Semester Exam Review: Question Preview (ID: 6623)

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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) 9:00 a.m.
b) noon
c) 3:00 p.m.
d) 7:00 p.m

One way to compare bodies in space is by their relative sizes. Which of the following is larger than a galaxy?
a) star
b) planet
c) universe
d) solar system

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?
a) vibration
b) convection
c) nuclear fusion
d) electromagnetic radiation

Astronomers use the light-year to describe the relationship between bodies in space. For example, the Andromeda galaxy is 2.4 million ly away from Earth. Which of the following
a) gram
b) kilometer
c) second
d) degree celsius

Which statement best describes stars?
a) large planets that are composed mostly of gases
b) celestial bodies made up of gas that give off light
c) faint dots of light that can be seen from Earth’s surface
d) objects that form in the outer parts of the solar system

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?
a) day
b) month
c) year
d) season

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
a) moon
b) galaxy
c) planet
d) solar system

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?
a) 7 days
b) 27 days
c) 180 days
d) 365 days

Which term describes the periodic rise and fall of the water level in the oceans and other large bodies of water?
a) current
b) neap
c) tide
d) wave

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?
a) 3 min
b) 3 hour
c) 3 years
d) 3 light-years

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