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Gr 6 Science Midterm
Grade 6 Science Midterm Study Guide - Define
| Term | Definition |
|---|---|
| astronomical unit | the distance between the earth and the sun |
| ellipse | asymmetrically shaved oval |
| revolution | a single orbit around the sun or another heavenly body |
| gravity | the force of attraction that exists between any two objects |
| foci | two special points inside an ellipse |
| solar system | the sun and all the heavenly bodies that orbit it |
| meteor | a meteoroid that enters the earth's atmosphere |
| planets | wanderers |
| a period | the amount of time it takes a comet to complete an orbit |
| solar year | the length of the earth's revolution around the sun |
| Kuiper belt | a belt of small, icy objects resembling comet nuclei that orbit farther from the sun than the planet Neptune |
| new moon | the beginning of the new month when the sunlit side of the moon is turned away from Earth and completely hidden from view |
| full moon | the phase of the moon when we see the entire sunlit side |
| comet | an asteroid-sized object that develops a huge, bright tail when it comes near the sun; means "long-haired star" |
| rotation | the spinning of the Earth or other object |