The reason the moon does not fall into Earth is that ________

the moon has a sufficiently large orbital speed

Earth's gravitational field at the moon is weak

gravitational pull of other planets keeps the moon up

the moon has less mass than the Earth

Each of us weighs a tiny bit less on the ground floor of a skyscraper than we do on the top floor. One reason for this is that _______

the mass of the building attracts you upward slightly

the gravitational field is shielded inside the building

By what factor would your weight be multiplied if Earth's diameter were 1/4 as big and Earth's mass remained unchanged?

Nonsense! your weight would be reduced instead of being multiplied

The acceleration due to gravity ( g ), ______

depends on the Universal constant G

Gravitational field lines (vectors) show the _______

direction a mass would be accelerated

direction of the field at each point

The gravitational field strength at the center of the Earth is _______

smaller than on the surface but still larger than zero

The acceleration of gravity ( g ) refers to the ___

rate of acceleration of an object that is acted upon solely by gravity

force of gravity acting upon an object

acceleration of any object when acted upon by some net force

The acceleration of gravity on the surface of the Earth is 9.8 m/s/s. As one moves increasingly further from the surface of the Earth, the acceleration of gravity value _____

...impossible to tell without knowledge of the mass of the object.

The force of gravitation between any two objects is _________.

a force which is attractive for one object and repulsive for the other object.

an attractive force on Earth but neither attractive nor repulsive in space

an attractive force which is always balanced by a repulsive force to keep the objects from moving toward each other.

The force of gravitational attraction between the Sun and a planet is dependent upon _______ and ________.

radius of planet and mass of Sun

radius of Sun and mass of planet

The force of gravitational attraction between any two objects is ________.

inversely proportional to the square of the distances between their centers

directly proportional to the sum of their masses.

inversely proportional to the product of their masses.

directly proportional to distance between their centers

The acceleration of gravity (g) refers to ______.

rate of acceleration of an object which is acted upon solely by gravity

force of gravity acting upon an object

Which statement is true about the motion of planets about the sun?

The velocity vector is directed tangent to the elliptical path

The net force vector is at all times directed perpendicular to the velocity vector.

To keep the planet from escaping the sun's gravitational field, the net force vector is greatest when the planet is furthest from the sun.

none of these statements is true

Review: 12, 13, and 14

Physics

11th Grade - University

NGSS covered

Used 17+ times

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29 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Newton had the insight to see that the ______

moon always keeps one side toward Earth

moon orbits Earth

Force on the moon has the same nature as the force on the apple

none of the above

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Newton reasoned that the gravitational attraction between Earth and the moon must be _______

directly proportional to distance

reduced by distance squared

the same at all distances

independent of distance

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If the mass of the Earth increased, with no change in radius, your weight would ________

increase also

decrease

stay the same

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If the radius of the Earth decreased, with no change in mass, your weight would _______

increase

decrease

stay the same

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A very massive object A and a less massive object B move toward each other under the influence of mutual gravitation. Which force, if either, is greater?

The force on A

The force on B

Both forces are the same

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Suppose the gravitational force between two massive spheres is 10 N. If the distance between the spheres is cut in half, what is the force between the masses?

40 N

20 N

10 N

5 N

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The force of gravity acting on you will increase if you _________

burrow deep inside a planet

stand on a planet with a radius that is shrinking

both

none of the these

Tags

NGSS.HS-PS2-4

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Review: 12, 13, and 14

Newton had the insight to see that the ______

Newton reasoned that the gravitational attraction between Earth and the moon must be _______

If the mass of the Earth increased, with no change in radius, your weight would ________

If the radius of the Earth decreased, with no change in mass, your weight would _______

A very massive object A and a less massive object B move toward each other under the influence of mutual gravitation. Which force, if either, is greater?

Suppose the gravitational force between two massive spheres is 10 N. If the distance between the spheres is cut in half, what is the force between the masses?

The force of gravity acting on you will increase if you _________

The reason the moon does not fall into Earth is that ________

Each of us weighs a tiny bit less on the ground floor of a skyscraper than we do on the top floor. One reason for this is that _______

Which is more, the gravitational force between Earth and the moon, or between Earth and the sun?

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