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Sun-Earth-Moon
Solar System
| Term | Definition |
|---|---|
| Astronomy | The study of space and celestial objects such as stars, planets, and moons. |
| Astronomer | Someone who studies astronomy. |
| Rotation | The action of turning around an axis or center |
| Revolution | When a celestial body orbits once fully around a sun creating one year. |
| Orbit | The path a celestial body or satellite takes around another celestial body or satellite. |
| Constillation | A group of stars that that form a recognizable shape or image. |
| Geocentric theory | The idea that the Earth is the center of the universe, instead of the sun, and that all the planets and celestial bodies orbit it. |
| Heliocentric theory | The Earth, planets, and other objects orbit the sun, instead of the Earth. |
| Comet | A frozen ball of dust that when near the sun, has a tail pointed away from the sun. |
| Gravity | An invisible force that attracts objects toward the origin of it. |
| Solar system | A collection of celestial bodies and other objects orbiting a star. |
| NASA | The National Aeronautics and Space Administration. |
| Meteor | A small body of space matter that when entering a planets atmosphere, it becomes incandescent. |
| Telescope | A device that makes far away objects seem closer and clearer. |
| Solstice | When the sun reaches the highest or lowest point in the sky at solar noon, marked by the shortest and longest days. |
| Equinox | When the sun's light points directly at the equator and their is equal day and night. |
| Axis | An imaginary line drawn through a planet that they rotate on. |
| Equator | An imaginary line drawn around the center Earth dividing the Southern and Northern Hemispheres. |
| Waxing | To Grow |
| Waning | To Shrink |
| Moon Phases | Stages the moon goes through during its orbit. New Moon, Waxing Crescent, 1st Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, 3rd Quarter, Waning Crescent... |
| Moon's orbital tilt | 5 degrees |
| Sun | A star in which planets orbit. |
| Satellite | An object that orbits something. |
| Orbit | The path a celestial object takes around another. |
| Solar Eclipse | When the moon moves in front of Earth and blocks out the suns light |
| Lunar eclipse | When the Earth crosses in front of the moon and blocks out its light. |
| Maria | A flat surface eon the moon that looks like water. Latin for "seas" |
| Tides | The alternate rising and falling of ocean levels. High tide when the tides are taller, and Low tide when the tides are shorter. |
| Spring tide | When the SEM are aligned, and the high tide is unusually strong. |
| Neap tide | When the sun and moon are at a right angle, there is the lowest difference between tides. |
| Umbra | The most shaded part of the moon's or earth's shadow during an eclipse. |
| Penumbra | The partially shaded part of the moon's or earth's shadow during an eclipse. |
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1963181268
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