

Wavelength

c)

Frequency

d)

Period

18.

Which wave has the lowest frequency?

a)

X-rays

b)

Gamma rays

c)

Radio waves

d)

Ultraviolet

19.

Which EM band has the highest energy?

a)

Radio

b)

Visible

c)

Microwave

d)

Gamma

20.

X-rays are between which two EM spectrum regions?

a)

Visible and ultraviolet

b)

Gamma and ultraviolet

c)

Infrared and visible

d)

Radio and microwave

21.

Medical x-rays have wavelengths measured in:

a)

Meters

b)

Nanometers

c)

Angstroms

d)

Centimeters

22.

Which wave is ionizing?

a)

Radio

b)

Microwave

c)

Ultraviolet (high end)

d)

Infrared

23.

Which EM band has the longest wavelength?

a)

Gamma

b)

Ultraviolet

c)

Radio

d)

X-ray

24.

The EM spectrum is arranged according to increasing:

a)

Wavelength

b)

Frequency and energy

c)

Amplitude

d)

Velocity

25.

X-rays behave primarily like:

a)

Particles

b)

Waves

c)

Electrical charges

d)

Mechanical vibrations

26.

X-rays have:

a)

No mass, no charge

b)

Mass but no charge

c)

Charge but no mass

d)

Mass and charge

27.

X-rays travel in:

a)

Curved paths

b)

Straight lines

c)

Random directions

d)

Spirals

28.

X-rays can ionize atoms because of their:

a)

Long wavelength

b)

High amplitude

c)

High frequency

d)

Low velocity

29.

X-rays differ from gamma rays because of their:

a)

Frequency

b)

Origin

c)

Velocity

d)

Charge

30.

X-rays are produced in:

a)

The nucleus

b)

The electron shell

c)

Tissue

d)

DNA

31.

Gamma rays come from:

a)

Electron transitions

b)

Bremsstrahlung interactions

c)

Nuclear decay

d)

Magnetism

32.

Shorter x-ray wavelengths produce:

a)

Lower energy

b)

Higher energy

c)

No ionization

d)

Slower velocity

33.

X-rays travel at:

a)

$3 \times 10^8$ m/s

b)

1 × 10^6 m/s

c)

3 × 10^5 m/s

d)

1 × 10^8 m/s

34.

The smallest quantity of EM energy is a:

a)

Wavelet

b)

Photon

c)

Neutrino

d)

Ion

35.

Wave-particle duality means:

a)

EM waves exist only as particles

b)

EM waves exist only as waves

c)

EM waves behave as both waves and particles

d)

EM waves have mass

36.

Photon energy is measured in:

a)

eV

b)

Coulombs

c)

Watts

d)

Newtons

37.

A photon’s energy is determined by its:

a)

Source

b)

Wavelength

c)

Velocity

d)

Direction

38.

Photon momentum increases with:

a)

Wavelength

b)

Frequency

c)

Amplitude

d)

Mass

39.

A wave has a frequency of 5 Hz and velocity of 20 m/s. Its wavelength is:

a)

2 m

b)

4 m

c)

5 m

d)

6 m

40.

An EM wave has a wavelength of $2 \times 10^{-9}$ m. Its frequency is approximately:

a)

$1.5 \times 10^{17}$ Hz

b)

$6 \times 10^{7}$ Hz

c)

$1.5 \times 10^{9}$ Hz

d)

$6 \times 10^{3}$ Hz

41.

A photon has a wavelength of $1 \times 10^{-12}$ m. Its frequency is:

a)

$3 \times 10^{20}$ Hz

b)

$9 \times 10^{4}$ Hz

c)

$1 \times 10^{6}$ Hz

d)

$1 \times 10^{15}$ Hz

42.

The penetrating ability of x-rays increases with:

a)

Longer wavelength

b)

Lower frequency

c)

Higher frequency

d)

Increased period

43.

Diagnostic x-ray wavelengths are typically around:

a)

0.1–1 Å

b)

1–10 m

c)

700–1200 nm

d)

1–3 cm

44.

Higher energy x-rays produce:

a)

More scatter

b)

Less scatter

c)

Lower penetration

d)

No attenuation

45.

X-ray photon energy is typically expressed in:

a)

Hertz

b)

Meters

c)

Kiloelectronvolts

d)

Joules

46.

Increasing the kVp on an x-ray machine increases:

a)

Photon mass

b)

Photon speed

c)

Photon wavelength

d)

Photon energy

47.

Reducing wavelength of the primary beam will:

a)

Reduce penetration

b)

Increase penetration

c)

Reduce photon energy

d)

Stop the beam

48.

The inverse relationship between wavelength and energy is described by:

a)

E = hf

b)

E = mc^2

c)

λ = v × f

d)

f = 1/T

49.

Sound waves are _______________

a)

Transverse waves

b)

Longitudinal waves

c)

Circular waves

d)

Seismic waves

50.

Which of the following statements can be concluded from the table?

a)

X-Ray waves have a lower frequency than infrared waves.

b)

Microwaves have a smaller wavelength than visible light.

c)

The speed of all electromagnetic waves are equal.

d)

The frequency and wavelengths are equal for each type of radiation.

51.

Which electromagnetic radiation has the shortest wavelength?

a)

infrared

b)

gamma

c)

microwave

d)

ultraviolet

52.

Which is an example of a longitudinal wave?

a)

light wave

b)

sound wave

c)

visible wave

d)

radio wave

53.

What high energy waves are given off by radioactive materials?

a)

Gamma Rays

b)

Microwaves

c)

Ultraviolet Rays

d)

Radio Waves

Ch 5 Electromagnetic Waves

Total questions: 53

Worksheet time: 53mins

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