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Unit 06 25-26

Space

TermDefinition
Gravity force by which a planet or other body draws objects toward its center
Habitable zone the distance from a star at which liquid water could exist on orbiting planets' surfaces
Kuiper belt in a region of space located past Neptune
Meteor a small piece of matter from outer space that becomes a streak of light when it falls through Earth’s atmosphere and burns up
Oort cloud most distant region of our solar system
Revolution one complete trip of a planet around the Sun
Rotation the spinning of a planet or moon on its axis
Atmosphere made of the layers of gases surrounding a planet or other celestial body.
Debris defunct human-made objects in space – principally in Earth orbit – which no longer serve a useful function.
Earth a rocky, terrestrial planet. It has a solid and active surface with mountains, valleys, canyons, plains and so much more. 70% of the surface is covered in water.
Gravitational forces the force by which a planet or other body draws objects toward its center.
Jovian planets Jupiter, Saturn, Uranus, and Neptune. They orbit far from the sun. These planets have no solid surfaces and are essentially large balls of gas composed primarily of hydrogen and helium.
Moon an object that orbits a planet or another celestial body that is not a star.
Orbit a regular, repeating path that one object in space takes around another one.
Planet a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighborhood around its orbit.
Proximity the state or condition of being near
Solar system collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Sun the star around which the earth orbits.
Terrestrial planets made up of rocks or metals with a hard surface.
Created by: LMS 7 Sci
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