Book #3 and #4

Question 1

What does emit mean and two things that emits light.

Answer 1

Creating light or to give off its own light. Suns, stars

Question 2

What is the first layer of the atmosphere and one fact about it.

Answer 2

Troposphere-weather is formed here

Question 3

What is the second layer of the atmosphere and one fact about it.

Answer 3

Stratosphere-ozone layer

Question 4

What is the third layer of the atmosphere and one fact about it.

Answer 4

Mesosphere-coldest layer

Question 5

What is the fourth layer of the atmosphere and one fact about it.

Answer 5

Thermosphere-hottest layer

Question 6

What is the fifth layer of the atmosphere and one fact about it.

Answer 6

Ionosphere-northern lights are formed here

Question 7

What is the last layer of the atmosphere and one fact about it.

Answer 7

Exosphere-satellites orbit here

Question 8

What are three reasons why earth can support life?

Answer 8

Earth has:liquid water, breathable atmosphere and right distance from the sun (temperature)

Question 9

What does reflect mean and two things that reflect light.

Answer 9

Reflet means: something that bounces light. Our moon and meteors.

Question 10

Why is it harmful to look at the sun with the naked eye. What are two things to use to look at the sun safely.

Answer 10

Because the sun emits UV rays (ultraviolet) that will damage your eyes. Use a pinhole camera or a welders mask.

Question 11

What positions do the Earth, the moon and the sun have to be in for a partial or total solar eclipse to occur.

Answer 11

Earth—moon—sun

Question 12

Why does the sun appear to move across the sky each day?

Answer 12

Because earth is rotating on its axis.

Question 13

What causes night and day?

Answer 13

Because earth is rotating on its axis.

Question 14

What is the difference between direct and indirect rays from the sun? What causes the rays to become more or less direct?

Answer 14

Direct are stronger and head on and indirect is weaker and spread out. Because earth tilt on its axis.

Question 15

When does the spring equinox occur?

Answer 15

March 21st

Question 16

When does the fall equinox occur?

Answer 16

September 23rd

Question 17

When does the summer solstice occur?

Answer 17

June 21st

Question 18

When does the winter solstice occur?

Answer 18

December 21st

Question 19

What happens to the amount of daylight on each of these dates?

Answer 19

On march 21st days are getting longer and on june 21st days are getting shorter.

Question 20

What cases solstices and equinoxes.

Answer 20

Earth’s revolution around the sun.

Question 21

What are the two reasons that earth experiences four different seasons each year?

Answer 21

Because the never-changing tilt of earths axis and earths revolution around the sun

Question 22

When does the spring equinox occur?

Answer 22

March 21

Question 23

When does the fall equinox occur?

Answer 23

September 23

Question 24

When does the summer solstices occur?

Answer 24

June 21

Question 25

When does the winter solstices occur?

Answer 25

December 21

Question 26

What happens to the amount of daylight on each of these dates?

Answer 26

On March 21 days start to get longer and after June 21 days get shorter

Question 27

What causes solstice and equinoxes?

Answer 27

Earths revolution

Question 28

How do the seasons compare in the northern and southern hemispheres?

Answer 28

They are the opposite.