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Earth & Space
5th Grade FL Earth/Space
| Term | Definition |
|---|---|
| galaxy | a system that includes of a lot of stars, gas, dust, and planets, held together by gravity. |
| milky way | the galaxy that contains our solar system |
| star | a large ball of hot gases that gives off light and heat, that each have different brightness, color and size. |
| sun | the star at the center of our solar system, everything in our solar system revolves around this star and it provides energy for Earth. |
| solar system | The Sun and all the objects that orbit it, including planets, moons, asteroids and comets |
| planet | a large round object that orbits a star and has a clear orbit (path) |
| revolution | one complete orbit around another object |
| orbit | the path that an object takes as it moves around another object |
| rotation | A planet spinning on its axis |
| gravity | a force that pulls objects |
| moon | a natural satellite that orbits a planet, these do not orbit the sun. |
| asteroids | small, irregular shaped rocks that orbit the sun, made of mostly rock and metal |
| Earth | the 3rd inner planet in our solar system |
| comets | made of ice, dust and rocky material, and appear to have a long tail. |
| milk way | What galaxy holds the rest of the stars that we can see from Earth? |
| moons | The outer planets have many ________. |
| Venus | Which planet has a longer day than its year, meaning it rotates slower than it revolves around the sun? |
| rocky | Inner planets have thinner atmospheres, smaller diameters and _________ surfaces. |
| orbits | Outer planets are quite large, have longer _________ and are made of gas. |
| Mars | the 4th planet from the sun, also has similar surface charactersictics to Earth. |
| observation | A skill used in science, to observe characteristics of something with one's sense (such as size, texture, smell, color, and more) |
| Titan | a moon in our solar system that orbits the planet Mercury. |