Question 1

____________________ is a description of the Ptolemaic model of the solar system.

Accepted Answer

The answer of ____________________ is a description of the Ptolemaic...

Question 2

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 3

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 m3.kg-1.s-2; MEarth = 5.98*1024kg

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 4

The orbit of the planet Jupiter is an ellipse with the sun at one focus. What is located at the other focus?

Accepted Answer

A)  the asteroid belt 
B)  Earth 
C)  Saturn 
D)  Jupiter 
E)  nothing 
A)  the asteroid belt 
B)  Earth 
C)  Saturn 
D)  Jupiter 
E)  nothing

Question 5

Ptolemy's model of the universe

Accepted Answer

A)  was heliocentric. 
B)  included elliptical orbits. 
C)  contained epicycles. 
D)  all of the above. 
E)  none of the above. 
A)  was heliocentric. 
B)  included elliptical orbits. 
C)  contained epicycles. 
D)  all of the above. 
E)  none of the above.

Question 6

How did Tycho Brahe's model of the universe differ from that of Ptolemy? How did Tycho Brahe's model of the universe differ from that of Copernicus?

Accepted Answer

Tycho Brahe, a Danish nobleman and astro

Question 7

The neap tides can only occur when the moon's position is at or near one of its orbital nodes.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following people did NOT accept a heliocentric model for the universe?

Accepted Answer

A)  Kepler 
B)  Copernicus 
C)  Tycho 
D)  Galileo 
E)  Newton 
A)  Kepler 
B)  Copernicus 
C)  Tycho 
D)  Galileo 
E)  Newton

Question 9

The first observations of objects in the solar system that orbited neither the sun nor Earth were made by ____________________.

Accepted Answer

The answer of The first observations of objects in the...

Question 10

The book "De Revolutionibus Orbium Coelestium"

Accepted Answer

A)  describes how Galileo's observations and Kepler's calculations proved the Copernican theory. 
B)  describes the construction of Galileo's telescope and his observations. 
C)  is a dialog written to convince the general public of the merits of the Copernican theory. 
D)  first described the Copernican theory. 
E)  describes the Tychonian theory. 
A)  describes how Galileo's observations and Kepler's calculations proved the Copernican theory. 
B)  describes the construction of Galileo's telescope and his observations. 
C)  is a dialog written to convince the general public of the merits of the Copernican theory. 
D)  first described the Copernican theory. 
E)  describes the Tychonian theory.

Question 11

The ____________________ Tables were based on a heliocentric model of the universe and used elliptical orbits for the planets.

Accepted Answer

The answer of The ____________________ Tables were based on a...

Question 12

The semimajor axis of an ellipse is

Accepted Answer

A)  the ratio of the longest diameter of the ellipse to that of the shortest diameter of the ellipse. 
B)  half the length of the shortest diameter of the ellipse. 
C)  half the length of the longest diameter of the ellipse. 
D)  the distance between the two foci of the ellipse. 
E)  the ratio of the distance between the two foci to the length of half the longest diameter of the ellipse. 
A)  the ratio of the longest diameter of the ellipse to that of the shortest diameter of the ellipse. 
B)  half the length of the shortest diameter of the ellipse. 
C)  half the length of the longest diameter of the ellipse. 
D)  the distance between the two foci of the ellipse. 
E)  the ratio of the distance between the two foci to the length of half the longest diameter of the ellipse.

Question 13

The purpose of using epicycles and deferents to explain the motion of the planets in the night sky was to account for

Accepted Answer

A)  prograde motion. 
B)  Mercury's and Venus's limited angular distance from the sun. 
C)  retrograde motion. 
D)  non-uniform speed of the planets in their orbits. 
E)  precession of the equinoxes. 
A)  prograde motion. 
B)  Mercury's and Venus's limited angular distance from the sun. 
C)  retrograde motion. 
D)  non-uniform speed of the planets in their orbits. 
E)  precession of the equinoxes.

Question 14

The greatest inaccuracy in Copernicus's model of the solar system was that the planets

Accepted Answer

A)  traveled in circular orbits with uniform motion. 
B)  traveled on epicycles whose centers followed orbits around the sun. 
C)  traveled in elliptical orbits. 
D)  were allowed to travel backwards in their orbits. 
E)  orbited the sun. 
A)  traveled in circular orbits with uniform motion. 
B)  traveled on epicycles whose centers followed orbits around the sun. 
C)  traveled in elliptical orbits. 
D)  were allowed to travel backwards in their orbits. 
E)  orbited the sun.

Question 15

Describe one observation that would disprove the Ptolemaic model and explain why it would conflict with the model.

Accepted Answer

The answer of Describe one observation that would disprove the...

Question 16

Parallax is the apparent change in location of an object due to the motion of the observer.

Accepted Answer

A) True 
 B)False

Question 17

Why were Galileo's telescopic observations of the phases of Venus critical evidence in favor of the Copernican theory?

