Multiple Choice
Identify the choice that best completes the
statement or answers the question.
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1.
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How long does one Earth rotation on its axis take?
a. | 6 months. | b. | 1 month. | c. | 24
hours. |
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2.
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How long does one revolution of Earth around the sun take?
a. | all of the above | b. | one year. | c. | same as one
rotation. |
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3.
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What is the force that attracts all objects toward each other?
a. | gravity. | b. | mass. | c. | weight. |
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4.
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What does the strength of the force of gravity depend on?
a. | the masses of the objects and the distance between them. | b. | the weight of the
objects | c. | only the masses of the objects |
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5.
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In a heliocentric system, Earth revolves around
a. | the moon. | b. | the sun. | c. | Mars. |
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6.
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Who discovered tha each planet’s orbit is an ellipse?
a. | Galileo. | b. | Copernicus. | c. | Kepler. |
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7.
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The solar system consists of the sun, several kinds of smaller objects
such as comets and asteroids, and
a. | more than 100 planets. | b. | eight planets and their
moons. | c. | the star Proxima Centauri. |
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8.
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The shape of a planets orbit is
a. | an ellipse | c. | a circle | b. | an oval |
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9.
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The relative position of the sun in the solar system is
a. | in an orbit around the Earth | c. | many light years from
Earth | b. | at the focus point of the elliptical paths of the
planets |
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10.
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The longest distance across an elliptical orbit is
a. | 1 AU | c. | is the major axis | b. | 20 AU |
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11.
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1/2 of the longest distance across Earth’s elliptical orbit
is
a. | 150 million AU | c. | 1 AU | b. | 2 AU |
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12.
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What is the average distance venus is from the sun?
a. | the length of the semi major axis of venus’s elliptical orbit | c. | 1
AU | b. | the length of the major axis of venus’s elliptical
orbit |
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13.
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An astronomical unit is
a. | an AU | c. | the average distance Earth is from the sun | b. | All of the
above |
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14.
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The speed of a planet
a. | decreases as the planet gets closer to the sun | c. | is constant | b. | increases as the
planet gets closer to the sun |
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15.
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What is the mathematical relationship between a planets average
distance from the sun and its orbital period?
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16.
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The time it takes a planet to go around the sun once is known as
a. | AU | c. | a year | b. | its orbital
period |
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17.
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The A in Kepler’s 3rd law formula (P2 = A3)
represents
a. | the average number of AUs a planet is from the sun. | c. | All of the
above | b. | The average distance a planet is from the sun |
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18.
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A solar system begins as a huge cloud of gas called a
a. | super nova | c. | comet | b. | nebula |
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19.
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The force that pulls matter toward matter is
a. | Boyle’s law | c. | pressure | b. | gravity |
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20.
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A nebula is made up of mostly the gases
a. | helium and neon | c. | hydrogen and helium | b. | xenon and radon |
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21.
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What shape will a a colapsing nebula, take as the matter starts to
swirl?
a. | sphere | c. | dog with 3 legs | b. | disk |
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22.
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What is a planetesimal?
a. | a forming planet | c. | a dead planet | b. | a gas giant |
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23.
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The average distance that Uranis is from the sun is 54AU. What is the length of
the major axis of the elliptical path of Uranis?
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24.
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The sun produces energy by
a. | attracting it with the force of gravity. | b. | nuclear
fission. | c. | burning fuels such as oil. | d. | nuclear fusion. |
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25.
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The solar wind is a stream of electrically charged particles that extend outward
from the sun’s
a. | chromosphere. | b. | photosphere. | c. | corona. | d. | core. |
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26.
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The interior of the sun is composed of the convective zone, the radiative zone,
and the
a. | core. | c. | corona. | b. | chromosphere. | d. | photosphere. |
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27.
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What process gives the sun its energy?
a. | waxing | c. | asteroid collisions | b. | annular eclipses | d. | nuclear fusion |
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28.
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One way that scientists measure distances in space is by using
a. | radar. | c. | prograde rotation. | b. | astronomical units. | d. | diameters. |
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29.
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An astronomical unit (AU) is the average distance
a. | between Mercury and the sun. | c. | light travels in 1
minute. | b. | between Mercury and Pluto. | d. | between Earth and the sun. |
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