Space Vocabulary

Astronomy Vocabulary


1.  asteroid-small rocky object that revolves around the sun in an area between the inner and outer planets.

2.  convection zone-part of the sun in which energy is transferred by flowing gases.

3.  equinox-time of the year when the sun’s direct rays strike the equator.

4.  gravity-universal force that attracts all objects that have mass toward one another.

5.  lithosphere-Earth’s rigid outer layer.

6.  maria-flat plains on the Moon’s surface formed from lava flows.

7.  orbit-path that an object takes as it travels around another object.

8.  solar eclipse-when Earth moves into the Moon’s shadow.

9.  solar system-a star and the planets, moons, and other objects that revolve around it.

10. solstice-time of the year when the sun’s direct rays strike Earth farthest north or South of the equator.

11. star-huge sphere of glowing gases that gives off heat and light.

12. tide-the regular rise and fall of the ocean’s surface.

13. Astronomers- scientists that study space.

14. Gravity-is the universal force that attracts all objects.

15. Galaxy-is a giant collection of gas, dust, and billions of stars.

16. Satellites-are objects in space that orbit other larger objects.

17. Meteorites-are meteoroids that reach a planet's surface.

18. Hydrosphere-is all of Earth's water.

19. Meteoroids-space rocks.

20. Universe-is all of space, including all the energy and matter in it.

21. Comet - chunks of ice, rock and frozen gas the orbit the Sun.

Last modified: Thursday, December 6, 2012, 9:54 AM