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Astro 7n Exam 1 (Unit 1 & 2) Quiz Questions WITH 100- CORRECT ANSWERS
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Astro 7n Exam 1 (Unit 1 & 2) Quiz Questions WITH 100- CORRECT ANSWERS
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EUNICEAstro 7n Exam 1 (Unit 1 & 2) Quiz Questions WITH 100%
CORRECT ANSWERS
Terms in this set (70)
According to Newton's Second Law of Acceleration Increases
motion, if the net force acting on the object
increases while the mass of the object
remains constant, what happens to the
acceleration?
Hint: Remember F = m * a
If the earth were moved to half its current It would be four times stronger
distance from the sun, how would the force
of gravity by the sun on the earth change?
Hint: Recall the form of the equation that
you derived, earlier in the game:
"gravitational acceleration (g) is
proportional to the mass (m) of the body
you are bound to, and INVERSELY
proportional to the SQUARE of your
distance (r) from its center mass," or g = m /
(r * r)
What did newton's law of universal The force of gravity from the sun will be stronger on an object with more mass
gravitation tell us about how gravity works?
Hint: Recall that the FORCE of gravity ('F =
ma' or 'F = mg'), unlike gravitational
acceleration ( just the 'a' or 'g'), depends on
the masses of two objects interacting --
remember that the 'g' in 'F = mg' is also
dependent on a mass value (of a second
object).
1/9
, The earth's radius is about 6400 km. If you Slightly weaker than when you are standing on earth
were to orbit in the space station 150 km
above the ground, the force of gravity you
feel from earth would be...?
Hint: think only about Newton's Law of
Universal Gravitation. Recall the form of the
equation that you derived earlier in the
game: "gravitational acceleration (g) is
proportional to the mass (m) of the body
you are bound to, and INVERSELY
proportional to the SQUARE of your
distance (r) from its center mass," or g = m /
(r * r)
If you were to sit on the ground ere would You are pushing the earth away from yourself with the same force
be a force due to gravity pulling you
toward earth. which of the following is true
according to newton's 3rd law?
Hint: Remember each force has an equal
and opposite reaction.
What would happen to the earth if the It would continue to move in a line in the same direction it was moving when the
Sun's gravity somehow turned off gravity turned off
instantaneously?
Hint: Recall Newton's First Law of Motion
(also referred to as "inertia"): "An object at
rest will remain as rest unless acted upon
by a force. An object in motion will
continue in motion --- in a straight path and
at constant velocity -- unless acted upon
by a force, Think of a moment about the
force of gravity between the Earth and the
Sun, and which way or ways that force is
directed.
Consider a planet whose rotation axis is There are no seasons
NOT tilted with respect to its orbital plane.
What are the season's like on this planet?
Hint: The seasons on Earth aren't caused by
different distances from the Sun in different
parts of the orbit. What are they caused
by?
If the Earth rotated on its axis more slowly Its days would be longer
than it does now...
Hint: How long does it take for the Earth to
rotate
2/9
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