Question 1

The reason scientists believe the reflective bright nebulae contain more heavy materials than the emission bright nebulae is that___________ .

Accepted Answer

A)  they are blue, and that color is associated with carbon 
B)  they glow brighter than an energy emission source could produce 
C)  they are dimmer than a low density source could produce 
D)  they are brighter than a low density source could produce 
E)  they reflect more colors than the emission nebulae 
A)  they are blue, and that color is associated with carbon 
B)  they glow brighter than an energy emission source could produce 
C)  they are dimmer than a low density source could produce 
D)  they are brighter than a low density source could produce 
E)  they reflect more colors than the emission nebulae

Question 2

Our galaxy is called the___________ .

Accepted Answer

A)  Andromedia 
B)  Milky Way 
C)  Whirlpool 
D)  Black Eye 
A)  Andromedia 
B)  Milky Way 
C)  Whirlpool 
D)  Black Eye

Question 3

Briefly discuss stellar evolution. What forces are opposing one another throughout the life of a star and how do they influence the various stages in the life cycle of a star?

Accepted Answer

Stars form when dense pockets of molecul

Question 4

The red color of emission nebulae comes from the___________ .

Accepted Answer

A)  energy emission of hydrogen 
B)  conversion of ultraviolet light to visible light 
C)  energy emission of helium 
D)  energy emission of oxygen 
E)  conversion of infrared light to visible light 
A)  energy emission of hydrogen 
B)  conversion of ultraviolet light to visible light 
C)  energy emission of helium 
D)  energy emission of oxygen 
E)  conversion of infrared light to visible light

Question 5

The first stars formed about 300 million years after Big Bang in the most massive nebulae because___________ .

Accepted Answer

A)  all of the nebulae at that time were massive and it was not until much later that smaller nebulae formed 
B)  the massive nebulae had enough gravity to collapse and condense 
C)  only the massive nebulae had the material needed to make stars 
D)  the massive nebulae had enough gravity to attract star material early in the history of the universe 
E)  it took that long for enough matter to form to make a star 
A)  all of the nebulae at that time were massive and it was not until much later that smaller nebulae formed 
B)  the massive nebulae had enough gravity to collapse and condense 
C)  only the massive nebulae had the material needed to make stars 
D)  the massive nebulae had enough gravity to attract star material early in the history of the universe 
E)  it took that long for enough matter to form to make a star

Question 6

A star with the same color as another but 100 times brighter must be ___________.

Accepted Answer

A)  100 times colder 
B)  100 times closer 
C)  100 times hotter 
D)  100 times larger 
E)  none of the above 
A)  100 times colder 
B)  100 times closer 
C)  100 times hotter 
D)  100 times larger 
E)  none of the above

Question 7

The densest stars known to exist are ___________.

Accepted Answer

A)  neutron stars 
B)  white dwarfs 
C)  red dwarfs 
D)  black holes 
A)  neutron stars 
B)  white dwarfs 
C)  red dwarfs 
D)  black holes

Question 8

The hottest main- sequence stars are also the___________ .

Accepted Answer

A)  youngest 
B)  dimmest 
C)  reddest 
D)  most massive 
A)  youngest 
B)  dimmest 
C)  reddest 
D)  most massive

Question 9

Which main- sequence stars are the most massive?

Accepted Answer

A)  red 
B)  orange 
C)  yellow 
D)  blue 
A)  red 
B)  orange 
C)  yellow 
D)  blue

Question 10

Most stars are in this stage of evolution.

Accepted Answer

A)  black hole 
B)  red giant 
C)  main- sequence star 
D)  white dwarf 
A)  black hole 
B)  red giant 
C)  main- sequence star 
D)  white dwarf

Question 11

A neutron star theoretically will form from a supernovae collapse that ___________.

Accepted Answer

A)  converts the atomic nucleus to a small volume with high mass by expelling all neutrons 
B)  forms ions that bond electrostatically into very small volumes 
C)  compresses all atoms so that electrons are so close to the nucleus that all of the protons are converted to neutrons 
D)  fuses all of the atoms into super atoms with very high atomic numbers 
A)  converts the atomic nucleus to a small volume with high mass by expelling all neutrons 
B)  forms ions that bond electrostatically into very small volumes 
C)  compresses all atoms so that electrons are so close to the nucleus that all of the protons are converted to neutrons 
D)  fuses all of the atoms into super atoms with very high atomic numbers

Question 12

Which main- sequence stars are the least massive?

Accepted Answer

A)  red 
B)  orange 
C)  yellow 
D)  blue 
A)  red 
B)  orange 
C)  yellow 
D)  blue

Question 13

How do astronomers believe an irregular galaxy forms?

