ASTRO EXAM #7 QUESTIONS AND ANSWERS
According to Newton's Second Law Of Motion, if the net force acting
On the Object increases While the mass Of the Object remains
Constant, what happens to the acceleration?
A: acceleration decreases
B: acceleration increases
C: acceleration remains the same
D: acceleration is independent Of mass - correct answer B: acceleration increases
If the Earth were moved to half its current distance from the Sun,
How would the force Of gravity by the Sun on the Earth change?
A: It would become four times stronger.
B: would become four times weaker.
C: It would be unchanged.
D: It would become two times stronger.
E: It would become two times weaker. - correct answer A: It would become four times
stronger.
What did Newton' Law Of universal Gravitation tell us about how
Gravity works?
A: The force will be weaker on an Object that is closer to Sun
Than one farther from the Sun.
B: Gravity only works on the surface of planets, and there is no
Gravity in space.
C: Tile force of gravity between two objects depends on the sum of
The two masses.
D: The force Of gravity from the Sun Will be stronger an Object
With more mass.
E: Gravity will cause the Moon to crash into the Earth - correct answer D: The force Of
gravity from the Sun Will be stronger an Object
With more mass.
The Earth radius is about 6400 km. If you were in orbit in the Space
Station 150 km above the ground , the force Of gravity you feel from
Earth would be:
A: slightly weaker than when you are standing on Earth
B: slightly stronger than when you are standing on Earth
C: equal to What you feel when standing on Earth
D: equal to What you feel when standing on the moon
E: zero - correct answer A: slightly weaker than when you are standing on Earth
If you were to sit on the ground, there would be a force to
Gravity pulling you toward the Earth. Which of the following is true
To Newton's 3rd law?
A: you are pulling the Earth toward yourself with the same force
,B: you are not exerting any force on the Earth
C: you are pushing the Earth away With Same
D: you will continue to sit in the same place without moving - correct answer A: you are
pulling the Earth toward yourself with the same force
What would to the Earth if the Sun's gravity somehow turned
Off instantaneously?
A: It Would continue to orbit Without any changes.
It gradually Slow down and to a complete Stop.
C: It would gradually speed up but continue to follow the same path.
D: It would come to a stop.
E: It would continue to move in a line in the same direction it Was
Moving when the gravity turned off. - correct answer E: It would continue to move in a
line in the same direction it Was
Moving when the gravity turned off.
Consider a planet whose rotation axis is NOT tilted with to its Orbital plane. What are
the seasons like On this planet?
A: longer than on Earth.
B: shorter than those on Earth.
C: there are no seasons.
D: the same as Earth.
E: Reversed from those on Earth (winter, fall, summer, spring). - correct answer C:
there are no seasons.
If the Earth rotated on its axis more slowly than it does now:
A: its days would be shorter
B: its days would be Longer
C: its months would be longer
D: its months would be shorter
E: its years would be longer - correct answer B: its days would be Longer
If Earth had its orbit changed so that at all points along its orbit it were always the same
distance from the Sun (circular how would this affect the seasons on Earth?
A: They would be longer than they are now.
B: They would be shorter than they are now.
C: There would no longer be seasons.
D: They would be the same as they are now.
E: They would be reversed in order (winter, fall, summer, spring). - correct answer D:
They would be the same as they are now.
A new planet orbits its star faster than the Earth orbits the Sun and it rotates more
slowly than the Earth rotates. Which of the following is true?
A: The new planet has a longer year than Earth and a shorter day than
B: The new planet has a longer year than Earth and a longer day than Earth.
C: The new planet has a shorter year than Earth and a Longer day than Earth
, D: The new planet has a longer year than Earth and a shorter day than Earth
E: The planet has as shorter year than Earth and a shorter day than Earth. - correct
answer C: The new planet has a shorter year than Earth and a Longer day than Earth
What time of year is it dark all day (and night) at the south pole of Earth?
A: June
B: December
C: never
D: September
E: March - correct answer A: June
First question: If Earth's Moon was Full on May 1 , 2007. When was it next in the First
Quarter phase after this Full Moon?
A: May 8.
B: May 22.
C: June 1.
D: May 15.
E: May 4. - correct answer B: May 22.
HOW much Of the total surface area Of the MOM is illuminated by Sunlight during the
Full Moon phase?
A: one half.
B: all of it.
C: one quarter.
D: none of it.
E: it varies from Full to Full - correct answer A: one half.
At approximately what time does the third quarter moon rise?
A: noon
B: 6pm
C: midnight
D: 6am
E: 9pm - correct answer C: midnight
Approximately two weeks after a Solar Eclipse, what phase will the Moon be in?
A: New.
B: Full.
C: Third Quarter
D: Waning Crescent.
E: Waxing Crescent. - correct answer B: Full.
A moon orbits a planet in exactly the same plane as the planet orbits its Star. HOW
Often does this planet experience a solar eclipse?
A: every rotation Of the planet (its day).
B: Once every orbit of its moon (its month).
