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seasons vocab
seasons vocabulary for earth and space science
| Term | Definition |
|---|---|
| axis | an imaginary line running through the center of the Earth from the North Pole to the South Pole around which the planet rotates |
| axial tilt | the angle of a planet's axis away from vertical |
| rotation | the spinning of Earth on its axis |
| revolution | the movement of Earth in an elliptical orbit around the Sun |
| orbit | the gravitationally curved path that Earth follows as it travels around the Sun |
| hemisphere | one half of the Earth divided by the equator into the Northern and Southern hemispheres |
| equator | an imaginary line drawn around the middle of the Earth at an equal distance from both the North and South poles |
| direct sunlight | sunlight that travels in a straight, concentrated path, hitting the Earth more intensely and causing warmer temperatures |
| indirect sunlight | sunlight that strikes the Earth at an angle and is less concentrated, resulting in cooler temperatures |
| solstice | the time twice a year when the Sun is farthest north or south of the equator, marking the longest day (summer solstice) or shortest day (winter solstice) of the year |
| equinox | the time twice a year when the Sun is directly above the equator and day and night are of equal length globally (marking the start of spring and fall) |
| At what angle is Earth's axis tilted at? | 23.5 degrees |
| What takes 24 hours and causes day and night? | a rotation |
| What takes 365.25 days (one year) and causes the seasons? | a revolution |
| What marks the start of spring and fall? | an equinox |
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