Question 1

The force due to the gravity between two objects depends on the ____,

Accepted Answer

A)  combined mass and velocity of both objects 
B)  mass of each object and the distance between them 
C)  distance of each object from Earth and distance between them 
D)  speed of light and the distance of each object from Earth 
E)  mass of each object and the speed of light 
A)  combined mass and velocity of both objects 
B)  mass of each object and the distance between them 
C)  distance of each object from Earth and distance between them 
D)  speed of light and the distance of each object from Earth 
E)  mass of each object and the speed of light B

Question 2

An object's momentum is equal to its ____.

Accepted Answer

A)  acceleration multiplied by its mass 
B)  acceleration divided by its weight 
C)  velocity multiplied by the gravitational constant 
D)  velocity multiplied by its mass 
E)  velocity divided by its weight 
A)  acceleration multiplied by its mass 
B)  acceleration divided by its weight 
C)  velocity multiplied by the gravitational constant 
D)  velocity multiplied by its mass 
E)  velocity divided by its weight D

Question 3

An object in a closed orbit under the influence of an attractive force that follows the inverse square law must behave a(n) _______________ path.

Accepted Answer

elliptical

Question 4

Mutual gravitation is ____.

Accepted Answer

A)  a type of force that acts on an object moving at constant speed 
B)  the acceleration of an object in the absence of a force 
C)  a property of all matter in the universe 
D)  the limit of gravitational force from one object to another 
E)  a type of force that repels surrounding particles 
A)  a type of force that acts on an object moving at constant speed 
B)  the acceleration of an object in the absence of a force 
C)  a property of all matter in the universe 
D)  the limit of gravitational force from one object to another 
E)  a type of force that repels surrounding particles

Question 5

How can tidal forces affect the rotation of celestial bodies and their orbital motion?

Accepted Answer

Earth rotates eastward, and friction wit

Question 6

The velocity required to escape an astronomical body is known as the _______________.

Accepted Answer

The answer of The velocity required to escape an astronomical...

Question 7

Galileo determined that ____.

Accepted Answer

A)  heavy objects accelerate at a slower speed than lighter objects 
B)  lighter objects accelerate at a slower speed than heavier objects 
C)  an object's acceleration is due to the height from which it is dropped 
D)  all objects fall at a constant speed 
E)  all objects fall at a constant acceleration 
A)  heavy objects accelerate at a slower speed than lighter objects 
B)  lighter objects accelerate at a slower speed than heavier objects 
C)  an object's acceleration is due to the height from which it is dropped 
D)  all objects fall at a constant speed 
E)  all objects fall at a constant acceleration

Question 8

One of the first tests of the general theory of relativity was the ____.

Accepted Answer

A)  description of the orbit of the moon 
B)  determination of the speed of light as a constant 
C)  change in mass of a particle moving at a high speed 
D)  demonstration of a hammer and a feather falling at the same rate on the moon 
E)  determination of the rate of advance of the perihelion of Mercury's orbit 
A)  description of the orbit of the moon 
B)  determination of the speed of light as a constant 
C)  change in mass of a particle moving at a high speed 
D)  demonstration of a hammer and a feather falling at the same rate on the moon 
E)  determination of the rate of advance of the perihelion of Mercury's orbit

Question 9

A(n) ____ orbit is one where the orbiting object is always above the same location on Earth's surface.

Accepted Answer

A)  closed 
B)  elliptical 
C)  geosynchronous 
D)  hyperbolic 
E)  parabolic 
A)  closed 
B)  elliptical 
C)  geosynchronous 
D)  hyperbolic 
E)  parabolic

Question 10

The apparent positions of stars around the sun during an eclipse have been used to prove the general theory of relativity.

Accepted Answer

A) True 
 B)False

Question 11

_______________ occur when tides caused by the Sun and Moon partially cancel out.

Accepted Answer

The answer of _______________ occur when tides caused by the...

Question 12

Spring tides occur ____.

Accepted Answer

A)  only during spring months 
B)  when high tides are unusually low and low tides are unusually high 
C)  when high tides and low tides are unusually low 
D)  when high tides are unusually high and low tides are unusually low 
E)  simultaneously with neap tides 
A)  only during spring months 
B)  when high tides are unusually low and low tides are unusually high 
C)  when high tides and low tides are unusually low 
D)  when high tides are unusually high and low tides are unusually low 
E)  simultaneously with neap tides

Question 13

The first postulate of special relativity states that ____.

