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Science test #2

Multiple choice on astronomy

QuestionAnswer
what event occurs when earth' shadow falls on the moon or when the moon's shadow falls on the earth? eclipse
which earth motion causes day and night? rotation
what is a large group of stars, gas, and dust held together by gravity called? galaxy
what is a group of stars that forms a pattern in the sky called? constellation
which movement of earth causes it to travel around the sun? revolution
what is caused by the tilt of earth's axis and its revolution? seasons
what is caused by the gravity of the moon and the sun? tides
an astronomical unit equals the distance from earth to? the sun
why is earth a unique planet in the solar system? it has surface oceans
how many galaxies could be in the universe? 100 billion
what results from earth's rotation? night and day
what unit if often used to measure long distances in space? light-year
how many planets are in the solar system? eight
which objects shadow travels across part of earth during a solar eclipse? the moon
if a star is massive enough, what can result after it produces and supernova? a black hole
what term refers to the dark smooth regions on the moon's surface? maria
what term refers to the light colored mountainous regions on the moon? lunar highlands
what formed when meteorites struck the moon's surface? craters
what planet is closest to the sun? mercury
what is composed of ice and rock? a comet
what is the largest thing in space? the universe
what term refers to an alternate rise and fall of sea level? tide
what unit is most useful for measuring distances in the solar system? astronomical unit
by which angle is earth's axis tilted? 23.5
Created by: 9oscar9
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