1. Planets and Other Objects in Space
Lesson How Do Earth and Its Moon Move?

2. 1. Axis- The imaginary line that Earth spins around as it rotates.
2. Orbit- The path of one object in space around another object.
3. Telescope- A device people use to observe distant objects with their eyes.
4. Moon- Any natural body that revolves around a planet.
5. Phases- The different shapes that Earth’s moon seems to have.
6. What are the two ways Earth moves?
Rotates, or spins, on its axis and orbits, or revolves around, the sun.
7. Earth’s orbit around the sun is almost a perfect circle.
8. The summer solstice, about June 21st in the Northern Hemisphere has the most hours of daylight.
9. The winter solstice, about December 21st, is the day that has the most hours of darkness.

3. 10. On the autumn equinox, about September 21, and the spring equinox, about March 21, the hours of daylight and darkness are the same.
11. When the Northern Hemisphere begins to tilt towards the sun, this causes spring.
12. Refracting telescope- uses a curved piece of glass, called a lens, to bend light. It also uses a mirror to reflect light. Makes distant objects seem larger.
13. Which type of telescope was invented first?
Refracting telescope
14. When was it first used to see objects in space?
1609

4. 15. What does the moon’s surface look like?
The moon’s surface is rocky, dusty, and full of craters. It has mountains and valleys, smooth areas and hilly ones. There is no liquid water.
16. Why does the moon have more craters than Earth?
The moon has very little atmosphere, so its not protected from rocks and other objects that may crash into it.
17. When the moon is waning, are we seeing more and more of it, or less and less of it?
Less and less of it.
18. What phase of the moon happens after we see less and less of the moon at night?
The new moon
19. When the moon is visible at night, why can we see it?
Light from the sun reflects off the moon.
Have students draw and label the phases of the moon in their notebook. Then show up close in science video.