Sun, Earth, and MoonPresented by

Dr. Marjorie Anne Wallace

Elementary Science Resource Teacher

I bet you know the answers!

• What causes day & night?

• Which one is bigger the earth or the moon?

• Where does the moon get its light from?

• What percent of the earth is always lit by the sun?

• How many stars are in our solar system?

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

The Earth: • -is the third planet from the Sun,• -is an oblated sphere,• -rotates on its imaginary axis counterclockwise every 24 hours or 1 day,• -appears blue in space because it is 70% water, -revolves around the sun every 365 days or 1 year.

Which one is the smallest?Which one is the largest?

Answer: Sun, Earth, then Moon

• The sun is the largest

• Next in size is the Earth.

• The moon is smaller than the Earth.

2000 SOL #4.7

• Which of these is the biggest?

• F The moon

• G The Earth

• H The sun

• J Jupiter

Answer: H The sun is the largest!

The sun is also the largest heavenly body in our solar

system.

2001 SOL 3.7 & 4.7

• The moon revolves around -

• F itself

• G the Earth

• H the sun

• J the solar system

• The moon revolves or orbits the Earth once every 28/29 days.

• We see the same side of the moon because the moon rotates and revolves at the same speed.

• 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 in one place on its imaginary axis.

• Rotation of the earth on its axis causes day & night. (answer A).

How long does it take for Earth to make one complete rotation?• F 365 days

• G 24 hours

• H 28 days

• J A month

It takes 24 hours for the Earth to make one complete

rotation

When the moon is seen from the Earth as a whole circle, it is

called a-

• A Crescent moon

• B Full moon

• C Half moon

• D New moon

When the moon is seen from the Earth as a whole circle, it is

called aFULL MOON.

Which of these is the next phase of the moon?

• New Moon --- Waxing Crescent --- ?

• F Full Moon

• G Waning Crescent

• H First Quarter

• J Waxing Gibbous

The next major phase of the moon would be…

• First quarter.

• Just think about it…the• New moon (can only get bigger.

Or = Waxing)..• Then comes Waxing crescent …

next is• First quarter…then • Waxing Gibbous and then a • Full Moon.

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 days

The revolution of the Earth around the sun

• Takes 365 days

• or one year.

• NOTE:

• Due to the tilt of the Earth’s axis during revolution, the Earth experiences seasons.

What are the phases of the moon caused by?

A. It’s position to the Earth and the sun.

B. The season

C. It’s revolution.

D. It’s rotation.