The Solar System
What is the solar system?
The Sun and everything in orbit around it
What is the Earth?
A planet
In addition to the Sun, what does the Moon orbit?
Earth
What is on the surface of the Moon?
Dust, rocks, craters, mountains, hills
What is the Sun?
A star
Approximately what shape is the Earth?
A sphere
What two motions is the Moon always doing?
Rotation and revolution
What is not on the surface of the Moon?
Water, air, or any living thing
What is a star?
A ball of hot gas
What two motions is Earth always doing?
Rotation and revolution
How long does it take the Moon to orbit Earth?
Approximately one month
Why is it very hot during the day and very cold at night on the Moon?
It has no atmosphere.
Where in the solar system is the Sun?
in the center
What does Earth's rotation cause us to experience?
Day and night
Why can we see the Moon?
It reflects light from the Sun
How were the craters on the Moon Formed?
The impact of rocks hitting the surface.
Why does everything in the solar system orbit the Sun?
It is by far the largest thing in the solar system
What makes Earth different from other planets?
It is the only planet known to have life.
Why does the Moon appear to change shape?
We see the lighted half of the Moon from different angles.
Why don't we see many craters on Earth?
They are covered by water, soil, and plants.