Quiz about Universal Gravitation

Question 1

What is gravitational force?

Accepted Answer

a force that attracts any object

Answer

a force that pushes any object

Answer

a force that shrinks any object

Answer

a force that enlarges anyobject

Question 2

If I double the mass of one object without changing anything else, What would happen to the gravitational force between that object and any other object?

Accepted Answer

Doubles

Answer

Quadruples

Answer

Cut in Half

Answer

$$\frac{1}{4}$$ as much

Question 3

Calculate the force of gravity (F) between two objects whose masses are m₁ = 100 kg and m₂ = 1000 kg if they are separared by a distance of d = 500 m.

Accepted Answer

2.67 * 10^-11 N

Answer

0.4 N

Answer

6.67 * 10^-11 N

Answer

1.3 * 10^-8 N

Question 4

Find the distance between two objects whose masses are m₁ = 4,500 kg, and m₂= 8,700 kg; if the gravitational force between them is F = 2.0 x 10^-8 N.

Accepted Answer

361.34 m

Answer

130565.25 m

Answer

0.19575 m

Answer

0.783 m

Question 5

Two factors effecting the magnitude of the force of gravity between 2 objects are...

Accepted Answer

mass and distance

Answer

mass and matter

Answer

distance and weight

Answer

weight and mass

Question 6

If I double the distance between two objects, what happens to their gravitational Force?

Accepted Answer

4x smaller

Answer

4x bigger

Answer

2x bigger

Answer

2x smaller

Question 7

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

Accepted Answer

less

Answer

more

Answer

same

Answer

dosen't matter

Question 8

The reason why ocean tides happen is

Accepted Answer

gravitational forces between the Earth and the moon.

Answer

Electrical forces between the sun and the moon

Answer

Magnetic forces between the Earth and the moon

Answer

Motion of the moon around the earth

Question 9

Force of gravity is directly proportional to

Accepted Answer

Mass

Answer

Weight

Answer

Distance

Answer

Time

Question 10

If the objects are closer to each other, the force of attraction ____________.

Accepted Answer

increases

Answer

no effect

Answer

decreases

Answer

disappear

Question 11

The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.

Accepted Answer

gravity

Answer

friction

Answer

a strong force

Answer

electromagnetic force

Question 12

The sun is the anchor point of our solar system because of

Accepted Answer

its huge mass

Answer

the gas Hydrogen

Answer

its small density

Answer

its location

Question 13

Ocean tides occur mainly because

Accepted Answer

of different gravitational pulls of the moon on opposite sides of Earth

Answer

water normally runs to the side of Earth away from the sun

Answer

of the gravitational pull of the sun on Earth

Answer

as Earth rotates it leaves the ocean water somewhat behind it

Question 14

Gravity attracts all objects towards one another.

Accepted Answer

True

Answer

False

Answer

It depends

Question 15

What states that "every object in the universe attracts every other object"?

Accepted Answer

Law of Universal Gravitation

Answer

Newton's First Law of Motion

Answer

My mother

Answer

Inertia & gravity

Question 16

Check all the true statements about the Law of Universal Gravitation.

Accepted Answer

All objects in the universe attract all other objects in the universe.

Accepted Answer

The force of attraction increases when mass(es) increase.

Accepted Answer

The force of attraction decreases when the distance between the masses increases.

Answer

Gravity can either attract or repel.

Question 17

If I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?

Accepted Answer

Doubles

Answer

Quadruples

Answer

Cut in Half

Answer

4x Smaller

Question 18

What happens to Gravitational force if I double both of the masses but don't change their distance?

Accepted Answer

4x bigger

Answer

doubles

Answer

half as big

Answer

4x smaller

Question 19

If the distance between two objects is halved, what happens to the gravitational force between them?

Accepted Answer

A) It becomes four times larger

Answer

B) It becomes half as large

Answer

C) It becomes four times smaller

Answer

D) It remains the same

Question 20

Which of the following best describes the Law of Universal Gravitation?

Accepted Answer

A) Every object in the universe attracts every other object with a force proportional to their masses and inversely proportional to the square of the distance between them.

Answer

B) Every object in the universe repels every other object with a force proportional to their masses and inversely proportional to the distance between them.

Answer

C) Every object in the universe attracts every other object with a force proportional to their masses and directly proportional to the distance between them.

Answer

D) Every object in the universe repels every other object with a force proportional to their masses and directly proportional to the square of the distance between them.

Question 21

Calculate the gravitational force between two objects with masses of 500 kg and 1500 kg separated by a distance of 200 m. (Use $$G = 6.67 imes 10^{-11} \, ext{N m}^2 ext{kg}^{-2}$$ )

Accepted Answer

A) $$1.25 imes 10^{-8} \, ext{N}$$

Answer

B) $$2.50 imes 10^{-8} \, ext{N}$$

Answer

C) $$3.75 imes 10^{-8} \, ext{N}$$

Answer

D) $$5.00 imes 10^{-8} \, ext{N}$$

Question 22

Which experiment would best demonstrate the concept of universal gravitation?

Accepted Answer

B) Measuring the force between two suspended masses in a vacuum chamber.

Answer

A) Dropping two different masses from the same height and observing their fall.

Answer

C) Observing the orbit of a satellite around Earth.

Answer

D) Calculating the weight of an object on different planets.

Question 23

What real-world application relies on the principles of universal gravitation?

Accepted Answer

B) The calculation of tides

Answer

A) The design of roller coasters

Answer

C) The functioning of a thermometer

Answer

D) The operation of a wind turbine

Universal Gravitation

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