Science TEK 6.9 A Vocabulary

Front

-the imaginary line through Earth that extends from the North Pole to the South Pole and is the center of Earth's rotation

Back

axis

Front

-temperatures are higher where the sun's rays are direct

Back

direct

Front

-half of a sphere; Earth and the celestial sphere can be divided into northern and southern or eastern and western hemispheres

Back

hemisphere

Front

Why are temperatures lower in certain areas?

Back

The sun's rays are indirect.

Front

-a curved path followed by a satellite as it revolves around an object.

Back

orbit

Front

-the movement of one object around a center or another object.

Back

revolution

Front

-the four natural divisions of the year based on changes in temperature due to varying amounts of sunlight received; caused by the tilt of the earth during its revolution

Back

seasons

Front

-the slant of Earth's axis, which is 23.5 degrees from vertical compared to Earth's orbital plane around the sun; results in the North Pole always pointing toward the star.

Back

tilt