Chapter One (Bushong) "penguins," and Powerpoint

Question 0

Energy

Answer 0

Is the ability to do work.

Question 1

Mass

Answer 1

Is the quantity of matter as described by its energy equivalence.

Question 2

Radiation

Answer 2

Is the transfer of energy

Question 3

Ionization

Answer 3

Is the removal of an electron from an atom.

Question 4

To provide an x-Ray beam that is satisfactory for imaging,

Answer 4

You must supply the x-Ray tube with a high voltage and an electric current.

Question 5

Radiology emerged as a medial speciality because of

Answer 5

The Snook transformer and the Coolidge x-Ray tube.

Question 6

Because of effective radiation protection practices,

Answer 6

Radiology is now considered a safe occupation.

Question 7

ALARA

Answer 7

As Low As Reasonably Achievable.

Question 8

The second:

Answer 8

Is based on the vibration of atoms of cesium.

Question 9

The same system of units must always be used when:

Answer 9

One is working on problems or reporting answers.

Question 10

The velocity of light is constant and is symbolized by:

Answer 10

c: c = 3 x 10^8 m/s.

Question 11

Newton’s first law:

Answer 11

Inertia - a body will remain at rest or will continue to move with constant velocity in a straight line unless acted on by an external force.

Question 12

Newton’s second law

Answer 12

Force - the force (F) that acts on an object is equal to the mass (m) of the object multiplied by the acceleration (a) produced.

Question 13

Newton’s third law

Answer 13

Action/reaction - for every action, there is an equal and opposite reaction.

Question 14

Weight is the product of:

Answer 14

Mass and the acceleration of gravity on Earth: 1 lb = 4.5 N.

Question 15

Momentum is the product of:

Answer 15

Mass and velocity.

Question 16

Work is he product of:

Answer 16

Force and distance

Question 17

Power is the quotient of

Answer 17

Work/time

Question 18

Energy is

Answer 18

The ability to do work.

Question 19

Heat is:

Answer 19

The kinetic energy of the random motion of molecules.

Question 21

The coulumb is:

Answer 21

The unit of radiation exposure or intensity.

Question 21

The sievert (Sv) is:

Answer 21

The unit of occupational radiation exposure and effective dose.

Question 22

The gray is:

Answer 22

The unit of Radiation Absorbed Dose (same as the rad).

Question 23

The becquerel (Bq) is:

Answer 23

The unit of radioactivity.

Question 24

The formula to convert Celcius to Fahrenheit is:

Answer 24

F= 9/5(C+32)

Question 25

The formula to convert Fahrenheit to Celcius is:

Answer 25

C = 5/9(F-32)

Question 26

The formula to convert Celcius to Kelvin is:

Answer 26

K = C + 273

Question 27

The Roentgen =

Answer 27

Coulombs per kilogram (C/kg)

Question 28

The rad =

Answer 28

gray

Question 29

The rem =

Answer 29

sievert

Question 30

The curie =

Answer 30

bequeral

Question 31

Electromagnetic energy

Answer 31

energy traveling through space that deals with electric and magnetic properties. ( x-rays is one type of electromagnetic energy.)

Question 32

True/False: Energy cannot be changed.

Answer 32

False. Energy and matter are interchangable. In radiology, energy is transformed from electrical (x-ray equipment0 to electromagnetic (x-ray) to chemical energy (to produce a film) or electric energy (to produce a signal for digital images.)

Question 33

Explain how x-rays have a dual nature

Answer 33

They act like waves (they have wavelength and frequency) and particles (they are photons that act as bundles of energy.)