Light Energy & Behavors Of Light

Question 1

3 Forms of energy

Answer 1

Chemical
Light
Nuclear

Question 2

Definition of energy

Answer 2

Energy is the ability to make something move

Question 3

What does light travel in

Answer 3

Straight lines
Waves

Question 4

Types of materials light encounters

Answer 4

Opaque
Translucent
Transparent

Question 5

What happens when it light encounters an opaque material

Answer 5

It cant travel through
It reflects or gets absorbed

Question 6

What happens when it light encounters a transparent material

Answer 6

Let the light wave pass through completely
Transmission

Question 7

What happens when it light encounters a translucent material

Answer 7

Some light passes
Light direction changes (refraction)

Question 8

What is the law of reflection

Answer 8

The angle of incidence is always equal to the angle of reflection

Question 9

What is reflection

Answer 9

When light bounces of an material ( usually opaque )

Question 10

What is refraction

Answer 10

The bending of light when it passes through a material (usually translucent)
Refers to the bending of light when it travels from one medium (material) to another. These mediums must have different densities.

Question 11

What is absorption

Answer 11

Absorption is when the object (opaque) soaks up some of the light waves
The absorbed light cannot be seen by the human eye
changing the light energy into heat energy.

Question 12

What is transmission

Answer 12

Light transmission is when light travels through a material that is transparent (completely clear) or translucent (partially clear)

Question 13

How does reflection occur

Answer 13

When light encounters an opaque material

Question 14

How does refraction occur

Answer 14

When light encounters an translucent material

Question 15

When does transmission occur

Answer 15

When light encounters a transparent material (Very rarely but sometime a translucent material)

Question 16

When does absorption occur

Answer 16

When light encounters an opaque object

Question 17

Types of lenses

Answer 17

Concave
Convex

Question 18

What happens when light passes through a prism

Answer 18

It refracts & produces a light spectrum
Red travels the farthest

Question 19

What are the colors of the spectrum

Answer 19

R red
O orange
Y yellow
G green
B blue
I indigo
V violet

Question 20

What is nature of light

Answer 20

1. Sometimes it behaves like a particle (called a photon), which explains how light travels in straight lines.
2. Sometimes it behaves like a wave, which explains how light bends

Question 21

what is a light particle called

Answer 21

Photons

Question 22

What is a light wave called

Answer 22

Electromagnetic wave

Question 23

Form of energy textbook

Answer 23

Laser lights
Radio waves
Infrared light

Question 24

Transmission in the eye

Answer 24

light passes through the cornea

Question 25

Absorption in the eye

Answer 25

Lens absorbs light

Question 26

Refraction in the eye

Answer 26

Light refracts at cornea

Question 27

How do we see color

Answer 27

Light travels into the eye to the retina located on the back of the eye. The retina is covered with millions of light sensitive cells called rods and cones. When these cells detect light, they send signals to the brain. Cone cells help detect colo

Question 28

Light waves can travel through

Answer 28

Empty space

Question 29

How are images formed on the retinues (how do they look)

Answer 29

Inverted

Question 30

Why do we not see images as inverted

Answer 30

Our brain inverts the image again (back to how it is originally)

Question 31

What speed does light travel in

Answer 31

300 000km about