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Cycles Vocabulary
SOL 6.8, seasons, lunar terms
| Term | Definition |
|---|---|
| atmosphere | the layer of air that surrounds the Earth like a blanket, is made up of a mixture of gases plus small amounts of tiny solids and liquids, and keeps temperatures on Earth just right to support life. |
| axis | the imaginary line that Earth spins around and whose tilt is responsible for Earth's seasons |
| eclipse | an event that happens when the moon passes between the sun and Earth(solar eclipse) or Earth passes between the sun and the moon (a lunar eclipse), producing a shadow |
| magnetic field | the area around a magnet in which magnetic forces act |
| phase | the change in appearnace of the moon when seen from Earth, depending on the position of the moon, the sun, and Earth in space. |
| revolution | the movement of Earth in a regular, curved path around the sun, which takes one year to complete. |
| rotation | the spinning of Earth on its imaginary axis, which occurs once every 24 hours and causes day and night as Earth rotates toward or away from the sun. |
| tides | the changes in the level of ocean water during the course of a day-most places have tow hight tides and tow low tides daily; one cuase of tides is the pull of gravity between Earth, the moon, and the sun |
| waning | the change in the moon's appearance when its seems to be getting smaller from night to night |
| waxing | the change in appearance of the moon when it appears to be getting larger from night to night. |