5th Grade--Lesson 3

This is a long list.  Therefore, the test will be next Friday, January 17th.

1.      Asteroid—a large piece of space rock with an irregular shape.

2.      Comet—a space object made up of dust and ice.

3.      Dwarf planet—a round space object that is smaller than a planet, is not a moon, and revolves around a star along with other similar space objects.

4.      Elliptical—like a flattened circle or oval.

5.      Gravity—a force of attraction between two objects.

6.      Inner planet—one of four small, rocky planets closest to the sun (Mercury, Venus, Earth, and Mars)

7.      Meteor—a streak of light produced by a meteoroid burning up in its path toward Earth.

8.      Meteorite—A meteoroid or piece of a meteoroid that lands on Earth.

9.      Meteoroid—A rocky body with an irregular shape that is smaller than an asteroid.

10.  Moon—a natural object that moves in a path around a planet.

11.  Orbit—a path around a star or planet.

12.  Outer planet—one of the four giant gas planets farthest from the sun (Jupiter, Saturn, Uranus, and Neptune)

13.  Planet—a large, round object that revolves around a star.

14.  Revolve—to move in a fixed path around another object.

15.  Solar system—the sun, Earth, all the other planets, and all the objects that travel around the sun.

16.  Star—a giant sphere of gases that produces light and heat.

 
17. Telescope—a tool that makes objects that are very far away appear much closer.