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seasons
Term | Definition |
---|---|
axis | An imaginary line the extends through the earths north pole and out the south pole; tilted at 23.5 degrees |
rotation | to spin on axis |
revolution | Movement in an elliptical path around a center |
season cycle | the cycle of summer, summer, fall, winter, and spring due to variation in intensity of the sun and length of day caused by the tilt of the eaarth |
day/night cycle | the cycle of daytime and nighttime caused by the rotation of the earth about its axis |
equator | An imaginary line drawn halfway between the northern and southern poles; divides the northern and southern hemispheres |
hemisphere | Half of a sphere; the earth is typically divided into the northern and southern hemispheres |