Waves

Question 1

Crest

Answer 1

The top of the wave

Question 2

Trough

Answer 2

The bottom of the wave

Question 3

Rest position

Answer 3

The line in the middle

Question 4

Amplitude

Answer 4

The distance from the rest position to the top of the crest or to the bottom of a trough

Question 5

Wavelength

Answer 5

The distance between two crests or two troughs

Question 6

Frequency

Answer 6

How many waves pass a set point in one second

Question 7

Absorption

Answer 7

The process of energy entering material but not exiting the material

Question 8

Reflection

Answer 8

When light bounces off of a material/object

Question 9

Transmission

Answer 9

The act of energy passing through a medium ir vacuum

Question 10

Refraction

Answer 10

When a wave changes direction due to a change in speed of the wave, usually in response to the wave traveling from one medium to another

Question 11

What is white light?

Answer 11

A mixture of all the colors of the rainbow

Question 12

What happens when all the colors are absorbed?

Answer 12

It changes into heat

Question 13

Why do we see white objects?

Answer 13

Because the colors are reflecting

Question 14

Why do we see black objects?

Answer 14

Because all the colors are being absorbed

Question 15

What are the primary colors?

Answer 15

Red, yellow, and blue

Question 16

Why is the sky blue?

Answer 16

Because sunlight light is scattered by the air

Question 17

What can a prism do?

Answer 17

It can break up light into all the colors of the rainbow

Question 18

What is it called when light strikes and object and passes though it without scattering?

Answer 18

Transparent

Question 19

What is it called when an object transmits light but the image aren’t clear?

Answer 19

Translucent

Question 20

What are some materials that are transparent?

Answer 20

Clear glass, pure water, and air

Question 21

What are some materials that are translucent?

Answer 21

Very dirty glass and tissue paper

Question 22

Ocean waves

Answer 22

A type of mechanical wave were energy moves through a medium,

Question 23

Longitude wave

Answer 23

Energy compresses and expands the space between particles

Question 24

Sound waves

Answer 24

The particles of the medium carrying the sound move back and forth parallel to the direction the energy travels.

Question 25

What is a method of measuring frequency?

Answer 25

By counting the number of peaks or compressions that pass a certain point over given time.

Question 26

Where are transverse wave found?

Answer 26

The wavelength is commonly found by measuring the distance between two successive crests of a wave.

Question 27

What is interaction interference?

Answer 27

When two or more waves that travel in the same medium can interact with each other.

Question 28

What happens when interaction interference happens?

Answer 28

When it occurs, the displacement of a point is equal to the sum of the displacements of the different waves at that point.

Question 29

What type of wave is light?

Answer 29

Electromagnetic wave, and electromagnetic waves don’t need matter to travel.

Question 30

What is a concave mirror?

Answer 30

It is shaped like the round end of a spoon or the inside of bowl, reflected light converges to a point in front of the mirror.

Question 31

What is another name for concave mirrors and why?

Answer 31

Converging mirrors because they tend to reflect the light that falls on them toward a focal point.

Question 32

What is a convex mirror?

Answer 32

It is shaped like the Bottom of a spoon or bowl. Reflected light diverges away from the mirror.

Question 33

What is another name for convex mirrors and why?

Answer 33

Bankers’ eyes because they would be used to keep employees from stealing.

Question 34

Why does light travel in straight lines?

Answer 34

Because the shining of a powerful light source through a thin slit produces a straight narrow beam.

Question 35

What is a lens?

Answer 35

A curved pice of a transparent material, like glass and plastic.

Question 36

What can a lens do?

Answer 36

A lens refracts light rays, or bends them, in a way that forms an image.

Question 37

What is refraction responsible for?

Answer 37

It is responsible for the colors of soap bubbles and when we see the spectrum of colors in a rainbow, and for some optical illusions.

Question 38

Why are rainbows created?

Answer 38

They are created because raindrops refract each different wavelength in white light from the sun at a different angle, between 40 and 50 degrees, depending on the color.

Question 39

How does an object get hot when it absorbs all the light?

Answer 39

It happens when light waves interact with electrons in the atoms of a material.

Question 40

Are all waves mechanical?

Answer 40

No, for example, outer space doesn’t.t have much matter in it, but light waves still travel from the sun to Earth.