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Comets
Test Description: Review questions about comets.
Instructions: Answer all questions to get your test result.
1) Comets tails always point ______________the Sun.
A
at a 45 degree angle to
B
at a 60 degree angle to
C
toward
D
away from
2) What forms the dust and gas tails of a comet?
A
the solar wind
B
the freezing of the corona
C
the comet's motion
D
the Sun's gravity
3) A comet that approaches the Sun every one hundred years would be classified as a ________________ comet.
A
random-period
B
medium-period
C
short-period
D
long-period
4) When Earth runs into the dust trail left behind by a comet that is orbiting the Sun, Earth experiences a ______________.
A
Tunguska event
B
meteor shower
C
comet strike
D
partial eclipse
5) Where do long period comets spend most of their existence?
A
in the Kupier Belt
B
between the orbits of Mars and Jupiter
C
in the Oort Cloud
D
near the Sun
6) On a scale of 1 to 10, with 1 being very unlikely and 10 being very likely, how likely is it that a comet will strike the Earth during your lifetime?
A
7
B
1
C
9
D
4
7) When a long-period comet is farthest from the Sun in its orbit, which features of the comet exist?
A
nucleus
B
dust tail
C
gas tail
D
coma
8) Where do short-period comets originate?
A
main asteroid belt
B
Trojan asteroid belt
C
Kupier Belt
D
Oort Cloud
9) _______________ have a nearly circular orbit.
A
Meteoroids
B
Asteroids
C
Meteorites
D
Comets
10) What is the cloud of gases that forms around the nucleus of a comet called?
A
dust tail
B
Giant Red Spot
C
gas tail
D
coma
*select an answer for all questions
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