ASTRO 7N UNIT 1 AND 2 GAME EXAM QUESTIONS AND
ANSWERS GRADED A+ 100% VERIFIED.
How high are you jumping at twice Earth's mass compared to
Earth's mass? ANS >>> Half as high
Since the jump height is half as high what does that tell us
about gravity? ANS >>> Twice as much. (More gravity = lower
jump height)
Now we can change the mass to 0.5M. If we do, how much
higher are you jumping than at one Earth mass? ANS >>> Twice as
high
Now we can change the mass to 0.25M. If we do, how much
higher are you jumping? ANS >>> Four times as high
,As the mass of the planet increases, the jump height _______
by the same factor as the mass. ANS >>> Decreases
Let's keep the mass at Earth's mass but change the radius to
half the radius of the earth. How much higher do you jump? ANS
>>> One-quarter as high
Let's keep the mass at Earth's mass but change the radius to
twice the radius of earth. How high do you jump? ANS >>> Four
times as high
Let's keep the mass at Earth's mass but change the radius to
three times the radius of the earth. How high do you jump? ANS
>>> Nine times as high
As the radius of the planet increases, the jump height _____ as
the square of the radius. ANS >>> Increases
What is the relationship between gravity, mass and radius? ANS
>>> g ∝ m/r^2
Experiment using Mars' and Earth's gravity to see what effect
they have on gravity. What is its surface gravity compared to
,Earth? (Mars has about 1/10 the mass and 1/2 the radius of
Earth) ANS >>> 0.4 times
The Moon has about 1/100 the mass of Earth and about 1/4 the
radius. What is the surface gravity of the Moon compared to
earth? ANS >>> 16/100
Jupiter has about 300 times the mass of Earth and 10 times the
radius. What is the surface gravity of Jupiter compared to
Earth? ANS >>> 3
Saturn has about 100 times the mass of Earth and 10 times the
radius. What is the surface gravity of Saturn compared to Earth?
ANS >>> 1
Notice that the moon in the panel at the upper right is half
illuminated. Now, how much of the TOTAL surface of the Moon
is illuminated in this phase? ANS >>> 50%
Now, how much of the TOTAL surface of the moon is illuminated
in the Full Moon phase? ANS >>> 50% (moon is always illuminated
50%)
, What time is it for any observer on Earth when they see the full
Moon rising? ANS >>> 6PM (Full Moon rises at sunset)
Sunset occurs 6 hours before the Full Moon transits. Now, when
does the Full Moon set? ANS >>> 6AM (Full Moon sets at sunrise)
When does the Waxing crescent phase (overhead for the green
observer in the picture) RISE? Keep in mind that the Earth is
rotating counter clockwise. ANS >>> 9AM
When does the Waning Gibbous phase SET? ANS >>> 9AM
What phase must the moon be in so that an observer on Earth
will see the Moon overhead at 9AM? ANS >>> Waning Cresent
Where on the sky does the Moon set? ANS >>> West
Both the Moon and the Sun rise and set for the same reason. It
is because of: ANS >>> the rotation of the Earth
ANSWERS GRADED A+ 100% VERIFIED.
How high are you jumping at twice Earth's mass compared to
Earth's mass? ANS >>> Half as high
Since the jump height is half as high what does that tell us
about gravity? ANS >>> Twice as much. (More gravity = lower
jump height)
Now we can change the mass to 0.5M. If we do, how much
higher are you jumping than at one Earth mass? ANS >>> Twice as
high
Now we can change the mass to 0.25M. If we do, how much
higher are you jumping? ANS >>> Four times as high
,As the mass of the planet increases, the jump height _______
by the same factor as the mass. ANS >>> Decreases
Let's keep the mass at Earth's mass but change the radius to
half the radius of the earth. How much higher do you jump? ANS
>>> One-quarter as high
Let's keep the mass at Earth's mass but change the radius to
twice the radius of earth. How high do you jump? ANS >>> Four
times as high
Let's keep the mass at Earth's mass but change the radius to
three times the radius of the earth. How high do you jump? ANS
>>> Nine times as high
As the radius of the planet increases, the jump height _____ as
the square of the radius. ANS >>> Increases
What is the relationship between gravity, mass and radius? ANS
>>> g ∝ m/r^2
Experiment using Mars' and Earth's gravity to see what effect
they have on gravity. What is its surface gravity compared to
,Earth? (Mars has about 1/10 the mass and 1/2 the radius of
Earth) ANS >>> 0.4 times
The Moon has about 1/100 the mass of Earth and about 1/4 the
radius. What is the surface gravity of the Moon compared to
earth? ANS >>> 16/100
Jupiter has about 300 times the mass of Earth and 10 times the
radius. What is the surface gravity of Jupiter compared to
Earth? ANS >>> 3
Saturn has about 100 times the mass of Earth and 10 times the
radius. What is the surface gravity of Saturn compared to Earth?
ANS >>> 1
Notice that the moon in the panel at the upper right is half
illuminated. Now, how much of the TOTAL surface of the Moon
is illuminated in this phase? ANS >>> 50%
Now, how much of the TOTAL surface of the moon is illuminated
in the Full Moon phase? ANS >>> 50% (moon is always illuminated
50%)
, What time is it for any observer on Earth when they see the full
Moon rising? ANS >>> 6PM (Full Moon rises at sunset)
Sunset occurs 6 hours before the Full Moon transits. Now, when
does the Full Moon set? ANS >>> 6AM (Full Moon sets at sunrise)
When does the Waxing crescent phase (overhead for the green
observer in the picture) RISE? Keep in mind that the Earth is
rotating counter clockwise. ANS >>> 9AM
When does the Waning Gibbous phase SET? ANS >>> 9AM
What phase must the moon be in so that an observer on Earth
will see the Moon overhead at 9AM? ANS >>> Waning Cresent
Where on the sky does the Moon set? ANS >>> West
Both the Moon and the Sun rise and set for the same reason. It
is because of: ANS >>> the rotation of the Earth
