Semester Exam Review

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Just as Earth moves around the sun, the moon revolves around Earth. About how many Earth days does it take for the moon to travel around Earth?

Which term describes the periodic rise and fall of the water level in the oceans and other large bodies of water?

The sun releases large amounts of energy. The temperature of the sun at its core, for example, is over 15 million kelvins. Through what process does the sun release energy?

The diagram below shows a model of Earth and the sun. Jan rotates Earth 360 degrees about its axis. Which of the following does one complete rotation of Earth represent?

Zach is visiting Hilo, Hawaii. He wants to collect seashells, and the local people tell him that the best time to collect shells is at low tide. According to the diagram below,

A scientist finds a star that is far away from Earth. Upon closer examination, she discovers that the star appears to have several smaller bodies orbiting it. The scientist dra

One way to compare bodies in space is by their relative sizes. Which of the following is larger than a galaxy?

A light-year (ly) is the distance light travels in one year. If a star is 3 ly away from Earth, how long does it take that star’s light to travel far enough to reach Earth?