The document discusses the rotation and revolution of the Earth. It begins by asking questions about what causes day and night and how long it takes Earth to revolve around the sun. It then provides details that the Earth rotates on its axis every 24 hours, causing days, and revolves around the sun every 365.25 days, causing years. Rotation is defined as the turning of Earth on its axis, which causes both day and night and apparent motion of stars in the sky. The revolution of Earth around the sun takes one year or 365.25 days to complete.

1. Sun and Earth
Presented by
Dr. Marjorie Anne Wallace
Elementary Science Resource Teacher

2. I bet you know the answers!
• What causes day & night?
• How many days does it take for the Earth to revolve
around the sun?

3. The Earth:
• -is the third planet from the Sun
• -is a sphere,
• -rotates on its imaginary
axis every
24 hours or 1 day,
• -revolves around the sun every
365 ¼ days or 1 year.

6. Earth Science Question: rotation
• What is rotation? (define)
• The rotation of the Earth on its axis causes-
• A days
• B months
• C seasons
• D years

7. Rotation causes day & night.
• Rotation is the turning
or spinning of the
Earth on its imaginary
axis.
• Rotation of the earth
on its axis causes
1) day & night.
2) Apparent motion.

9. Which of these is caused by the
turning of the Earth?
• F Summer and winter
• G Stars
• H Apparent Motion
• J Moon phases

10. The turning of the Earth causes
•Apparent
Motion

14. The revolution of the Earth
around the Sun takes-
• A a day & night or 12 hours
• B a week or 7 days
• C a month or 29-31 days
• D a year or 365 ¼ days

15. The revolution of the Earth
around the sun
• Takes 365 ¼ days
• or one year.
• Earth experiences
seasons
1) Due to the tilt of the
Earth’s axis
2) and the Earth
revolution around the
Sun.

16. winter here
summer here
summer here
winter here
spring here
autumn here
autumn here
spring here
In the northern
hemisphere:
In the southern
hemisphere: