Electromagnetic Waves, Chapter 1.

Question 0

Define Infrared Rays

Answer 0

Infrared rays, also called heat rays. Feel energy as heat.

Example: Incubator (Chicken eggs)

Question 1

Name 7 electromagnetic waves

Answer 1

1 - Radio waves
2 - Microwaves 
3 - infraref waves
4 - Visible light
5 - Ultra violet rays
6 - X-rays
7 - Gamma rays

Question 2

Define Visible Light

Answer 2

Visible light appears white but it is a mixture of all colors.

Question 3

Define Ultra violet rays

Answer 3

Ultraviolet rays can damage. It damage your living cells. It can give you skin cancer, and vitamin D.

Question 4

Define X-rays

Answer 4

Don’t pass through bones.

Question 5

Cell phones.

Answer 5

Transmit and receive signals using high frequency microwaves.

Question 6

How do cell phones work?

Answer 6

Cellular system. Divides region into cells or sections, each section or cell has at least one tower.

Question 7

GPS

Answer 7

Global positioning system.
Uses satellites.
Used by militaru 1st.
Tells you an exact location on earth.

Question 8

Mirage

Answer 8

An image of a distant object caused by bending of light of refraction.

Question 9

Convex lens

Answer 9

Helps a person react.

Thicker in the center, thinner in the edges.

Question 10

Refraction

Answer 10

Bending of light rays.

Question 11

Ins

Answer 11

Colored ring around the pupil of the eye.

Question 12

Pupil

Answer 12

Changes size acording to light entering.

Question 13

Near sighted

Answer 13

Can see nearby objects crearly.

Question 14

Farsighted

Answer 14

Can see objects far away crearly.

Question 15

Microscope

Answer 15

Enlarges images of tint objects.

Question 16

Binocular

Answer 16

Are like a refracting telescope.

Question 17

Telescope

Answer 17

Enlarge distant objects.