concept three

Question 1

how do electromagnetic waves act as both a wave and as a particle?

Answer 1

Waves: a disturbance that can carry energy.
Particles: pieces of matter.
-Electromagnetic waves can behave as waves
and as particles, called photons.

Question 2

electromagnetic spectrum

Answer 2

left side:longer wavelength, lower frequency,lower energy
right side:shorter wavelength, higher frequency, higher energy

Question 3

uses for radio waves

Answer 3

MRI’s and RADAR

Question 4

uses for microwaves

Answer 4

cooking and GPS

Question 5

infrared waves

Answer 5

night vision goggles and remote controls

Question 6

visible light waves

Answer 6

seeing and light bulbs

Question 7

ultraviolet waves

Answer 7

kill bacteria and give us vitamin D

Question 8

X-ray

Answer 8

take pictures of bones and CAT scans

Question 9

gamma rays

Answer 9

kill cancer cells and radioactive tracers

Question 10

Doppler effect

Answer 10

as the fire truck move toward the kids the waves are more compressed so shorter wavelength, higher frequency and higher pitch. As the fire truck moves away from the kids the waves are more spread apart so longer wavelength, lower frequency and lower pitch.

Question 11

convex lenses

Answer 11

reading glasses, magnifying glass, or rear view mirror.

Question 12

convex lenses

Answer 12

reading glasses, magnifying glass, or rear view mirror.

Question 13

concave lenses

Answer 13

projector, makeup mirror, or dentist mirror