Space Word Scramble
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| Term | Definition |
| gravity | the pulling force between two objects |
| rotation | the spinning motion of an objects on its axis |
| revolution | the movement of an object around another object |
| solar system | the sun, planets/dwarf planets and their moons, asteroids, comets, and meteors |
| galaxy | group of billions of stars and their planets, gas, dust that extends over many thousands of light-years that is held together by gravity. |
| Milky Way | the galaxy that contains our solar system |
| universe | all the galaxies, matter, and energy |
| sun | average size star, no solid surface, made of hydrogen and helium gases |
| nuclear fusion | the process by which hydrogen atoms join together to form helium. |
| prominences | loops of gases on the sun that link different sunspots |
| axis | the imaginary lint that runs through the north and south poles |
| spring tides | when the sun and moon are aligned, causing strong gravitational pull and very high and very low tides |
| neap tides | when the sun and moon are not aligned, the gravitational forces cancel each other out, and the tides are neither very high or very low |
| comet | a ball of ice and dust whose orbit around the sun is a long, narrow ellipse |
| asteroids | rocky objects that revolve around the sun, but are too small to be considered planets |
| meteroids | chunks of rock or dust in space |
| meteor | a meteroid that is burning up in the Earth's mesosphere |
| meteororites | meteoroids that pass through the atmosphere and hit Earth's surface |
| new moon | sun lights the moon facing away from Earth. The side of the moon facing Earth is dark |
| waxing crescent | the moon appears as a sliver or crescent of light |
| first quarter | half the lighted side of the moon |
| waxing gibbous | the lighted side of the moon with more than half of it lighted |
| full moon | the whole moon is lit |
| waning gibbous | the fraction of the lighted side of the moon decreases |
| last quarter | half of the moon is lit |
| waning crescent | there is less and less of the lighted side of the moon visible and then it appears again as a crescent |
Created by:
Susan_Johnson
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