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Sun and Stars
4th grade
| Term | Definition |
|---|---|
| Asteroid | chunks of rock and metal floating in space |
| comet | an icy ball of rocks, dust, and ice floating in space |
| constellation | an imaginary pattern of a group of stars |
| galaxy | a group of billions and billions of stars |
| meteor | pieces of asteroid that enter earth's atmosphere |
| nebula | a large cloud of dust and gas where stars are formed |
| nova | a new star |
| orbit | the oval-shaped path of a planet around its star |
| radiant energy | energy that can travel through space (heat and light) |
| solar system | all of the planets and objects that move around a star |
| star | a huge ball of hot, glowing gases that gives off heat and light |
| supernova | an exploding star |
| telescope | a tool that makes faraway objects look larger,closer, and brighter |