1. Earth and Space Science
Earth and Moon

2. atmosphere
The Moon has no _______________. Because ther is no atmosphere, there are no winds and there is no weather on the Moon.

3. craters 2. Rocks striking the Moon over billions of years have formed
many ______________.

4. Sun
3. The Moon shines with light that comes from the _________ and reflects off the Moon’s surface.

5. phase
4. The appearance and shape of the Moon as you see it from Earth is called a ____________________.

6. 29
5. The time from one phase of the Moon until the next time the Moon reaches the same phase is ________ days or one month.

7. eclipse
6. An _______________ occurs when one object moves in front of another object in space.

8. solar eclipse
7. A _____________ _____________occurs when the Moon passes directly between Earth and the Sun. When this happens, the Moon casts a shadow on Earth. A solar eclipse can only occur during a new moon phase

9. lunar eclipse
8. A _____________ ____________ occurs when the Moon moves into Earth’s shadow and is no longer reached by direct sunlight. A lunar eclipse can only occur during a full moon phase.

10. umbra, penumbra
9. During an eclipse, the area where the Sun is completely blocked is the ________________, and the area where the light is not completely blocked out is the _______________.

11. tides
10. The pull of gravity between Earth and the Moon and between Earth and the Sun causes a bulge in the surface of Earth. This is not visible on parts of Earth covered in rock. This pull can be seen in oceans and other large bodies of water. ____________ are caused by the rise and the fall of the ocean’s surface.

12. Moon
11. The pull of gravity causes ocean water to bulge on the side of Earth facing the ______________, and a matching bulge on the side of the Earth opposite the Moon.

13. high tides, low tides
12. There are ___________ ____________at the bulges of water and ______________ ____________ halfway between the bulges. Most oceans have two high tides and two low tides every day.