Solar System Test Review 2: Question Preview (ID: 8828)

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What is the Oort cloud?
a) a spherical region of comets that surrounds the solar system
b) the cloud of gas and dust that forms a fuzzy outer layer around a comet
c) the trail of gas and dust that streams outward from a comet
d) the region of the solar system that contains most of its asteroids

What is a meteorite?
a) a meteoroid that passes through the atmosphere and hits Earth's surface
b) a streak of light in the sky produced when a meteoroid enters Earth's atmosphere
c) one of the rocky objects that orbit the sun but are too small to be considered a planet
d) a loose collection of ice, dust, and rocky particles with a long elliptical orbit

Copernicus thought that the solar system was
a) an ellipse
b) a constellation
c) geocentric
d) heliocentric

The part of the sun where nuclear fusion occurs is the
a) photosphere
b) core
c) chromosphere
d) corona

Neptune is a(n)
a) inner planet
b) terrestrial planet
c) outer planet
d) dwarf planet

The region between Mars and Jupiter where many rocky objects are found is the
a) asteroid belt
b) Oort cloud
c) convection zone
d) Kuiper Belt

What do all of the inner planets have in common?
a) They have the same period of revolution
b) They have the same period of rotation
c) They have the same diameter
d) They are small and have rocky surfaces

Venus and Earth are much alike in terms of
a) their size and density
b) their rates of rotation
c) their atmospheres
d) their direction of rotation

Earth is unique among the planets because of
a) its rocky surface
b) its oceans
c) its large size
d) the direction in which it rotates

Uranus is different from most other planets because it
a) it is the farthest from the sun
b) is mostly nitrogen and helium
c) rotates on its side
d) has the most moons

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