click below
click below
Normal Size Small Size show me how
Moons
physical science moons chapter
| Term | Definition |
|---|---|
| planet | any of the nine primary bodies that orbit the sun; a similar body that orbits another star. |
| Dwarf Planet | is defined as an object that is orbiting the Sun, is nearly spherical, but has not cleared matter from its orbital zone and is not a satellite. |
| Small Solar System Bodies | All objects in the solar system that are not planets, dwarf planets, or moons. |
| (AU) | a measurement for distances based on the distance from earth to the sun |
| Terrestrial Planets | The name given to the four inner planets: Mercury, Venus, Earth, and Mars |
| Giant Planets | Jupiter, Saturn, Uranus, and Neptune |
| Asteroids | small, rocky bodies orbiting the Sun and lying mainly in a narrow belt between Mars and Jupiter. |
| Meteoroids | remnants of comets and asteroids in space |
| Meteor | A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere |
| Meteorite | stony or metallic object that is the remains of a meteoroid that has reached the earth's surface |
| Kepler's First Law | states that each planet moves in an orbit that has the shape of an ellipse, with the Sun located at one focus |
| Kepler's Second Law | states that an imaginary line between the Sun and a planet moves over equal areas of the ellipse during equal time intervals. |
| Kepler's Third Law | states that the square of the period of a planet's orbit is proportional to the cube of that planet's semi major axis. |
| solar system | the sun and all the planets and other bodies that travel around it. |
| satellite | a natural or artificial body that revolves around a planet. |