Question 1

Possibly the most cataclysmic event associated with the death of a star is the ________.

Accepted Answer

The answer of Possibly the most cataclysmic event associated with...

Question 2

Which of the following is not true of first generation stars?

Accepted Answer

A) They are very dense. 
B) They are massive. 
C) They are composed primarily of hydrogen. 
D) They are short-lived. 
E) They have violent,explosive deaths. 
A) They are very dense. 
B) They are massive. 
C) They are composed primarily of hydrogen. 
D) They are short-lived. 
E) They have violent,explosive deaths.

Question 3

How do astronomers believe an irregular galaxy forms?

Accepted Answer

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

Question 4

What was Hubble's major contribution to Cosmology?

Accepted Answer

A) He identified Cepheid Variable stars. 
B) He measured the size of the universe. 
C) He identified numerous new galaxies outside the Milky Way. 
D) He developed a new method for measuring the absolute magnitude of stars. 
E) He proved the Big Bang Theory. 
A) He identified Cepheid Variable stars. 
B) He measured the size of the universe. 
C) He identified numerous new galaxies outside the Milky Way. 
D) He developed a new method for measuring the absolute magnitude of stars. 
E) He proved the Big Bang Theory.

Question 5

The distance light travels in a year,called a(n)________,is used by astronomers to measure stellar distances.

Accepted Answer

The answer of The distance light travels in a year,called...

Question 6

The final stage for a star which is as massive as the Sun is a ________.

Accepted Answer

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

Question 7

Evidence for the existence of dark matter includes ________.

Accepted Answer

A) the observation that Mercury rotates about the Sun faster than Pluto 
B) the observation that the universe is not expanding as fast as predicted by Big Bang Theory 
C) the observation that stars near the center of galaxies do not rotate as fast as expected 
D) the observation that the universe appears to be slowing down 
A) the observation that Mercury rotates about the Sun faster than Pluto 
B) the observation that the universe is not expanding as fast as predicted by Big Bang Theory 
C) the observation that stars near the center of galaxies do not rotate as fast as expected 
D) the observation that the universe appears to be slowing down

Question 8

How do we calculate or determine the distances to stars? What units do we use and what are the limitations (if any)of the method used for such calculations?

Accepted Answer

The method of measuring distance to star

Question 9

The densest stars known to exist are ________.

Accepted Answer

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

Question 10

A red star is ________ our Sun.

Accepted Answer

A) hotter and smaller than 
B) hotter and larger than 
C) colder and larger than 
D) colder and smaller than 
E) approximately the same temperature and size as 
A) hotter and smaller than 
B) hotter and larger than 
C) colder and larger than 
D) colder and smaller than 
E) approximately the same temperature and size as

Question 11

A red giant has ________.

Accepted Answer

A) a hydrogen-rich core 
B) a helium-rich core 
C) an iron-rich core 
D) no outer shell 
E) high gas pressure 
A) a hydrogen-rich core 
B) a helium-rich core 
C) an iron-rich core 
D) no outer shell 
E) high gas pressure

Question 12

The least massive main-sequence stars are blue in color.

Accepted Answer

A) True 
 B)False

Question 13

The hottest main-sequence stars are also the most massive.

Accepted Answer

A) True 
 B)False

Question 14

What two elements formed first?

Accepted Answer

A) electrons and protons 
B) hydrogen and oxygen 
C) helium and oxygen 
D) helium and hydrogen 
E) protons and neutrons 
A) electrons and protons 
B) hydrogen and oxygen 
C) helium and oxygen 
D) helium and hydrogen 
E) protons and neutrons

Question 15

Spiral galaxies tend to resemble a pinwheel because ________.

Accepted Answer

A) stars in the center of the galaxy are moving faster than the ones on the outer edges 
B) stars are moving from the center to the edges of the galaxy 
C) the barred structures form twisted pathways that distort the flow patterns 
D) the stars in the center are very old and large while the outer edges of the galaxy contain the youngest and smallest stars 
E) stars in the center of galaxy are moving more slowly than the ones on the outer edges. 
A) stars in the center of the galaxy are moving faster than the ones on the outer edges 
B) stars are moving from the center to the edges of the galaxy 
C) the barred structures form twisted pathways that distort the flow patterns 
D) the stars in the center are very old and large while the outer edges of the galaxy contain the youngest and smallest stars 
E) stars in the center of galaxy are moving more slowly than the ones on the outer edges.

