Ch 27 & 28 Astronomy
Early Models and
Astronomers
Planets May the Force be with
you
Shoot for the Moon
Objects in
Space
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Model where planets revolve around the Earth
Answer
Answer
What astronomer proposed the Geocentric model?
Who proposed the Heliocentric model?
Answer
The law that describes the path of a planet that orbits the sun is called ________
Answer
Law of Ellipses
Home
What astronomer said planets moved in
epicycles, which are little circles as they went
around Earth?
Answer
What is the least dense planet that also has bands and rings made of dust and ice?
Answer
What is the largest planet in the solar system?
Answer
Planet who’s axis is almost parallel to its
plane of orbit
Answer
What planet gets its color from large amounts of
methane?
Answer
What 2 inner planets are most alike in their size and mass?
Answer
Home
.
Venus and Earth
Degree of elongation of an elliptical orbit
Answer
Eccentricity
Home
Answer
The time required for a body to complete a single orbit
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Orbital Period
Force that PULLS on a body in space
Answer
When a moving body remains in a constant
motion unless acted on by an outside force
Answer
Pattern in which is appears as though the
planets are moving backward relative to the
stars
Answer
Retrograde Motion
Home
Answer
The force of gravity between Earth and moon cause _____ in bodies of
water
Dark areas on the moons surface
Answer
When the lighted part of the moon appears to increase, the moon
is said to be __________.
Answer
This occurs when the shadow of one celestial body falls on another
celestial body
Answer
Answer
Name one lunar surface feature
Answers may include: Mare, rilles, ridges, craters,
regolith
Home
Fragments of rock that orbit the sun
Answer
Small bodies of ice, rock and dust that follows highly
elliptical orbits around the sun
Answer
Any part of a meteoroid that didn’t burn up when entering the Earth’s
atmosphere and reached Earth’s surface
Answer
Region that starts beyond Neptunes orbit which
contains dwarf planets and other small bodies of ice
Answer
Large cloud of dust and ice believed to hold nuclei of
billions of comets and possible origin of our comets
Answer