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5th Grade
Objects in the Sky
| Word | Definition |
|---|---|
| atmosphere | The protective layer of gases that surrounds earth. |
| axis | An imaginary line that the Earth rotates on. |
| corona | The sun's atmosphere which can only be seen during a solar eclipse. |
| eclipse | The passing of one object through the shadow of another. |
| force | A push or pull that causes an object to move, stop, or change direction. |
| galaxy | A group of stars, gas, dust, and planets. |
| gravity | The force that pulls all objects towards each other. |
| orbit | The path an object in space travels as it revolves around another object. |
| revolve | To travel in a closed path around an object. |
| rotate | The spinning of Earth on its axis. |
| satellite | a natural or artificial object that orbits around another object. |
| solar flare | A brief burst of energy that radiates from the sun's photosphere. |
| solar wind | A fast moving stream of particles thrown into space by solar flares. |
| sunspot | A dark spot on the photosphere of the sun that is cooler than the surrounding area. |
| telescope | An instrument that magnifies distant objects, such as the moon and stars. |
| tide | The cyclical rise and fall of the level of the ocean that is caused by gravitational pull. |
| weight | A measure of the pull of gravity on an object. |
| solar eclipse | Occurs when the moon is between the sun and the Earth. |
| lunar eclipse | Occurs when the Earth is between the sun and the moon. |
| crater | A bowl-shaped depression on the surface of an object. |
| waxing | When the moon's phases appear to be growing. |
| waning | When the moon's phases appear to be getting smaller |
| new moon | The lunar phase that occurs when the moon is between the sun and the Earth. |
| full moon | The lunar phase that occurs when the Earth is between the sun and moon. |
| photosphere | The "sphere of light" that makes up the surface of the sun. |
| asteroid | A large rock made up of ice and metal that orbits the sun; sometimes called a "minor planet". |
| comet | A large chunk of ice and dust which follows a long, narrow orbit around the sun. |
| meteoroid | A small space rock that orbits the sun. |
| meteor | Sometimes called "shooting stars" because they have a streak of light that burns behind them. |
| meteorite | A small space rock that has landed on Earth's surface. |
Created by:
lcdwinal
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