Nature of Ionizing Radiation

Question 1

electromagnetic radiation is the propagation of energy through space as a –

Answer 1

combination of electric and magnetic fields

Question 2

describe wavelength of high energy photons

Answer 2

short wavelengths

Question 3

what happens when an e- moves from an outer shell to inward?

Answer 3

gives off energy (in the form of x-rays)

Question 4

what is the difference between the propagation of energy?

Answer 4

via particles = mass

via electromagnetic radiation = no mass, pure energy

Question 5

What does a radioactive decay of an element result in?

Answer 5

emission of particulate radiation

Question 6

alpha particle

Answer 6

mass and + charge

Question 7

beta particle

Answer 7

mass and - charge

Question 8

what is EM radiation propagated as?

Answer 8

bundle of energy called photons

Question 9

gamma and x-rays are important because –

Answer 9

sufficient energy to penetrate tissues –> show skeletal structures

Question 10

as energy increases it can knock e- around and cause –

Answer 10

ionization

Question 11

if something is ionizing, ions will combine with each other –>

Answer 11

unstable molecules = biologically damaging

Question 12

Can low energy alpha particles be hazardous?

Answer 12

directly touch/ingest

Question 13

blocks alpha

Answer 13

paper/ first few layers of skin

Question 14

blocks beta

Answer 14

Al

Question 15

blocks gamma and x-rays

Answer 15

lead

Question 16

blocks neutrons

Answer 16

concrete