Accepted Answer

A)  observers can always detect their uniform motion relative to other objects 
B)  observers can never detect their uniform motion except relative to other objects 
C)  the speed of light is constant regardless of location 
D)  the speed of light in a vacuum is constant 
E)  energy equals mass multiplied by the speed of light, squared 
A)  observers can always detect their uniform motion relative to other objects 
B)  observers can never detect their uniform motion except relative to other objects 
C)  the speed of light is constant regardless of location 
D)  the speed of light in a vacuum is constant 
E)  energy equals mass multiplied by the speed of light, squared

Question 14

Figure 5-15 Consider the accompanying figure. Due to the curvature of space-time by the sun, light from stars that pass near the edge of the sun will ____.

Accepted Answer

A)  be bent so that the stars appear further from the edge of the sun 
B)  be bent so that the stars appear closer to the edge of the sun 
C)  be bent so that the stars are no longer visible 
D)  be bent so that the stars will appear intermittently 
E)  not be affected by the curvature of space-time 
A)  be bent so that the stars appear further from the edge of the sun 
B)  be bent so that the stars appear closer to the edge of the sun 
C)  be bent so that the stars are no longer visible 
D)  be bent so that the stars will appear intermittently 
E)  not be affected by the curvature of space-time

Question 15

Newton concluded that some force must act on the Moon because ____.

Accepted Answer

A)  a force is needed to pull the Moon away from straight-line motion 
B)  a force is needed to pull the Moon outward 
C)  a force is needed to keep the Moon in motion 
D)  the Moon has at a constant velocity 
E)  the Moon has a constant acceleration 
A)  a force is needed to pull the Moon away from straight-line motion 
B)  a force is needed to pull the Moon outward 
C)  a force is needed to keep the Moon in motion 
D)  the Moon has at a constant velocity 
E)  the Moon has a constant acceleration

Question 16

Explain why the term acceleration is important to the first postulate of special relativity.

Accepted Answer

The first postulate states that the laws

Question 17

Describe two experiments that provide evidence of space-time curvature by the presence of a mass.

Accepted Answer

Two key experiments confirmed that space

Question 18

What is an example of the conservation of angular momentum?

Accepted Answer

A)  A volleyball player serves a ball and it follows a parabolic path. 
B)  A baseball player strikes the ball with the bat 
C)  A cross-country skier accelerates as she moves in a straight line 
D)  A skateboarder maintains the same velocity in the same direction 
E)  A diver brings his arms and legs closer to his body 
A)  A volleyball player serves a ball and it follows a parabolic path. 
B)  A baseball player strikes the ball with the bat 
C)  A cross-country skier accelerates as she moves in a straight line 
D)  A skateboarder maintains the same velocity in the same direction 
E)  A diver brings his arms and legs closer to his body

Question 19

The M oon pulls more strongly on Earth's near and far side than on its center.

Accepted Answer

A) True 
 B)False

Question 20

How does gravity explain the presence of the tides we experience on Earth?

Accepted Answer

Tides are caused by small differences in

Exam 5: Gravity

The force due to the gravity between two objects depends on the ____,

An object's momentum is equal to its ____.

An object in a closed orbit under the influence of an attractive force that follows the inverse square law must behave a(n) _______________ path.

Mutual gravitation is ____.

How can tidal forces affect the rotation of celestial bodies and their orbital motion?

The velocity required to escape an astronomical body is known as the _______________.

Galileo determined that ____.

One of the first tests of the general theory of relativity was the ____.

A(n) ____ orbit is one where the orbiting object is always above the same location on Earth's surface.

The apparent positions of stars around the sun during an eclipse have been used to prove the general theory of relativity.

_______________ occur when tides caused by the Sun and Moon partially cancel out.

Spring tides occur ____.

The first postulate of special relativity states that ____.

Figure 5-15 Consider the accompanying figure. Due to the curvature of space-time by the sun, light from stars that pass near the edge of the sun will ____.

Newton concluded that some force must act on the Moon because ____.

Explain why the term acceleration is important to the first postulate of special relativity.

Describe two experiments that provide evidence of space-time curvature by the presence of a mass.

What is an example of the conservation of angular momentum?

The M oon pulls more strongly on Earth's near and far side than on its center.

How does gravity explain the presence of the tides we experience on Earth?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

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