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16 Cards in this Set
- Front
- Back
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what is a satellite
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an object that moves around another object in space; the moon is a satellite of earth
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what is an orbit
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a path that an object such as such as a planet makes as it revolves around a second object
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what is a phase
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one of the different shapes the moon seems to have as it orbits the earth
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what is revolution
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the movement in any object in an orbit,such as earth moving around the earth
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what is rotation
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the motion of a planet or other objectas it turns on its axis
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what is axis
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an imaginary line that runs through both poles of a planet
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what is a solar system
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a group of objects in space that move around a central star
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what is a star
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a huge, burning sphere of gases ;for example the sun
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what is a planet
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a large object that moves around a star
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what is an asteroid
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a small rocky object that moves around that sun
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what is a comet
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a small mass of dust and ice that orbits the sun in a long oval-shaped path
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what is a inner planet
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the palnets closests to the sun; mercery,venus,earth,mars
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what is a outer planet
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the planets farthest from the sun;jupiter,saturn,uranus, neptune,pluto
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what is a gas giant
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palnets which are large spheres made up mostly of gases
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what is a telescope
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a device people use to observe distante objects with their eyes
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what are space probes
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an uncrewed space vehicle that carries camreras;insrements and other research tools
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