| Term | Definition |
|---|---|
| How does earth move? | earth moves in space in two major ways: rotation and revolution |
| Axis | imaginary line that passes through earth's center and the north and south poles |
| Rotation | the spinning of earth on its axis / 1 rotation= 24h |
| Orbit | a slightly elongated circle, or ellipse |
| Revloution | movement of one object around another 1 revolution = 1year |
| Calendar | system of organizing time that defines the beginning, length, and divisions of a year |
| What causes seasons? | earth has seasons because its axis is tilted as it revolves around the sun |
| What would happen if earth's axis was straight? | there would be no seasons because the temperatures would stay the same all year round |
| Solstice | the days where the sun appears farthest north of the equator and farthest south of the equator n= summer June 21 s= winter December 21 |
| Equinox | half way between solstices march and September |
