Chapter 1 Concepts

Question 1

Who discovered X-rays and When?

Answer 1

Wihelm Conrad Roentgen on November 8, 1895

Question 2

Fundaments quantity measurements expressed in the British System

Answer 2

Mass: Pound
Length: Foot
Time: Second

Question 3

Fundamental quantity measurements expressed in the SI system.

Answer 3

Mass: Kilogram
Length: Meter
Time: Second

Question 4

What is mass?

Answer 4

the quantity of mater contained in an object. It does not change with gravitational force or when a substance changes form.

Question 5

Velocity (v)

Answer 5

Measures speed. m/s
d= distance t= time
v=d/t

Question 6

Acceleration (a)

Answer 6

Change in velocity m/s^2
Vf= final velocity Vo= Initial velocity t= time
a=Vf-Vo/t

Question 7

Force (F)

Answer 7

A push, pull, or other action that changes the motion of an object. newtons (N)
m=mass a= acceleration
F=m(a)

Question 8

Momentum (p)

Answer 8

kg-m/s
m=mass v=velocity
p=m(v)

Question 9

Work (work)

Answer 9

Joule (J)
F=force d= distance
work=F(d)

Question 10

Power (P)

Answer 10

Watts (W)
t=time
P=work/t

Question 11

Newton’s First Law of Motion

Answer 11

an object at rest will stay at rest unless acted on by an external force. and vise versa

Question 12

Define Energy

Answer 12

The ability to do work

Question 13

Kinetic Energy

Answer 13

Energy being expended. The act of doing work

Question 14

Potential Energy

Answer 14

The ability to do work based upon an objects state or position

Question 15

Roentgen

Answer 15

Coulomb/kilogram

Quantifies radiation intensity

Question 16

Radiation Absorbed Dose (rad)

Answer 16

gray

Quantifies the biologic effects of radiation on humans and animals

Question 17

Radiation Equivalent Man (rem)

Answer 17

Sievert

Quantifies occupational exposure or dose equivalent

Question 18

Curie

Answer 18

Becquerel

quantifies radioactivity.

Question 19

X-ray properties defined by roentgen

Card 1/2

Answer 19

1)Highly penetrating, invisible rays that are a form of electromagnetic radiation. 2) Electrically neutral and therefore are not affected by either electric or magnetic fields 3) Can be produced over a wide variety of energies and wavelengths 4. Release very small amounts of heat upon passing through matter.

Question 20

X-Ray properties defined by Roentgen Cont.

Card 2/2

Answer 20

1. travels in straight lines 2. travels at the speed of light 3. can ionize matter 4. produces chemical and biological changes in matter through ionization and excitation 5. causes fluorescence in certain crystals 6. cannot be focused by a lens 7. affects photographic film 8. produces secondary scatter radiation.