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How Planets Interact
FOSS Investigation 2.4 Vocabulary
Term | Definition |
---|---|
solar system | the Sun together with the planets and other objects that orbit it |
terrestrial planet | one of the four small rocky planets closest to the Sun. These are Mercury, Venus, Earth, and Mars |
asteroid | a small, rocky object that orbits the Sun |
asteroid belt | the group of asteroids found between the rocky planets and the gas giants |
gas giant planet | one of the four planets that are made of gas including Jupiter, Saturn, Uranus, and Neptune |
dwarf planet | a round object that orbits the Sun but does not orbit a planet |
Kuiper Belt | a huge region beyond the gas giant planets, made up of different-sized icy chunks of matter |
comet | a mass of ice, rock, and gas orbiting the Sun in a large oval path |
force | a push or a pull that acts on an object |
gravity | the force of attraction between two objects |