Question 1

Examine the figure below.What causes molecular clouds to collapse?

Accepted Answer

A)  Conservation of charge 
B)  Self-gravity 
C)  Thermal energy 
D)  Radiation 
A)  Conservation of charge 
B)  Self-gravity 
C)  Thermal energy 
D)  Radiation B

Question 2

Why have astronomers found more Jupiter-sized planets at a distance of 1 AU around other stars than Earth-sized planets?

Accepted Answer

A)  A Jupiter-sized planet occults a larger area than an Earth-sized planet. 
B)  A Jupiter-sized planet exerts a larger gravitational force on the star than an Earth-sized planet,and the Doppler shift of the star is larger. 
C)  A Jupiter-sized planet shines brighter than an Earth-sized planet. 
D)  Earth-sized planets are much rarer than Jupiter-sized planets. 
A)  A Jupiter-sized planet occults a larger area than an Earth-sized planet. 
B)  A Jupiter-sized planet exerts a larger gravitational force on the star than an Earth-sized planet,and the Doppler shift of the star is larger. 
C)  A Jupiter-sized planet shines brighter than an Earth-sized planet. 
D)  Earth-sized planets are much rarer than Jupiter-sized planets. B

Question 3

Whether or not a planet is composed mostly of rock or gas is set by:

Accepted Answer

A)  its mass 
B)  its temperature 
C)  the distance from the star that it orbits 
D)  all of the above 
A)  its mass 
B)  its temperature 
C)  the distance from the star that it orbits 
D)  all of the above D

Question 4

Briefly explain the four different observational methods we use to detect extrasolar planets.Which has detected the largest number of extrasolar planets to date?

Accepted Answer

The four different observational methods

Question 5

How do astronomers explain the basic difference in composition between the inner planets and the outer planets?

Accepted Answer

The inner planets (Mercury,Venus,Earth,a

Question 6

What is the name for the type of cloud shown in the image below,and what type of light is needed to see into them?

Accepted Answer

They are called mole

Question 7

Explain why an ice skater spins faster when she pulls her arms in compared to when her arms are stretched straight out.

Accepted Answer

According to the conservation of angular

Question 8

How did the formation of our Moon differ from the formation of the Galilean moons of Jupiter?

Accepted Answer

Astronomers believe that the formation o

Question 9

The primary atmospheres of the planets are made mostly of:

Accepted Answer

A)  carbon and oxygen 
B)  hydrogen and helium 
C)  iron and nickel 
D)  nitrogen and argon 
A)  carbon and oxygen 
B)  hydrogen and helium 
C)  iron and nickel 
D)  nitrogen and argon

Question 10

Examine the figure below.What method of looking for extrasolar planets requires the planet to pass in front of the star?

Accepted Answer

A)  Radial velocity method 
B)  Transit method 
C)  Direct imaging 
A)  Radial velocity method 
B)  Transit method 
C)  Direct imaging

Question 11

All planets orbit the Sun in the same direction.

Accepted Answer

A) True 
 B)False

Question 12

What is the best method to use to detect Earth-sized extra-solar planets with the telescopes and instrumentation that exist today?

Accepted Answer

A)  Doppler shift 
B)  Transit 
C)  Direct imaging 
D)  Microlensing 
A)  Doppler shift 
B)  Transit 
C)  Direct imaging 
D)  Microlensing

Question 13

Comets and asteroids are:

Accepted Answer

A)  other names for moons of the planets 
B)  primarily located within 1 AU of the Sun 
C)  all more massive than Earth's Moon 
D)  material left over from the formation of the planets 
A)  other names for moons of the planets 
B)  primarily located within 1 AU of the Sun 
C)  all more massive than Earth's Moon 
D)  material left over from the formation of the planets

Question 14

In the smaller nebulae,as smaller particles collide and stick together,forming larger particles,their self-gravity prevents them from breaking apart,regardless of the strength of the collision.

Accepted Answer

A) True 
 B)False

Question 15

The borderline between the most massive planet and the least massive brown dwarf occurs at:

Accepted Answer

A)  1 Jupiter mass 
B)  13 Jupiter masses 
C)  42 Jupiter masses 
D)  80 Jupiter masses 
A)  1 Jupiter mass 
B)  13 Jupiter masses 
C)  42 Jupiter masses 
D)  80 Jupiter masses

Question 16

The angular momentum of a planet depends on its mass and its distance from the Sun.

Accepted Answer

A) True 
 B)False

Question 17

The solid form of a volatile material is generally referred to as a(n):

Accepted Answer

A)  metal 
B)  silicate 
C)  rock 
D)  ice 
A)  metal 
B)  silicate 
C)  rock 
D)  ice

Question 18

What is the difference between refractory and volatile materials?

