Exit Check 3.3 - Universal Gravitation
Authored by Scott Ness
Physics
9th Grade
NGSS covered
Used 12+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.3.1
Which of the following formulas is the correct equation for the law of Universal gravitation?
Answer explanation
For these problems, you are practicing your proportional reasoning using Newton’s Law of Universal Gravitation as it appears on your yellow reference sheet.
You will always be determining the effect on the force of gravity, so begin by identifying which variable is changing—either mass or distance.
Important: Distance is squared in this law. That means any change to distance must also be squared before comparing its effect on gravity.
Tags
NGSS.HS-PS2-4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.3.1
If the mass of one object is quadrupled (x4) and the distance between the objects does not change, how will the force of gravity between both of the two objects change as a result?
The force of gravity will be halved (divided by 2)
The force of gravity will be doubled
The force of gravity will also be quadrupled
The force of gravity will be quartered (divided by 4)
Answer explanation
For these problems, you are practicing your proportional reasoning using Newton’s Law of Universal Gravitation as it appears on your yellow reference sheet.
You will always be determining the effect on the force of gravity, so begin by identifying which variable is changing—either mass or distance.
Important: Distance is squared in this law. That means any change to distance must also be squared before comparing its effect on gravity.
Tags
NGSS.HS-PS2-4
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.3.1
If the mass of both objects remains unchanged but the distance between them is increased to 5 times what it was before, how will the force of gravity between both of the two objects change as a result?
The force of gravity will increased to 5 times what it was before
Answer explanation
For these problems, you are practicing your proportional reasoning using Newton’s Law of Universal Gravitation as it appears on your yellow reference sheet.
You will always be determining the effect on the force of gravity, so begin by identifying which variable is changing—either mass or distance.
Important: Distance is squared in this law. That means any change to distance must also be squared before comparing its effect on gravity.
Tags
NGSS.HS-PS2-4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Answer explanation
Refer back to today’s note slides for guidance on how to enter scientific notation and set up the Universal Gravitation equation correctly on your calculator.
You might not be given the value of the universal gravitational constant "G", but it is listed clearly on your yellow reference sheet.
Be careful with variable names:
G (uppercase) is the gravitational constant.
g (lowercase) is the acceleration due to gravity.
They are not interchangeable
Make sure you’re using the correct one based on the formula you're working with.
Tags
NGSS.HS-PS2-4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Answer explanation
Refer back to today’s note slides for guidance on how to enter scientific notation and set up the Universal Gravitation equation correctly on your calculator.
You might not be given the value of the universal gravitational constant "G", but it is listed clearly on your yellow reference sheet.
Be careful with variable names:
G (uppercase) is the gravitational constant.
g (lowercase) is the acceleration due to gravity.
They are not interchangeable
Make sure you’re using the correct one based on the formula you're working with.
Tags
NGSS.HS-PS2-4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.3.2
Researches have identified a world that they believe could be habitable should human space craft ever be able to make the trip. If Kepler-1649c is predicted to have the same mass as earth but have a radius that is larger than earth's, which statement about the acceleration from gravity on that planet would be true?
The acceleration from gravity on Kepler-1649c would be higher than earths because the radius increased.
The acceleration from gravity on Kepler-1649c should be higher because it is larger
The acceleration from gravity should be the same as on earth because the mass is the same.
The acceleration from gravity on Kepler-1649c would be lower than earths because the radius increased.
Answer explanation
Refer back to today’s note slides for guidance on how to enter scientific notation and set up the Universal Gravitation equation correctly on your calculator.
You might not be given the value of the universal gravitational constant "G", but it is listed clearly on your yellow reference sheet.
Be careful with variable names:
G (uppercase) is the gravitational constant.
g (lowercase) is the acceleration due to gravity.
They are not interchangeable
Make sure you’re using the correct one based on the formula you're working with.
Tags
NGSS.HS-PS2-4
7.
REORDER QUESTION
5 mins • 1 pt
3.3.3
Use your knowledge of Kepler's Laws and of Newton's Law of Universal Gravitation to rank the following points by how strong the force of gravity is on them. Place the location with the weakest force on the far left and the strongest force on the right.
<-Weak, Strong->
A
C
F
H
L
Answer explanation
Newton’s theory of gravity helped explain the patterns that Kepler observed in his laws of orbital motion. Kepler described what happens, but not why it happens. Gravity was the missing piece, the explanation for why those things happened.
Use gravity as your reasoning for why:
A planet accelerates and moves faster when it gets closer to the Sun, and
A planet slows down as it moves farther away.
The gravitational force is stronger when objects are closer together, and that stronger pull causes greater acceleration
Tags
NGSS.HS-PS2-4
NGSS.HS-ESS1-4
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