Question 1

Changing the direction of a moving body does not change its velocity.

Accepted Answer

A) True 
 B)False  False

Question 2

Using the law of gravity and the three laws of motion,Newton showed that the mass of a planet (like Jupiter)could be calculated from ...

Accepted Answer

A)  the distance of a satellite from Jupiter 
B)  how long it takes the satellite to orbit Jupiter once 
C)  a & b 
D)  none of the above 
A)  the distance of a satellite from Jupiter 
B)  how long it takes the satellite to orbit Jupiter once 
C)  a & b 
D)  none of the above C

Question 3

What is the escape velocity from the moon for a lunar landing module sitting on the moon's surface? Hints: Ve= square root of (2GM/r); the mass of the moon is 7.2*1022 kg; its radius is 1738 km; G = 6.67*10 - 11 N m2 kg - 2

Accepted Answer

A)  2.3 m/s 
B)  23 m/s 
C)  2.3 km/s 
D)  23 km/s 
E)  11 km/s 
A)  2.3 m/s 
B)  23 m/s 
C)  2.3 km/s 
D)  23 km/s 
E)  11 km/s C

Question 4

How often do spring tides occur?

Accepted Answer

A)  Twice a day 
B)  Twice a week 
C)  Twice a month 
D)  Twice a year 
A)  Twice a day 
B)  Twice a week 
C)  Twice a month 
D)  Twice a year

Question 5

The ____________________ of a particle is the mass we would measure if the particle were not moving.

Accepted Answer

The answer of The ____________________ of a particle is the...

Question 6

Once a theory has been tested thoroughly and is confidently believed by scientists it becomes a ____________________.

Accepted Answer

The answer of Once a theory has been tested thoroughly...

Question 7

According to Aristotle,which of the following would be an example of violent motion?

Accepted Answer

A)  an apple falling from a tree 
B)  a person pushing a car along the street 
C)  an arrow moving through the air after leaving the bow 
D)  warm air rising above hot pavement 
E)  a barrel rolling down a ramp 
A)  an apple falling from a tree 
B)  a person pushing a car along the street 
C)  an arrow moving through the air after leaving the bow 
D)  warm air rising above hot pavement 
E)  a barrel rolling down a ramp

Question 8

Spring tides occur

Accepted Answer

A)  at new moon and first quarter moon. 
B)  at first quarter and third quarter moons. 
C)  at new moon and full moon. 
D)  at third quarter and full moons. 
E)  at noon and midnight. 
A)  at new moon and first quarter moon. 
B)  at first quarter and third quarter moons. 
C)  at new moon and full moon. 
D)  at third quarter and full moons. 
E)  at noon and midnight.

Question 9

What is the circular velocity of an object orbiting Earth at a distance of 100,000 km from Earth's center? G = 6.67*10-11 N m2 kg-2

Accepted Answer

A)  2 m/s 
B)  20 m/s 
C)  200 m/s 
D)  2000 m/s 
E)  20,000 m/s 
A)  2 m/s 
B)  20 m/s 
C)  200 m/s 
D)  2000 m/s 
E)  20,000 m/s

Question 10

Aristotle believed that objects falling to the ground fell at a constant speed.

Accepted Answer

A) True 
 B)False

Question 11

Newton's first law of motion is expressed as follows ...

Accepted Answer

A)  An object with no force on it moves in a straight line with constant velocity. 
B)  An object with a force on it is accelerated in the direction of the force an amount inversely proportional to its mass and directly proportional to the size of the force. 
C)  For every action there is an equal and opposite reaction. 
D)  The force between two objects is directly proportional to the product of their masses and inversely proportional to the distance between them squared. 
A)  An object with no force on it moves in a straight line with constant velocity. 
B)  An object with a force on it is accelerated in the direction of the force an amount inversely proportional to its mass and directly proportional to the size of the force. 
C)  For every action there is an equal and opposite reaction. 
D)  The force between two objects is directly proportional to the product of their masses and inversely proportional to the distance between them squared.

Question 12

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 13

Which type of curve would accurately represent a closed orbit?

Accepted Answer

A)  ellipse 
B)  hyperbola 
C)  parabola 
D)  straight line 
A)  ellipse 
B)  hyperbola 
C)  parabola 
D)  straight line

Question 14

If the mass of the Earth decreased by a factor of two with no change in radius,your weight would

Accepted Answer

A)  increase by a factor of 4. 
B)  increase by a factor of 2. 
C)  stay the same. 
D)  decrease by a factor of 2 
E)  decrease by a factor of 4. 
A)  increase by a factor of 4. 
B)  increase by a factor of 2. 
C)  stay the same. 
D)  decrease by a factor of 2 
E)  decrease by a factor of 4.

