Solar System

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Terms in this set (...)

Planet
Round objects in space that are satellites of the Sun.
Solar System
The Sun and all the objects in orbit around it.
Gravity
A force of attraction between all objects.
Telescope
An instrument that makes faraway objects seem closer.
Comet
A chunk of ice, rock, and dust that orbits the Sun.
Asteroid
Large chunks of rock or metal in space.
Meteor
A piece of rock, ice, or metal that burns up in Earth's atmosphere, causing a streak of light to appear in the sky.
Meteorite
A meteor that hits Earth's surface.
Crater
A hollow area or pit in the ground.
Phases
The apparent shapes of the Moon in the sky.
Lunar Eclipse
A blocking of the Moon's light when the Moon passes into Earth's shadow; happens when Earth is directly between the Sun and the Moon.
Solar Eclipse
a blocking of the Sun's light that happens when Earth passes through the Moon's shadow; at that time the Moon is between Earth and the Sun.
Rotation
The act of spinning around an axis. As Earth moves around the Sun,it also spins.
Axis
A real or imaginary line that a spinning object turns around.
Orbit
The path an object takes as it travelsaround another object.
Revolution
When one object travels around another. Earth revolves around the Sun.
Ellipse
Earth's orbit is shaped like a flattened circle or ellipse.
Apparent Motion
The way something appears, or seems, to move.