chapter 3

Question 1

wave amplitude

Answer 1

half the distance from crest to valley

Question 2

wave frequency

• definition
• equation

Answer 2

number of waves passing a point per second

-number of waves/seconds = Hertz

Question 3

wavelength

Answer 3

distance from point on wave cycle to identical point on adjacent wave

Question 4

EM spectrum

• wavelength
• frequency
• energy

Answer 4

• visible light
• radiowaves
• x-rays

Question 5

energy high to low

Answer 5

1. gamma and x-rays
2. ultraviolet
3. visible light
4. infrared
5. microwaves
6. radiowaves

Question 6

frequency high to low

Answer 6

1. gamma and x-rays
2. ultraviolet
3. visible light
4. infrared
5. microwaves
6. radiowaves

Question 7

wavelength longest to shortest

Answer 7

1. gamma and x-rays
2. ultraviolet
3. visible light
4. infrared
5. microwaves
6. radiowaves

Question 8

inverse square law

Answer 8

radiation intensity with the square of the distance

Question 9

photon

• definition
• 2 properties

Answer 9

smallest quantity if EM energy that can be identified

• 1. travel at speed of light
     
     2. usually behave like waves

Question 10

sound waves

Answer 10

• mechanical waves generated from vibrations within a medium
• longitudinal mechanical waves, which are also known as compression waves
• these waves can travel through solid, liquid, gas

Question 11

EM waves

Answer 11

do not require a medium to travel

• considered to be transverse waves
• able to travel through a vacuum