Question 1

Which is the latest stage of a star?

Accepted Answer

A) Helium collects within the core. 
B) Carbon collects within the core. 
C) The surface of the star expands into a red giant. 
D) The star contracts into a blue giant. 
A) Helium collects within the core. 
B) Carbon collects within the core. 
C) The surface of the star expands into a red giant. 
D) The star contracts into a blue giant.

Question 2

Metals are relatively more abundant in

Accepted Answer

A) old stars. 
B) new stars. 
C) neither in particular 
A) old stars. 
B) new stars. 
C) neither in particular

Question 3

A supercluster is a

Accepted Answer

A) cluster of galactic clusters. 
B) very large local cluster. 
C) local cluster with at least 10,000 supergiant stars. 
D) local cluster with at least 500 supermassive black holes. 
A) cluster of galactic clusters. 
B) very large local cluster. 
C) local cluster with at least 10,000 supergiant stars. 
D) local cluster with at least 500 supermassive black holes.

Question 4

If the Sun collapsed to a black hole,the time required for the Earth to orbit the collapsed Sun would

Accepted Answer

A) increase. 
B) decrease. 
C) stay the same. 
A) increase. 
B) decrease. 
C) stay the same.

Question 5

The masses of stars are found by measurements of

Accepted Answer

A) light intensity. 
B) temperature. 
C) Doppler shifting. 
D) binaries. 
E) relative sizes. 
A) light intensity. 
B) temperature. 
C) Doppler shifting. 
D) binaries. 
E) relative sizes.

Question 6

Red giant stars are

Accepted Answer

A) close to exhausting their supply of hydrogen. 
B) have already exhausted their supply of hydrogen. 
C) are close to exhausting their supply of helium. 
D) have already exhausted their supply of helium. 
A) close to exhausting their supply of hydrogen. 
B) have already exhausted their supply of hydrogen. 
C) are close to exhausting their supply of helium. 
D) have already exhausted their supply of helium.

Question 7

The Milky Way is

Accepted Answer

A) a spiral galaxy. 
B) an elliptical galaxy. 
C) an irregular galaxy. 
D) a galaxy in the making. 
E) the remains of a galaxy that has run its life course. 
A) a spiral galaxy. 
B) an elliptical galaxy. 
C) an irregular galaxy. 
D) a galaxy in the making. 
E) the remains of a galaxy that has run its life course.

Question 8

Most of the stars in colliding galaxies

Accepted Answer

A) do not make contact with one another. 
B) coalesce into larger stars. 
C) exchange amounts of material in proportion to their masses. 
D) end up as binaries. 
E) undergo accelerated collapse. 
A) do not make contact with one another. 
B) coalesce into larger stars. 
C) exchange amounts of material in proportion to their masses. 
D) end up as binaries. 
E) undergo accelerated collapse.

Question 9

A white dwarf is a former

Accepted Answer

A) low-mass star. 
B) high-mass star. 
C) white giant. 
A) low-mass star. 
B) high-mass star. 
C) white giant.

Question 10

What prevents stars greater than about 100 times the Sun's mass from existing?

Accepted Answer

A) The rate of thermal expansion would overcome gravitational attraction leading to explosion. 
B) The gravitational attraction would overcome the rate of thermal expansion leading to a black hole. 
C) Fusion cannot take place at these higher mass levels. 
D) The gaseous material of the universe is too widely dispersed to allow for the formation of stars of this mass. 
A) The rate of thermal expansion would overcome gravitational attraction leading to explosion. 
B) The gravitational attraction would overcome the rate of thermal expansion leading to a black hole. 
C) Fusion cannot take place at these higher mass levels. 
D) The gaseous material of the universe is too widely dispersed to allow for the formation of stars of this mass.

Question 11

The H-R Diagram,an important tool of astronomers,relates stellar temperature to stellar

Accepted Answer

A) distance. 
B) mass. 
C) color. 
D) density. 
E) luminosity. 
A) distance. 
B) mass. 
C) color. 
D) density. 
E) luminosity.