Accepted Answer

A)  They are young galaxies that have not yet developed a more regular form. 
B)  Several regular galaxies of different sizes merge. 
C)  They form when an elliptical and a spiral galaxy merge. 
D)  They are two or more galaxies that have not completed their merger. 
E)  They are regular galaxies that are distorted by the gravity field of a large nearby galaxy. 
A)  They are young galaxies that have not yet developed a more regular form. 
B)  Several regular galaxies of different sizes merge. 
C)  They form when an elliptical and a spiral galaxy merge. 
D)  They are two or more galaxies that have not completed their merger. 
E)  They are regular galaxies that are distorted by the gravity field of a large nearby galaxy.

Question 14

A star in which light cannot escape because of the immense gravitational pull is called an___________ .

Accepted Answer

A)  dark matter 
B)  supernova 
C)  red spiral 
D)  black hole 
A)  dark matter 
B)  supernova 
C)  red spiral 
D)  black hole

Question 15

Big Bang Theory suggests that prior to the Big Bang, the universe was___________ .

Accepted Answer

A)  a giant neutron star 
B)  a collapsed supernova 
C)  nothing 
D)  in a very hot and massive state 
A)  a giant neutron star 
B)  a collapsed supernova 
C)  nothing 
D)  in a very hot and massive state

Question 16

The temperature of a red giant increases rapidly because___________ .

Accepted Answer

A)  gravitational energy is converted to heat 
B)  friction from the collapse creates heat 
C)  endothermic chemical reactions occur 
D)  exothermic chemical reactions occur 
E)  fusion increases and gives off heat 
A)  gravitational energy is converted to heat 
B)  friction from the collapse creates heat 
C)  endothermic chemical reactions occur 
D)  exothermic chemical reactions occur 
E)  fusion increases and gives off heat

Question 17

Stars with a surface temperature 3000 K appear ___________in color.

Accepted Answer

A)  yellow 
B)  blue 
C)  white 
D)  red 
A)  yellow 
B)  blue 
C)  white 
D)  red

Question 18

The "true" brightness of a star is called its___________ magnitude.

Accepted Answer

A)  apparent 
B)  absolute 
C)  Doppler 
D)  galactic 
A)  apparent 
B)  absolute 
C)  Doppler 
D)  galactic

Question 19

Which color stars have the highest surface temperature?

Accepted Answer

A)  red 
B)  orange 
C)  yellow 
D)  blue 
A)  red 
B)  orange 
C)  yellow 
D)  blue

Question 20

The least massive main- sequence stars are___________ in color.

Accepted Answer

A)  red 
B)  blue 
C)  white 
D)  yellow 
A)  red 
B)  blue 
C)  white 
D)  yellow

Exam 24: Beyond Our Solar System

The reason scientists believe the reflective bright nebulae contain more heavy materials than the emission bright nebulae is that___________ .

Our galaxy is called the___________ .

Briefly discuss stellar evolution. What forces are opposing one another throughout the life of a star and how do they influence the various stages in the life cycle of a star?

The red color of emission nebulae comes from the___________ .

The first stars formed about 300 million years after Big Bang in the most massive nebulae because___________ .

A star with the same color as another but 100 times brighter must be ___________.

The densest stars known to exist are ___________.

The hottest main- sequence stars are also the___________ .

Which main- sequence stars are the most massive?

Most stars are in this stage of evolution.

A neutron star theoretically will form from a supernovae collapse that ___________.

Which main- sequence stars are the least massive?

How do astronomers believe an irregular galaxy forms?

A star in which light cannot escape because of the immense gravitational pull is called an___________ .

Big Bang Theory suggests that prior to the Big Bang, the universe was___________ .

The temperature of a red giant increases rapidly because___________ .

Stars with a surface temperature 3000 K appear ___________in color.

The "true" brightness of a star is called its___________ magnitude.

Which color stars have the highest surface temperature?

The least massive main- sequence stars are___________ in color.

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

Weathering, Soil, and Mass Movement

Running Water and Groundwater

Glaciers, Deserts, and Wind

Geologic Time

Earths Evolution Through Geologic Time

The Ocean Floor

Ocean Water and Ocean Life

The Dynamic Ocean

The Atmosphere: Composition, Structure, and Temperature

Moisture, Clouds, and Precipitation

Air Pressure and Wind

Weather Patterns and Severe Storms

World Climates and Global Climate Change

Origins of Modern Astronomy

Touring Our Solar System

Light, Telescopes, and the Sun

Filters