Question 15

Newton's first law of motion was very similar to descriptions of motion given by ____________________.

Accepted Answer

The answer of Newton's first law of motion was very...

Question 16

According to the theory of general relativity,gravity is caused by

Accepted Answer

A)  the equivalence principle. 
B)  the change in mass of a moving body. 
C)  the curvature of space-time. 
D)  the constant speed of light. 
E)  none of the above. 
A)  the equivalence principle. 
B)  the change in mass of a moving body. 
C)  the curvature of space-time. 
D)  the constant speed of light. 
E)  none of the above.

Question 17

The ____ produce(s)tides on the Earth.

Accepted Answer

A)  moon alone 
B)  sun alone 
C)  both moon and sun 
A)  moon alone 
B)  sun alone 
C)  both moon and sun

Question 18

The ____________________ of the moon's orbit is the place where it is farthest from Earth.

Accepted Answer

The answer of The ____________________ of the moon's orbit is...

Question 19

When two objects of unequal mass orbit each other,the center of mass is

Accepted Answer

A)  at the center of the more massive object. 
B)  at the center of the least massive object. 
C)  half way between the centers of each object. 
D)  always closer to the less massive of the two objects. 
E)  always closer to the more massive of the two objects. 
A)  at the center of the more massive object. 
B)  at the center of the least massive object. 
C)  half way between the centers of each object. 
D)  always closer to the less massive of the two objects. 
E)  always closer to the more massive of the two objects.

Question 20

The equivalence principle can be illustrated by

Accepted Answer

A)  a person riding in an elevator. 
B)  a space capsule coasting through space at constant velocity. 
C)  the change in mass of a moving body. 
D)  the formation of energy by nuclear fusion. 
E)  the increase in the speed of light from a star as the light moves past the sun during a solar eclipse. 
A)  a person riding in an elevator. 
B)  a space capsule coasting through space at constant velocity. 
C)  the change in mass of a moving body. 
D)  the formation of energy by nuclear fusion. 
E)  the increase in the speed of light from a star as the light moves past the sun during a solar eclipse.

Exam 5: Gravity

Changing the direction of a moving body does not change its velocity.

Using the law of gravity and the three laws of motion,Newton showed that the mass of a planet (like Jupiter)could be calculated from ...

What is the escape velocity from the moon for a lunar landing module sitting on the moon's surface? Hints: Ve= square root of (2GM/r); the mass of the moon is 7.2*1022 kg; its radius is 1738 km; G = 6.67*10 - 11 N m2 kg - 2

How often do spring tides occur?

The ____________________ of a particle is the mass we would measure if the particle were not moving.

Once a theory has been tested thoroughly and is confidently believed by scientists it becomes a ____________________.

According to Aristotle,which of the following would be an example of violent motion?

Spring tides occur

What is the circular velocity of an object orbiting Earth at a distance of 100,000 km from Earth's center? G = 6.67*10-11 N m2 kg-2

Aristotle believed that objects falling to the ground fell at a constant speed.

Newton's first law of motion is expressed as follows ...

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

Which type of curve would accurately represent a closed orbit?

If the mass of the Earth decreased by a factor of two with no change in radius,your weight would

Newton's first law of motion was very similar to descriptions of motion given by ____________________.

According to the theory of general relativity,gravity is caused by

The ____ produce(s)tides on the Earth.

The ____________________ of the moon's orbit is the place where it is farthest from Earth.

When two objects of unequal mass orbit each other,the center of mass is

The equivalence principle can be illustrated by

Here and Now

A Users Guide to the Sky

Cycles of the Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

The Formation and Structure of Stars

Stellar Evolution

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Active Galaxies and Supermassive Black Holes

Modern Cosmology

The Origin of the Solar System

Earth: the Standard of Comparative Planetology

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus,neptune,and the Kuiper Belt

Meteorites,asteroids,and Comets

Astrobiology: Life on Other Worlds

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What is the escape velocity from the moon for a lunar landing module sitting on the moon's surface? Hints: V_e= square root of (2GM/r); the mass of the moon is 7.210²² kg; its radius is 1738 km; G = 6.6710 ^- ¹¹ N m² kg ^- ²

What is the circular velocity of an object orbiting Earth at a distance of 100,000 km from Earth's center? G = 6.67*10^-¹¹ N m² kg^-²