Sun and Earth

Presented by

Dr. Marjorie Anne Wallace

Elementary Science Resource Teacher

I bet you know the answers!

• What causes day & night?

• How many days does it take for the Earth to revolve around the sun?

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.

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

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.

Which of these is caused by the turning of the Earth?

• F Summer and winter

• G Stars

• H Apparent Motion

• J Moon phases

The turning of the Earth causes

•Apparent Motion

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

The revolution of the Earth around the sun

• Takes 365 ¼ days

• or one year.

• Earth experiences seasons1) Due to the tilt of the Earth’s axis 2) and the Earth revolution around the Sun.

winter here

summer here

summer here

winter here

spring here

autumn here

autumn here

spring here

In the northern hemisphere:

In the southern hemisphere: