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HMS5 Science Unit B
Hubbard Middle School 5th Grade Science Unit B Terms
| Term | Definition |
|---|---|
| constellation | A group of stars that form a fixed pattern is the night sky. |
| axis | The imaginary line on which an object rotates. |
| rotation | The spinning of an object on it's axis. |
| revolution | The movement of an object around another object or point. |
| star | A huge globe of gas that shines by it's own light. |
| planet | A large body in space that revolves around a star and dosen't give off it's own light. |
| refracting telescope | An instrument for viewing distant objects that uses 2 lenses to gather light and produce an image. |
| reflecting telescope | An instrument for viewing distant objects that uses a curved mirror at the back of it's tube to gather light and produce an image. |
| comet | A small object in space made of ice dust gas and rock that orbits a star and has a gaseous tail. |
| meteor | A piece of rock or metal thatenters earth's atmosphere. |
| geocentric model | A representation of the uuniverse where stars and planets revolve around earth. |
| heliocentric model | A representation where the earth revolves arond the sun. |