C: Once every orbit of the planet around its Sun (its year).
According to Newton's Second Law Of Motion, if the net force acting
On the Object increases While the mass Of the Object remains
Constant, what happens to the acceleration?
A: acceleration decreases
B: acceleration increases
C: acceleration remains the same
D: acceleration is independent Of mass - correct answer B: acceleration increases
If the Earth were moved to half its current distance from the Sun,
How would the force Of gravity by the Sun on the Earth change?
A: It would become four times stronger.
B: would become four times weaker.
C: It would be unchanged.
D: It would become two times stronger.
E: It would become two times weaker. - correct answer A: It would become four times
stronger.
What did Newton' Law Of universal Gravitation tell us about how
Gravity works?
A: The force will be weaker on an Object that is closer to Sun
Than one farther from the Sun.
B: Gravity only works on the surface of planets, and there is no
Gravity in space.
C: Tile force of gravity between two objects depends on the sum of
The two masses.
D: The force Of gravity from the Sun Will be stronger an Object
With more mass.
E: Gravity will cause the Moon to crash into the Earth - correct answer D: The force Of
gravity from the Sun Will be stronger an Object
With more mass.
The Earth radius is about 6400 km. If you were in orbit in the Space
Station 150 km above the ground , the force Of gravity you feel from
Earth would be:
A: slightly weaker than when you are standing on Earth
B: slightly stronger than when you are standing on Earth
C: equal to What you feel when standing on Earth
D: equal to What you feel when standing on the moon
E: zero - correct answer A: slightly weaker than when you are standing on Earth
If you were to sit on the ground, there would be a force to
Gravity pulling you toward the Earth. Which of the following is true
To Newton's 3rd law?
A: you are pulling the Earth toward yourself with the same force
,B: you are not exerting any force on the Earth
C: you are pushing the Earth away With Same
D: you will continue to sit in the same place without moving - correct answer A: you are
pulling the Earth toward yourself with the same force
What would to the Earth if the Sun's gravity somehow turned
Off instantaneously?
A: It Would continue to orbit Without any changes.
It gradually Slow down and to a complete Stop.
C: It would gradually speed up but continue to follow the same path.
D: It would come to a stop.
E: It would continue to move in a line in the same direction it Was
Moving when the gravity turned off. - correct answer E: It would continue to move in a
line in the same direction it Was
Moving when the gravity turned off.
Consider a planet whose rotation axis is NOT tilted with to its Orbital plane. What are
the seasons like On this planet?
A: longer than on Earth.
B: shorter than those on Earth.
C: there are no seasons.
D: the same as Earth.
E: Reversed from those on Earth (winter, fall, summer, spring). - correct answer C:
there are no seasons.
If the Earth rotated on its axis more slowly than it does now:
A: its days would be shorter
B: its days would be Longer
C: its months would be longer
D: its months would be shorter
E: its years would be longer - correct answer B: its days would be Longer
If Earth had its orbit changed so that at all points along its orbit it were always the same
distance from the Sun (circular how would this affect the seasons on Earth?
A: They would be longer than they are now.
B: They would be shorter than they are now.
C: There would no longer be seasons.
D: They would be the same as they are now.
E: They would be reversed in order (winter, fall, summer, spring). - correct answer D:
They would be the same as they are now.
A new planet orbits its star faster than the Earth orbits the Sun and it rotates more
slowly than the Earth rotates. Which of the following is true?
A: The new planet has a longer year than Earth and a shorter day than
B: The new planet has a longer year than Earth and a longer day than Earth.
C: The new planet has a shorter year than Earth and a Longer day than Earth
, D: The new planet has a longer year than Earth and a shorter day than Earth
E: The planet has as shorter year than Earth and a shorter day than Earth. - correct
answer C: The new planet has a shorter year than Earth and a Longer day than Earth
What time of year is it dark all day (and night) at the south pole of Earth?
A: June
B: December
C: never
D: September
E: March - correct answer A: June
First question: If Earth's Moon was Full on May 1 , 2007. When was it next in the First
Quarter phase after this Full Moon?
A: May 8.
B: May 22.
C: June 1.
D: May 15.
E: May 4. - correct answer B: May 22.
HOW much Of the total surface area Of the MOM is illuminated by Sunlight during the
Full Moon phase?
A: one half.
B: all of it.
C: one quarter.
D: none of it.
E: it varies from Full to Full - correct answer A: one half.
At approximately what time does the third quarter moon rise?
A: noon
B: 6pm
C: midnight
D: 6am
E: 9pm - correct answer C: midnight
Approximately two weeks after a Solar Eclipse, what phase will the Moon be in?
A: New.
B: Full.
C: Third Quarter
D: Waning Crescent.
E: Waxing Crescent. - correct answer B: Full.
A moon orbits a planet in exactly the same plane as the planet orbits its Star. HOW
Often does this planet experience a solar eclipse?
A: every rotation Of the planet (its day).
B: Once every orbit of its moon (its month).
C: Once every orbit of the planet around its Sun (its year).
