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unit 4
| Question | Answer |
|---|---|
| rotation | The spinning of a body, such as a planet, on its axis is called |
| day | The time it takes a planet to complete one full rotation on its axis is called a |
| revolution | The motion of a body that travels around another body in space is called |
| year | Earth completes a full revolution around the sun in 365 ¼ days, or about one |
| season | is characterized by a pattern of temperature and other weather trends. |
| equinox | sunlight shines equally on the Northern and Southern Hemispheres. |
| solstice | the area of sunlight is at a maximum in one hemisphere and at a minimum in the other hemisphere. |
| satellite | A body that orbits a larger body is called a |
| gravity | All bodies that have mass exert a force that pulls other objects with mass toward themselves. This force is called |
| lunar phases | As the moon revolves around Earth, the portion of the moon that reflects sunlight back to Earth changes, causing the moon’s appearance to change. These changes are called |
| eclipse | is an event during which one object in space casts a shadow onto another. |
| umbra | is the darkest part of a shadow. |
| penumbra | Around it is a spreading cone of lighter shadow called the |
| tide | are daily changes in the level of ocean water. |
| tidal range | is the difference between the levels of ocean water at high tide and low tide. |
| spring tide | Tides that have the largest daily tidal range are |
| neap tide | Tides that have the smallest daily tidal range are |