Waves And Stuff

Question 1

Formula for wave speed?

Answer 1

Wave speed = wavelength x frequency

Question 2

Unit for wave speed

Answer 2

m/sec

Question 3

Unit for wavelength

Answer 3

m

Question 4

Unit for frequency

Answer 4

Hz

Question 5

What are mechanical waves

Answer 5

Disturbances that transmit energy through matter

Question 6

What is sound

Answer 6

The vibration of matter as it is disturbed by energy

Question 7

What is a medium

Answer 7

The matter through which a mechanical wave can travel

Question 8

What is used to measure ocean depth?

Answer 8

Sonar

Question 9

What detects earthquakes

Answer 9

Seismograph

Question 10

What are the two mechanical waves

Answer 10

Transverse, and longitudinal waves

Question 11

Transverse waves

Answer 11

The particles of the medium vibrate in a direction perpendicular to the direction that the wave moves

Question 12

Longitudinal waves

Answer 12

The particles of the medium vibrate in a direction parallel to the direction that the wave moves

Question 13

Example of longitudinal waves

Answer 13

Slinky

Question 14

What’s the bottom of a wave called

Answer 14

Trough

Question 15

What’s the distance between the midpoint and the crest called

Answer 15

Amplitude

Question 16

What is the midpoint also called

Answer 16

Rest

Question 17

What is the wavelength

Answer 17

The distance from one crest to another

Question 18

The higher the amplitude, the higher the ____

Answer 18

Energy

Question 19

What is frequency

Answer 19

The number of crests that pass a certain point in a given amount of time

Question 20

What is rarefaction

Answer 20

Low pressure areas (not clumped together)

Question 21

What is compression

Answer 21

High pressure areas (clumped together)

Question 22

Electromagnet waves

Answer 22

Transmit energy through matter and/or empty space

Question 23

What is speed of light

Answer 23

3x10 to power of 8 m/s

Question 24

What type of wave is an electromagnetic wave

Answer 24

Is a transverse wave because the electric and magnetic fields that make up the wave are perpendicular to each other

Question 25

When does an electromagnetic wave begin

Answer 25

When a charged particle vibrates, causing the electric field around it to vibrate as well

Question 26

Radio waves

Answer 26

Emitted at radio and tv stations, they convert these waves into sound and picture

Question 27

Infrared radiation

Answer 27

Sensed as heat because it causes molecules to vibrate. Used for heat lamps

Question 28

Ultraviolet radiation

Answer 28

Need sunscreen to protect skin from this type of radiation from the sun

Question 29

What can see UV lights

Answer 29

Bees

Question 30

Gamma rays

Answer 30

Extremely high frequency that are emitted during a nuclear explosion and radioactive materials

Question 31

Microwaves

Answer 31

Emitted by power source in microwave oven. Water molecules absorb microwaves and increase temperature of food

Question 32

Visible light

Answer 32

Violet is shortest wavelength, red is longest

Question 33

X-rays

Answer 33

Bones and teeth block x-rays, making it possible to take pictures of them

Question 34

Longest - shortest wavelength

Answer 34

Radio waves - Infrared - ultraviolet - gamma rays

Question 35

Lowest - highest frequency

Answer 35

Microwaves - visible light - x-rays