Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
lessons 1-6
| Term | Definition |
|---|---|
| satellite | an object that orbits a planet |
| planet | an object that orbits a star, is large enough to be rounded by its own gravity, and has cleared the area of its orbit |
| meteor | a streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere |
| comet | a loose connection of ice and dust that orbits the sun, typically in a long, narrow orbit |
| star | a ball of hot gas, primarily hydrogen and helium, that undergoes nuclear helium |
| constellation | a pattern or grouping of stars that people imagine to represent a figure or object |
| axis | a imaginary line that passes through a planets center and its north and south poles, about which planet rotates |
| rotation | the spinning motion of a planet on its axis |
| revolution | the movement of an object around another object |
| orbit | the path of an object as it resolves around another object in space |
| calendar | a system of organizing time that defines the beginning, length, and divisions of a year |
| solstice | either of the two days of the year on which the sun reaches its greatest distance north or south of the equator |
| equinox | either of the two days of the year on which neither hemisphere is tilted toward or away from the sun |
| force | a push or pull extended on an object |
| gravity | the attractive force between objects; the force that moves objects downhill |
| law of universal gravitation | the scientific law that states that every object in the universe attracts every other object |
| mass | the amount of matter in an object |
| weight | a measure of the force of gravity on an object |
| inertia | the tendency of an object to resist a change in motion |
| newtons first law of motion | the scientific law that states an object at rest will stay and rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force |
| phase | one of the different apparent shapes of the moon as seen from earth |
| eclipse | the partial or total blocking of one object in space by another |
| solar eclipse | the blocking of sunlight to earth that occurs when the moon is directly between the sun and earth |
| umbra | the darkest part of a shadow |
| penumbra | the part of the shadow surrounding the darkest part |
| lunar eclipse | the blocking of the sunlight to the moon that occurs when the earth is directly between the sun and the moon |
| tide | the periodic rise and fall of the level of water in the ocean |
| spring tide | the tide with the greatest difference between consecutive low and high tides |
| neap tide | the tide with the least difference between consecutive low and high tides |
| maria | dark,flat surfaces on the moons surface formed from huge ancient lava flows |
| crater | a round large pit caused by the impact of a meteoroid |
| meteoroid | a chunk of rock or dust in space, generally smaller than a astroid |
Created by:
user-1975217