Sun-Earth-Moon System

A ​ (a)   is an object that orbits a larger object in space, such as a planet or star.

When a satellite travels around another object, this is called a ​ (b)   .

Rotation is when a satellite ​ (c)   .

The Earth completes one revolution, or one orbit, ​ (d)   .

( 365 days, 6 hours, and 9 minutes )

The earth completes one rotation, or ​ (e)   every day.

( 23 hours 56 minutes )

• satellite
• revolution
• turns on its axis
• around the sun every year
• turn on its axis

Because the Earth revolves around the Sun every 365 days, 6 hours, and 9 minutes it is considered a

• Meteor

• Satellite

• Black hole

The earth_________ around the sun every 365 days a year, and _________ on its axis once a day.

• rotates, revolves

• revolves, rotates

The moon rotates or ​ (a)   once every 29.5 days.

The moon revolves ​ (b)   every 27.3 days.

It takes the ​ (c)   for the moon to rotate and revolve, so the same side of the moon always faces the Earth which means we are ​ (d)   .

• spins on its axis
• around the Earth
• same amount of time
• Tidally locked

This phenomenon by which a body has the same rotational period as its orbital period around a partner.

So, the Moon is _________ to the Earth because it rotates in exactly the same time as it takes to orbit the Earth

• Tidaly locked

• a meteor

• satellite

Because we are Tidally locked with the moon because its rotation and revolution take almost the same time, we always see:

• The dark side of the moon

• The bright side of the moon

• The same side of the moon

Both the Moon and the international space station have something in common. They are both objects that orbit the Earth and are therefore considered to be​ (a)  

• satellites

• meteoroids

• asteroids

• moons

The moon shines due to the ​ (a)   off of its surface.

This causes the ​ (b)   .

A ​ (c)   , the lighted side of the moon can't be seen from Earth.

A ​ (d)   , the entire lighted side of the moon can be seen.

• Sun reflecting
• phases of the moon
• New Moon
• full moon

The moon ​ (a)   is maxing, ​ (b)   is draining means that when the moon is waxing (​ (c)   ), it's like something is reaching its maximum, while when it's waning (​ (d)   ), it's like something is being drained or depleted

• waxing
• waning
• getting bigger
• getting smaller

NCHGF is a way to remember the phases of the moon = New, Crescent, half, Gibbous, Full

Put these phases of the moon in the correct order

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