Early Models
and
Astronomers
Planets
May the
Force be with
you
Shoot for
the Moon
Objects in
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Space
Model where planets revolve
around the Earth
Answer
Geocentric
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The moon’s crust is mainly made of these
two features:
Answer
Anorthrosites and Maria
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Who proposed the
Heliocentric model?
Answer
Copernicus
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The law that describes the
path of a planet that orbits
the sun is called ________
Answer
Law of Ellipses
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What astronomer said
planets moved in
epicycles, which are little
circles as they went
around Earth?
Answer
Ptolemy
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What is the least dense planet
that also has bands and rings
made of dust and ice?
Answer
Saturn
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What is the largest planet
in the solar system?
Answer
Jupiter
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Planet who’s axis is
almost parallel to its
plane of orbit
Answer
Uranus
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What planet gets its color
from large amounts of
methane?
Answer
Uranus
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What 2 inner planets are
most alike in their size
and mass?
Answer
Venus and Earth
.
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Degree of elongation
of an elliptical orbit
Answer
Eccentricity
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The time required for a body to complete a single orbit
Answer
Orbital Period
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Force that PULLS on a
body in space
Answer
Gravity
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What is a bright streak of
light that results from a
meteoroid burning up in
our atomosphere?
Answer
Meteor
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Pattern in which is
appears as though the
planets are moving
backward relative to the
stars
Answer
Retrograde Motion
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The force of gravity
between Earth and moon
cause _____ in bodies of
water
Answer
Tides
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Dark areas on the moons
surface
Answer
Mare
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When the lighted part
of the moon appears
to increase, the moon
is said to be
__________.
Answer
Waxing
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This occurs when the
shadow of one celestial
body falls on another
celestial body
Answer
Eclipse
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What do we call the fine, smooth dust
on the moon?
Answer
regolith
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Fragments of rock that orbit
the sun
Answer
Asteroid
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Small bodies of ice, rock and
dust that follows highly
elliptical orbits around the
sun
Answer
Comets
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Any part of a meteoroid that
didn’t burn up when
entering the Earth’s
atmosphere and reached
Earth’s surface
Answer
Meteorite
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Region that starts beyond
Neptunes orbit which
contains dwarf planets and
other small bodies of ice
Answer
Kuiper Belt
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Large cloud of dust and ice
believed to hold nuclei of
billions of comets and
possible origin of our comets
Answer
Oort Cloud
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