Question 12

The North Star has very little apparent rotation in the night sky because

Accepted Answer

A) it lies directly above the Earth's axis of spin. 
B) it rotates in the same relative orbit as Earth. 
C) its rate of spin directly matches Earth's. 
D) the Oort cloud distorts the view of the naked eye. 
A) it lies directly above the Earth's axis of spin. 
B) it rotates in the same relative orbit as Earth. 
C) its rate of spin directly matches Earth's. 
D) the Oort cloud distorts the view of the naked eye.

Question 13

Compared to most stellar objects,quasars are more

Accepted Answer

A) distant. 
B) energetic. 
C) puzzling. 
D) all of these 
E) none of these 
A) distant. 
B) energetic. 
C) puzzling. 
D) all of these 
E) none of these

Question 14

The Large Megllanic Cloud is

Accepted Answer

A) a bright nebula within our galaxy. 
B) an irregular galaxy colliding with the Milky Way. 
C) the farthest known object visible to the naked eye in a clear night time sky. 
D) an unusually bright planetary nebula. 
A) a bright nebula within our galaxy. 
B) an irregular galaxy colliding with the Milky Way. 
C) the farthest known object visible to the naked eye in a clear night time sky. 
D) an unusually bright planetary nebula.

Question 15

Which is largest?

Accepted Answer

A) a galaxy 
B) a local group 
C) a Supercluster 
D) the observable universe 
A) a galaxy 
B) a local group 
C) a Supercluster 
D) the observable universe

Question 16

A radio signal emitted from Earth would take about

Accepted Answer

A) 4 years to leave our galaxy. 
B) 20,000 years to leave our galaxy. 
C) 80,000 years to leave our galaxy. 
D) 100,000 years to leave our galaxy. 
A) 4 years to leave our galaxy. 
B) 20,000 years to leave our galaxy. 
C) 80,000 years to leave our galaxy. 
D) 100,000 years to leave our galaxy.

Question 17

All of the stars we see at night with our unaided eyes are within

Accepted Answer

A) 10,000 light-years,which is a small portion of our galaxy. 
B) 100,000 light-years,which encompasses most all of our galaxy. 
C) 5 million light-years,which encompasses our local group. 
D) 14 billion light-years,which encompasses the observable universe. 
A) 10,000 light-years,which is a small portion of our galaxy. 
B) 100,000 light-years,which encompasses most all of our galaxy. 
C) 5 million light-years,which encompasses our local group. 
D) 14 billion light-years,which encompasses the observable universe.

Question 18

The event horizon of a black hole is

Accepted Answer

A) the surface below which no matter or energy can escape. 
B) the surface where light becomes trapped in a circular orbit around the black hole. 
C) the physical surface of the black hole. 
D) the point in time when a black hole comes into being. 
A) the surface below which no matter or energy can escape. 
B) the surface where light becomes trapped in a circular orbit around the black hole. 
C) the physical surface of the black hole. 
D) the point in time when a black hole comes into being.

Question 19

Our local group is situated

Accepted Answer

A) within a major supercluster. 
B) directly between two major superclusters. 
C) relatively distant from any supercluster. 
A) within a major supercluster. 
B) directly between two major superclusters. 
C) relatively distant from any supercluster.

Question 20

Stars to the upper right of the Hertzsprung-Russell diagram tend to be relatively

Accepted Answer

A) hot and blue. 
B) long lasting. 
C) huge. 
D) yellow and of average size. 
A) hot and blue. 
B) long lasting. 
C) huge. 
D) yellow and of average size.

Exam 27: Stars and Galaxies

Which is the latest stage of a star?

Metals are relatively more abundant in

A supercluster is a

If the Sun collapsed to a black hole,the time required for the Earth to orbit the collapsed Sun would

The masses of stars are found by measurements of

Red giant stars are

The Milky Way is

Most of the stars in colliding galaxies

A white dwarf is a former

What prevents stars greater than about 100 times the Sun's mass from existing?

The H-R Diagram,an important tool of astronomers,relates stellar temperature to stellar

The North Star has very little apparent rotation in the night sky because

Compared to most stellar objects,quasars are more

The Large Megllanic Cloud is

Which is largest?

A radio signal emitted from Earth would take about

All of the stars we see at night with our unaided eyes are within

The event horizon of a black hole is

Our local group is situated

Stars to the upper right of the Hertzsprung-Russell diagram tend to be relatively

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

The Structure of Space and Time

Prologue: The Nature of Science

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