Accepted Answer

The answer of Why were Galileo's telescopic observations of the...

Question 18

Kepler's second law implies that

Accepted Answer

A)  a planet should move at its greatest speed when it is closest to the sun. 
B)  the most massive planets will have the greatest speed in their orbits. 
C)  the speed of a planet in its orbit depends on the size of the epicycle. 
D)  the mass of the planet determines how far the planet is from the sun. 
E)  the deferent and the epicycle have to be attached to the sun and not Earth. 
A)  a planet should move at its greatest speed when it is closest to the sun. 
B)  the most massive planets will have the greatest speed in their orbits. 
C)  the speed of a planet in its orbit depends on the size of the epicycle. 
D)  the mass of the planet determines how far the planet is from the sun. 
E)  the deferent and the epicycle have to be attached to the sun and not Earth.

Question 19

The force of gravity from one object extends to infinity never going to zero. When we say that gravitation is universal we mean that

Accepted Answer

A)  the Earth exerts gravitational force on objects on its surface. 
B)  the Earth exerts a gravitational force on its moon and vice versa. 
C)  the Earth, moon, and sun exert gravitational forces on each other. 
D)  all material objects in the universe exert gravitational forces on one another. 
A)  the Earth exerts gravitational force on objects on its surface. 
B)  the Earth exerts a gravitational force on its moon and vice versa. 
C)  the Earth, moon, and sun exert gravitational forces on each other. 
D)  all material objects in the universe exert gravitational forces on one another.

Question 20

How can tidal forces affect the rotation of celestial bodies and their orbital motion? Hint: Consider Earth and the moon.

Accepted Answer

Tidal forces can affect the rotation of

____________________ is a description of the Ptolemaic model of the solar system.

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

What is the circular velocity of an object orbiting Earth at a distance of 100,000 km from Earth's center? G = 6.6710^-¹¹ m³.kg^-¹.s^-²; M_Earth = 5.9810²⁴kg

The orbit of the planet Jupiter is an ellipse with the sun at one focus. What is located at the other focus?

Ptolemy's model of the universe

How did Tycho Brahe's model of the universe differ from that of Ptolemy? How did Tycho Brahe's model of the universe differ from that of Copernicus?

The neap tides can only occur when the moon's position is at or near one of its orbital nodes.

Which of the following people did NOT accept a heliocentric model for the universe?

The first observations of objects in the solar system that orbited neither the sun nor Earth were made by ____________________.

The book "De Revolutionibus Orbium Coelestium"

The ____________________ Tables were based on a heliocentric model of the universe and used elliptical orbits for the planets.

The semimajor axis of an ellipse is

The purpose of using epicycles and deferents to explain the motion of the planets in the night sky was to account for

The greatest inaccuracy in Copernicus's model of the solar system was that the planets

Describe one observation that would disprove the Ptolemaic model and explain why it would conflict with the model.

Parallax is the apparent change in location of an object due to the motion of the observer.

Why were Galileo's telescopic observations of the phases of Venus critical evidence in favor of the Copernican theory?

Kepler's second law implies that

The force of gravity from one object extends to infinity never going to zero. When we say that gravitation is universal we mean that

How can tidal forces affect the rotation of celestial bodies and their orbital motion? Hint: Consider Earth and the moon.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 4: The Origin of Modern Astronomy

____________________ is a description of the Ptolemaic model of the solar system.

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

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 m3.kg-1.s-2; MEarth = 5.98*1024kg

The orbit of the planet Jupiter is an ellipse with the sun at one focus. What is located at the other focus?

Ptolemy's model of the universe

How did Tycho Brahe's model of the universe differ from that of Ptolemy? How did Tycho Brahe's model of the universe differ from that of Copernicus?

The neap tides can only occur when the moon's position is at or near one of its orbital nodes.

Which of the following people did NOT accept a heliocentric model for the universe?

The first observations of objects in the solar system that orbited neither the sun nor Earth were made by ____________________.

The book "De Revolutionibus Orbium Coelestium"

The ____________________ Tables were based on a heliocentric model of the universe and used elliptical orbits for the planets.

The semimajor axis of an ellipse is

The purpose of using epicycles and deferents to explain the motion of the planets in the night sky was to account for

The greatest inaccuracy in Copernicus's model of the solar system was that the planets

Describe one observation that would disprove the Ptolemaic model and explain why it would conflict with the model.

Parallax is the apparent change in location of an object due to the motion of the observer.

Why were Galileo's telescopic observations of the phases of Venus critical evidence in favor of the Copernican theory?

Kepler's second law implies that

The force of gravity from one object extends to infinity never going to zero. When we say that gravitation is universal we mean that

How can tidal forces affect the rotation of celestial bodies and their orbital motion? Hint: Consider Earth and the moon.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

What is the circular velocity of an object orbiting Earth at a distance of 100,000 km from Earth's center? G = 6.6710^-¹¹ m³.kg^-¹.s^-²; M_Earth = 5.9810²⁴kg