Question 16

What was the test of the Big Bang Hypothesis discussed in your text?

Accepted Answer

A) The universe should be expanding. 
B) There should be more expansion in older galaxies than in young ones. 
C) We should be able to model how the galaxies have moved and reconstruct the original explosion. 
D) We should be able to detect remnants of the initial heat of the universe. 
E) We should be able to measure how atoms have changed through fusion since the original explosion. 
A) The universe should be expanding. 
B) There should be more expansion in older galaxies than in young ones. 
C) We should be able to model how the galaxies have moved and reconstruct the original explosion. 
D) We should be able to detect remnants of the initial heat of the universe. 
E) We should be able to measure how atoms have changed through fusion since the original explosion.

Question 17

Why did Hubble think the Cepheid variables he saw in "Fuzzy Patches" were outside the milky way?

Accepted Answer

A) They were dim. 
B) They were small. 
C) Their brightness varied. 
D) They had a red shift character. 
A) They were dim. 
B) They were small. 
C) Their brightness varied. 
D) They had a red shift character.

Question 18

Balance for a main sequence star is achieved when ________.

Accepted Answer

A) nuclear fusion and fission occur at the same rate 
B) gas pressure matches temperature 
C) temperature matches the rate of nuclear fusion 
D) gravitational collapse matches gas pressure 
E) all of the above 
A) nuclear fusion and fission occur at the same rate 
B) gas pressure matches temperature 
C) temperature matches the rate of nuclear fusion 
D) gravitational collapse matches gas pressure 
E) all of the above

Question 19

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 20

In the early 1700's Kant suggested there were many galaxies visible from Earth but the idea was not popular because ________.

Accepted Answer

A) at that time,people generally believed the earth was the center of the universe. 
B) only modern satellite data supports that point of view 
C) that hypothesis would require a significantly larger universe than was widely accepted at that time 
D) that hypothesis would require that objects travel faster than the speed of light 
E) the "Big Bang" theory did not support that concept 
A) at that time,people generally believed the earth was the center of the universe. 
B) only modern satellite data supports that point of view 
C) that hypothesis would require a significantly larger universe than was widely accepted at that time 
D) that hypothesis would require that objects travel faster than the speed of light 
E) the "Big Bang" theory did not support that concept

Exam 24: Beyond Our Solar System

Possibly the most cataclysmic event associated with the death of a star is the ________.

Which of the following is not true of first generation stars?

How do astronomers believe an irregular galaxy forms?

What was Hubble's major contribution to Cosmology?

The distance light travels in a year,called a(n)________,is used by astronomers to measure stellar distances.

The final stage for a star which is as massive as the Sun is a ________.

Evidence for the existence of dark matter includes ________.

How do we calculate or determine the distances to stars? What units do we use and what are the limitations (if any)of the method used for such calculations?

The densest stars known to exist are ________.

A red star is ________ our Sun.

A red giant has ________.

The least massive main-sequence stars are blue in color.

The hottest main-sequence stars are also the most massive.

What two elements formed first?

Spiral galaxies tend to resemble a pinwheel because ________.

What was the test of the Big Bang Hypothesis discussed in your text?

Why did Hubble think the Cepheid variables he saw in "Fuzzy Patches" were outside the milky way?

Balance for a main sequence star is achieved when ________.

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?

In the early 1700's Kant suggested there were many galaxies visible from Earth but the idea was not popular because ________.

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Weathering, soil, and Mass Wasting

Running Water and Groundwater

Glaciers, deserts, and Wind

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

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 Weather

World Climates and Global Climate Change

Origin of Modern Astronomy

Touring Our Solar System

Light,astronomical Observations,and the Sun

Filters