Deck 1: Radiation and Its Discovery

Question 1

A _____ is a small, discrete bundle of energy.

A) phaser
B) quark
C) photon
D) mesion

Answer 1

photon

Question 2

When were x-rays discovered?

A) October 8, 1985
B) November 8, 1895
C) January 23, 1896
D) August 15, 1902

Answer 2

November 8, 1895

Question 3

X-ray photons travel at the speed of light in a vacuum.

Answer 3

True

Question 4

X-rays have which of the following properties?

A) Electrical properties
B) Magnetic properties
C) Chemical properties
D) a and b

Question 5

The speed of light is:

A) 3 ´ 108 meters per second.
B) 3 ´ 108 miles per second.
C) 186,000 miles per second.
D) a and c.

Question 6

X-rays are invisible.

Question 7

Which of the following is a correct description of the relationship between the wavelength and the frequency of the x-ray photon?

A) Wavelength and frequency are directly proportional.
B) Wavelength and frequency are inversely related by the square root of lambda.
C) Frequency and wavelength are inversely related.
D) Wavelength and frequency have no relationship to each other.

Question 8

The first radiograph produced by Roentgen, of his wife's hand, required an exposure time of:

A) 15 seconds.
B) 150 seconds.
C) 15 minutes.
D) 150 minutes.

Question 9

The first Nobel Prize for physics was received in 1901 by:

A) Marie Curie.
B) Crookes.
C) Wilhelm Roentgen.
D) Einstein.

Question 10

The letter "x" in x-ray is the symbol for:

A) electricity.
B) the unknown.
C) penetrating.
D) discovery.

Question 11

Barium platinocyanide was the:

A) type of dark paper Roentgen used to darken his laboratory.
B) material Roentgen used to produce the first radiograph of his wife's hand.
C) metal used to produce the low-vacuum tube.
D) fluorescent material that glowed when the tube was energized.

Question 12

X-rays used in radiography have wavelengths that are measured in:

A) angstroms.
B) millimeters.
C) centimeters.
D) inches.

Question 13

The distance between two successive crests of a sine wave is known as:

A) an angstrom.
B) frequency.
C) the Greek letter nu.
D) wavelength.

Question 14

Which of the following terms could be defined as the instantaneous production of light caused by an interaction between a type of energy and some element or compound?

A) Phosphorescence
B) Afterglow
C) Glowing
D) Fluorescence

Question 15

X-ray photons are capable of traveling around corners.

Question 16

What type of tube was Roentgen working with in his lab when x-rays were discovered?

A) Crookes tube
B) Fluorescent tube
C) High-vacuum tube
D) Wurzburg tube

Question 17

Erythema, an early sign of biological damage due to x-ray exposure, is:

A) reddening of the skin.
B) a malignant tumor.
C) a chromosomal change.
D) one of the most serious effects of x-ray exposure.

Question 18

X-rays carry a negative charge that causes ionization.

Question 19

Chemical changes may occur as a result of exposure to ionizing radiation.

Question 20

The frequency of a wave is the number of waves passing a given point per given unit of time. Frequency is measured in:

A) angstroms.
B) Hertz.
C) inches.
D) eV.