Sun, Earth, and Moon

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?

• How many low and high tides on Earth every 24 hours?

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.

We breathe:

0

20

40

60

80

nitrogenoxygentrace

nitrogen 78

oxygen 21

trace 1

percen

• 78% nitrogen

• 21% oxygen

• 1% argon, neon, carbon dioxide, neon, & krypton

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

• Can you put these in size order?

• Place the following in order from largest to smallest.

• Moon• Sun• Earth

Answer: Sun, Earth, then moon

• The sun is the largest

• Next in size is the Earth.

• The moon is smaller than the Earth.

• Which of these is the biggest?

• The moon

• The Earth

• The sun

• Jupiter

Answer: The sun is the largest!

Our sun is the only star in our solar system. The sun is also the largest heavenly body in our solar system.

• The sun heats the Earth unevenly, making the poles cold and the tropics hot, because-

• the tropics face more directly

toward the sun

• the poles are covered with ice

which causes cold air

• seasons change

• weather changes

• The moon revolves around -

• itself

• the Earth

• the sun

• the solar system

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

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

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 in one place on its imaginary axis.

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

Earth Science Question:

• Which of these shows the location of a polar ice cap?

• Which of these shows the location of the equator?

Polar ice caps= A

Equator= C

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

• Summer and winter

• Stars

• Day and night

• Moon phases

The turning of the Earth causes

•Day & Night

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

called a-

• Crescent moon

Full moon

• Half moon

• 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 --- ?

• Full Moon

• Waning Crescent

• First Quarter

• 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.