Phase II Block 5 EM Waves and Interactions

Question 1

EM Spectrum

Answer 1

Radio
Infrared
Visible
UV
X-ray
Gamma

Question 2

Radio

Answer 2

Non ionizing - Radio, microwaves, GPS, radars

Question 3

Infrared

Answer 3

Non-ionizing - Heat signatures, fiberoptic

Question 4

VIsible

Answer 4

Non-ionizing - rainbows

Question 5

UV

Answer 5

Ionizing - sun, solar panel

Question 6

X-ray

Answer 6

Ionizing - x-ray machine

Question 7

Gamma

Answer 7

Ionizing - stars, nuclear fission or decay

Question 8

EM wave behavior

Answer 8

EM radiation can reflection, transmission, absorption

Question 9

Reflection

Answer 9

Light bounces off a medium.
Randomly polarized - reflects linear
Circular polarized - reflect handedness 
- Specular: shows reflection
- Diffuse: scatters reflection

Question 10

Transmission

Answer 10

Light passes through a medium

- REFRACTION - Light bends as it passes through the medium (Snell’s Law how much light bends

Question 11

Refraction

Answer 11

Light bending through a medium. Snell’s law determines how much light bends

Question 12

Scattering

Answer 12

Results of reflection and transmission inside the medium leading to a loss

Question 13

Absorption

Answer 13

Light gets absorbed into the medium - heat or electricity
Solar panel (photoelectric effect.

Question 14

Attenuation

Answer 14

Loss of strength via scattering and absorption

Question 15

Faraday Rotation

Answer 15

Magnetic field rotates light

Question 16

Diffraction

Answer 16

Light bending around an object as it passes through a medium.

Question 17

Aperture

Answer 17

opening the light travels through

Question 18

Interference (constructive)

Answer 18

Two waves in phase creating a bigger wave

Question 19

Interference (destructive)

Answer 19

Two waves out of phase creating smaller waves

Question 20

Diffraction interference

Answer 20

Young’s Double Slit - proving interference patterns are constructive and destructive and light is waves