Waves Test

Question 1

List 3 differences between Mechanical and Electromagnetic waves

Answer 1

1. Mechanical waves include sound; electromagnetic waves include light
2. Electromagnetic waves travel through a vacuum.
3. Mechanical waves need a medium.

Question 2

What waves can travel through a vacuum?

Answer 2

Electromagnetic Waves

Question 3

What waves cannot travel through a vacuum?

Question 4

What waves cannot travel through a vacuum?

Answer 4

Mechanical waves can travel through mediums such as solids, liquids, and gases, but cannot travel through a vacuum.

Question 5

Differences between transverse and longitudinal waves.

Answer 5

When a longitudinal (compressions) wave travels through a medium, the medium is displaced the same direction as the wave. Transverse waves displace medium perpendicular.

Question 6

What are 3 examples of wave mediums?

Answer 6

solid, liquid, gas
diamond, ocean, air

Question 7

Refraction

Answer 7

Bending of light

Question 8

Absorption

Answer 8

When light hits atoms in an object and cause them to vibrate. This causes the object to be hot.

Question 9

Transmission

Answer 9

ability for light to pass through an object

Question 10

Reflectiohn

Answer 10

light bouncing off of a surface

Question 11

The denser the medium the _______ light will travel through it.

Answer 11

slower

Question 12

Visible light

Answer 12

Red, orange, yellow, green, blue, indigo, violet

Question 13

Will high or low frequency give high energy?

Answer 13

High energy gives more energy; short wavelength gives high energy

Question 14

Is the speed of all 7 electromagnetic waves the same?

Answer 14

yes

Question 15

How does density play a role in how fast sound waves travel? Does sound travel fastest in a solid, liquid, or gas?

Answer 15

Sound travels faster in more dense objects (solids). The type of material sound travels through determines the speed.

Question 16

Concave lens

Answer 16

Light rays diverge

Question 17

convex lens

Answer 17

light rays converge: refract and come to a focal point

Question 18

Types of radio waves (long wave/low energy)

Answer 18

FM Radio signal and air traffic control

Question 19

Types of microwaves

Answer 19

wifi, radar satellite, NASA probes to investigate low energy radiatiohn

Question 20

Examples of Infrared (temperature change/thermal)

Answer 20

thermal imaging camera, TV remotes, devices that detect temperature change

Question 21

Examples of visible light

Answer 21

optical telescope, lasers

Question 22

Examples of Ultraviolet

Answer 22

disinfection devices for metal, tanning bed

Question 23

examples of x-rays

Answer 23

airport x-ray scanner, radiography (x-ray at a Dr.)

Question 24

Examples of Gamma Rays (short wave/higher energy)

Answer 24

oncology to treat cancer, nuclear plants