1. Unit: Space Topic: Seasons Page: #
I CAN… Explain how the seasons are the result of the Earth’s tilt as it rotates on its axis in its orbit around the Sun.

2. Focus ?
Why is it Winter in the Northern hemisphere when it is Summer in the Southern hemisphere?

3. Explain
As earth revolves around the sun, the tilted axis causes the angle of sunlight to change.
As the angle of sunlight changes, the temperatures change!

4. Explain
When the sunlight strikes the Northern Hemisphere directly, the days are longer and hotter (summer).
While the sunlight is striking the Northern Hemisphere directly, it is striking the Southern Hemisphere at an angle, causing the days to be shorter and colder (winter).

5. When the Earth is on the other side of the sun, the seasons are reversed.
The Southern Hemisphere begins winter when the Northern Hemisphere starts summer. The seasons north and south of the equator are always opposite each other.

6. During part of the year, the North Pole points away from the sun
During part of the year, the North Pole points away from the sun. This season is _.
winter_____

7. During part of the year the North Pole tilts towards the sun
During part of the year the North Pole tilts towards the sun. This season is
________.
summer

8. Solstices
At two points throughout the year, the tilt of the Earth reaches a max angle compared to the Sun- June 21st and December 21st.
The rays of the Sun shine directly on the Tropics.

9. Equinoxes
At two points during the year the tilt of the axis causes the Earth to be straight relative to the Sun- March 20th and September 22nd
Sun rays sine directly on the equator.

11. Practice LEAP questions- GP

12. Where does the Northern Hemisphere experience Summer?

13. LEAP
What happens when the area in which you live tilts away from the sun?
It’s summer in your area
It’s spring in your area
It’s fall in your area
It’s winter in your area

14. LEAP What causes summer days to be hotter than winter days?
The hemisphere experiencing summer is tilted more directly toward the sun.
The entire planet is closer to the sun during summer.
The sun radiates more energy during summer.
The earth spins slower on its axis during summer.

15. If you live in the Northern Hemisphere, on which day of the year will your hometown receive the most daylight?
September 21
December 21
March 21
June 21

16. What causes the seasons to change?
The Earth’s distance from the sun
The warming and cooling of Earth’s core
The Earth’s tilt in relation to the sun
The Earth’s rotation on its axis

17. What season at D in the Northern Hemisphere?

18. How are winters in the Northern Hemisphere different from winters in the Southern Hemisphere?
A. Winter days are short in the Northern Hemisphere and long in the South.
B. Northern Hemisphere winters are cold; Southern winters are hot.
C. In the Northern Hemisphere winter lasts from December to March; in the South, it lasts from June to September.
D. In the Northern Hemisphere, winter lasts from June to September, in the South it lasts from December to March.

19. Why does the area around the equator stay the same temperature year-round?
It remains the same distance from the sun year-round
It receives the same amount of direct sunlight year-round
Its days are more than 18 hours long year-round
The equator rotates slower than the poles

20. Words to Use and Not Use!
Recommended words: Tilt towards, tilt away from, angle, hemisphere
Not allowed: Closer, Farther, distance, side (or half) of the earth