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Earth and Space
| Term | Definition |
|---|---|
| Solar System | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune |
| Axis | An Imaginary line that runs through the planet's north and south poles |
| Rotation | To spin. The Sun, Earth (24 days) and Moon (28 days) all spin on their axis. |
| Revolution | To orbit or go around. The Earth (365 days) and the Moon (28 days) both revolve |
| Day and Night | Caused by the Earth's Rotation |
| Seasons | The tilt of the Earth as it revolves around the sun causes seasons. |
| Moon Phases | As the Moon revolves around the Earth, we see different parts of the moon in the sky. It takes one week from each major phase to the next or 4 weeks for a full cycle. |
| Sunrise/Sunset | The sun rises in the East, and sets in the West |
| Tides | Caused by the Moon's gravity. 2 high tides, and 2 low tides a day. |
| Gravity | An object's pull. All objects in space have gravity. The more mass an object has, the more gravity it will have. |
| Evaporation | Caused by the sun's heat. Liquid to gas. |
| Condensation | When water cools in the atmosphere. Gas to liquid. |
| Precipitation | Rain, sleet, snow, or hail. |
| Runoff | The movement of water over the Earth's surface. |
| Groundwater | Water located beneath the Earth's surface. |
| Weather | Conditions at a specific time such as temperature, cloud cover, wind speed, and rainfall. |
| Climate | Weather patterns of a larger area over a long period of time. not very specific. |
| Inner Planets | Rocky Planets inside the asteroid belt. |
| Outer Planets | Gas Planets outside the asteroid belt. |