questions

Question 1

3 waves that are a part of the electromagnetic spectrum

Answer 1

1. UV-rays
2. Infrared waves
3. Radio waves

Question 2

Which color of light has the longest wavelength?

Answer 2

Red

Question 3

Is it true or false that when the frequency of wave increases, the wavelength increases

Answer 3

false

Question 4

Which type of luminescence is produced by friction?

Answer 4

Triboluminescence

Question 5

True or false: light can travel through a vacuum

Answer 5

True

Question 6

What is it called when light rays reflect off of a smooth surface?

Answer 6

Regular reflection

Question 7

What is the highest point on a wave called?

Answer 7

Crest

Question 8

What is an umbra?

Answer 8

darkest part of a shadow where all light from a source is completely blocked by an opaque object.

Question 9

What is penumbra?

Answer 9

Partially shaded outer region of a shadow where light from a source is only partially blocked by an opaque object, resulting in partial illumination

Question 10

what is diffuse reflection?

Answer 10

the scattering of light in various directions upon striking a rough or irregular surface, resulting in a non-specular reflection pattern.

Question 11

Do opaque objects transmit light?

Answer 11

No, they only absorb and reflect light

Question 12

Which material transmit some light but not enough to see through the material clearly?

Answer 12

translucent

Question 13

Which material transmit light freely and absorb/reflect very little light?

Answer 13

Transparent

Question 14

Wavelength

Answer 14

distance form one place in a wave to the next similar place on the wave.

Question 15

Amplitude

Answer 15

the wave height from eh rest position of the wave to the crest / wave depth from the rest position to the trough (lowest point); intensity of wave depends of amplitude

Question 16

Frequency

Answer 16

rate of repetition of a wave

Question 17

where is the vertex

Answer 17

the point where the principal axis intersects with the surface of a lens or mirror

Question 18

Transmission?

Answer 18

Light passing through a material

Question 19

telescopes and their relation to mirrors / lenses

Question 20

Refraction?

Answer 20

The bending of light (water)

Question 21

Reflection?

Answer 21

Light bouncing off of a material

Question 22

How is an image produced in the mirror?

Answer 22

Through the use of light that shows the reflection

Question 23

2 laws of reflection (plane mirrors)

Answer 23

1. Angle of incidence = angle of reflection
2. The incident ray, reflected ray & the normal are in the same plane (same side)

Question 24

If you are under water looking up at a person sitting with his legs in the swimming pool, and you are at the CRITICAL ANGLE, what do you see?

Answer 24

you see the person’s legs due to total internal reflection at the water-air interface.