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| Question | Answer |
|---|---|
| satellite | An object that orbits a planet |
| planet | An object that orbits a star, is large enough to have become rounded by its own gravity and has cleared the area of its orbits |
| meteor | A streak of light in the sky produced by the burning of a method in earth atmosphere. |
| comet | A loose collection of ice and dust that orbits In the sun typically ina long narrow orbit |
| star | A ball of hot glass primarily hydrogen and helium, that undergoes nuclear function. |
| constellation | A pattern or grouping of stars that people imagine to represent a figure or something |
| axis | An imaginary line that passes through a planets center and its north and south poles about which planets rotate |
| rotation | The spinning motion of a planet on its axis |
| revolution | The movement of an object around anyother object |
| orbit | The path of an object as it resolves around another object in space |
| calender | A system of orgnizing time that defines the beginning legneth and divisoin 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 year on which neither hemisphete is tilted toward or away from the sun. |
| force | A push or pull exerted on an object |
| gravity | The attractive force between objects the force that moves objects downhill. |
| law of universal gravitation | The sciencetific law that states 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 that an object at rest will stay at rest and an object in motion will stay at motion with a constant speed and direction unless acted on by a force. |
| phase | One of the diffrent 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 the earth. |
| umbra | The darkest part of a shadow. |
| penbrumbra | The part of a shadow surrounding the darkest part. |
| lunar eclipse | The blocking of sunlight to the moon and that occurs when 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 areas on the moons surface formed from huge ancient lava flows. |
| crater | A largerond pit caused by the impact of a meteoroid. |
| meteoroide | A chunk of rock or dust in space, generally smaller than an asteroid. |