Accepted Answer

Refractory materials are capab

Question 19

Approximately how massive are nearly all the extrasolar planets that have been discovered thus far,and how is this related to the way in which we detect them?

Accepted Answer

They are all about Neptune-siz

Question 20

Explain the two primary reasons why the inner solar nebula was hotter than the outer solar nebula.

Accepted Answer

The inner solar nebula was hotter than t

Examine the figure below.What causes molecular clouds to collapse?

Why have astronomers found more Jupiter-sized planets at a distance of 1 AU around other stars than Earth-sized planets?

Whether or not a planet is composed mostly of rock or gas is set by:

Briefly explain the four different observational methods we use to detect extrasolar planets.Which has detected the largest number of extrasolar planets to date?

How do astronomers explain the basic difference in composition between the inner planets and the outer planets?

What is the name for the type of cloud shown in the image below,and what type of light is needed to see into them?

Explain why an ice skater spins faster when she pulls her arms in compared to when her arms are stretched straight out.

How did the formation of our Moon differ from the formation of the Galilean moons of Jupiter?

The primary atmospheres of the planets are made mostly of:

Examine the figure below.What method of looking for extrasolar planets requires the planet to pass in front of the star?

All planets orbit the Sun in the same direction.

What is the best method to use to detect Earth-sized extra-solar planets with the telescopes and instrumentation that exist today?

Comets and asteroids are:

In the smaller nebulae,as smaller particles collide and stick together,forming larger particles,their self-gravity prevents them from breaking apart,regardless of the strength of the collision.

The borderline between the most massive planet and the least massive brown dwarf occurs at:

The angular momentum of a planet depends on its mass and its distance from the Sun.

The solid form of a volatile material is generally referred to as a(n):

What is the difference between refractory and volatile materials?

Approximately how massive are nearly all the extrasolar planets that have been discovered thus far,and how is this related to the way in which we detect them?

Explain the two primary reasons why the inner solar nebula was hotter than the outer solar nebula.

Our Place in the Universe

Patterns in the Skymotions of Earth

Laws of Motion

Light and Telescopes

Terrestrial Worlds in the Inner Solar System

Atmospheres of Venus, Earth, and Mars

The Giant Planets

Small Bodies of the Solar System

Measuring the Stars

Our Star: The Sun

Evolution of Low-Mass Stars

Evolution of High-Mass Stars

The Expansion of Space

The Realm of the Galaxies

Our Galaxy: The Milky Way

Modern Cosmology and the Origin of Structure

Life in the Universe

Filters

Exam 5: The Formation of Stars and Planets

Examine the figure below.What causes molecular clouds to collapse?

Why have astronomers found more Jupiter-sized planets at a distance of 1 AU around other stars than Earth-sized planets?

Whether or not a planet is composed mostly of rock or gas is set by:

Briefly explain the four different observational methods we use to detect extrasolar planets.Which has detected the largest number of extrasolar planets to date?

How do astronomers explain the basic difference in composition between the inner planets and the outer planets?

What is the name for the type of cloud shown in the image below,and what type of light is needed to see into them?

Explain why an ice skater spins faster when she pulls her arms in compared to when her arms are stretched straight out.

How did the formation of our Moon differ from the formation of the Galilean moons of Jupiter?

The primary atmospheres of the planets are made mostly of:

Examine the figure below.What method of looking for extrasolar planets requires the planet to pass in front of the star?

All planets orbit the Sun in the same direction.

What is the best method to use to detect Earth-sized extra-solar planets with the telescopes and instrumentation that exist today?

Comets and asteroids are:

In the smaller nebulae,as smaller particles collide and stick together,forming larger particles,their self-gravity prevents them from breaking apart,regardless of the strength of the collision.

The borderline between the most massive planet and the least massive brown dwarf occurs at:

The angular momentum of a planet depends on its mass and its distance from the Sun.

The solid form of a volatile material is generally referred to as a(n):

What is the difference between refractory and volatile materials?

Approximately how massive are nearly all the extrasolar planets that have been discovered thus far,and how is this related to the way in which we detect them?

Explain the two primary reasons why the inner solar nebula was hotter than the outer solar nebula.

Our Place in the Universe

Patterns in the Skymotions of Earth

Laws of Motion

Light and Telescopes

Terrestrial Worlds in the Inner Solar System

Atmospheres of Venus, Earth, and Mars

The Giant Planets

Small Bodies of the Solar System

Measuring the Stars

Our Star: The Sun

Evolution of Low-Mass Stars

Evolution of High-Mass Stars

The Expansion of Space

The Realm of the Galaxies

Our Galaxy: The Milky Way

Modern Cosmology and the Origin of Structure

Life in the Universe

Filters