Chapter 4

Question 1

What does earth spin on?

Answer 1

Earth spins on its axis

Question 2

Why do we have daytime and nighttime?

Answer 2

Because the earth rotates on its axis every 24 hours.

Question 3

how long does it take for the earth to complete one full rotation?

Answer 3

24 hours

Question 4

How long does it take the earth to orbit the sun?

Answer 4

365 1/4 days

Question 5

What divides the earth into a Southern and Northern hemisphere?

Answer 5

The equator.

Question 6

There are four _____ in a year.

Answer 6

Seasons

Question 7

What do we call the different shapes of the moon?

Answer 7

Moon phases

Question 8

What causes a lunar eclipse?

Answer 8

The shadow of the earth on the moon

Question 9

How long does a lunar cycle last?

Answer 9

4 weeks

Question 10

what time is the sun highest in the sky?

Answer 10

High noon or 12:00

Question 11

Describe the path the sun takes across the sky

Answer 11

The sun appears to rise in the east and set in the west.

Question 12

How are the seasons different in June in the Northern and Southern Hemispheres?

Answer 12

In June the Northern Hemisphere is tilted toward the sun and its summer. In June the Southern Hemisphere is tilted away from the sun and its Winter.

Question 13

About how many lunar cycles occur in 1 year?

Answer 13

13…1 every 28 days. 28 x 13 =365

Question 14

What do we call the phase of the moon when the moon’s lit side faces away from earth?

Answer 14

A new moon

Question 15

How does the moon get its light?

Answer 15

From the sun

Question 16

Why is it warm all through the year near the equator?

Answer 16

Because the equator is closest to the sun

Question 17

What time of day are the shadows the shortest? Explain?

Answer 17

Shadows are shortest at 12noon because the sun is directly overhead

Question 18

Why does the position of the sun seem to change?

Answer 18

The position of the sun seems to change Daily as the earth rotates on it’s axis creating day and night. Seasonally the position of the sun seems to change with the seasons depending on earths position in its orbit around the sun

Question 19

If earth didn’t tilt on its axis, would we have the same kind of seasons?

Answer 19

No. The position of the earth in relation to the sun would be more constant creating milder seasons.

Question 20

Do we see both sides of the moon from earth?

Answer 20

No, we only see one side of the moon.

Question 21

If it is summer in South America, is it summer in North America too?

Answer 21

No because North America is in the Northern Hemisphere and South America is primarily in the Southern Hemisphere.

Question 22

What is different between a full moon and a new moon?

Answer 22

A full moon is when the moon is brightest and appears fully lit. We cannot see a new moon.

Question 23

Do the North and South poles receive the same amount of direct sunlight every day of the year?

Answer 23

No, the sunlight we receive is different depending on the time of year along with Earth’s position in relation to the sun.

Question 24

Which area of Earth most likely has the least change in summer and winter temperatures? Give reasons for your answer.

Answer 24

The region of earth around the equator is the warmest on average and has the least change in temperature as seasons change. This is because the equator is always (more or less) Tilted toward the sun.