Question 1

Why would astronomers be interested in placing a gamma ray detecting observatory in space?

Accepted Answer

A) to map gamma ray emissions from radioactive elements on Earth 
B) to detect nuclear weapons tests on Earth 
C) to map high-energy electromagnetic waves from distant sources that would be blocked out or scattered by Earth's atmosphere 
D) to map gamma ray emissions coming from the Sun 
A) to map gamma ray emissions from radioactive elements on Earth 
B) to detect nuclear weapons tests on Earth 
C) to map high-energy electromagnetic waves from distant sources that would be blocked out or scattered by Earth's atmosphere 
D) to map gamma ray emissions coming from the Sun

Question 2

The problems encountered with lenses caused this scientist to build reflecting telescopes of his own design.

Accepted Answer

A) Albert Einstein 
B) Sir Isaac Newton 
C) Galileo 
D) George Hale 
E) Niels Bohr 
A) Albert Einstein 
B) Sir Isaac Newton 
C) Galileo 
D) George Hale 
E) Niels Bohr

Question 3

To improve the resolution of radio telescopes,astronomers ________.

Accepted Answer

A) group smaller telescopes in arrays,like the very large array in New Mexico 
B) make bigger telescopes 
C) place the telescope in outer space 
D) scan the skies rapidly to detect the direction of the radio signal 
A) group smaller telescopes in arrays,like the very large array in New Mexico 
B) make bigger telescopes 
C) place the telescope in outer space 
D) scan the skies rapidly to detect the direction of the radio signal

Question 4

A(n)________ spectrum is produced when white light is passed through a comparatively cool gas under low pressure.

Accepted Answer

dark-line

Question 5

The most conspicuous features on the surface of the Sun are dark areas called ________.

Accepted Answer

A) granules 
B) helium lines 
C) flares 
D) spicules 
E) sunspots 
A) granules 
B) helium lines 
C) flares 
D) spicules 
E) sunspots

Question 6

Irregularities in brightness on the Sun's photosphere (granules)are produced by ________.

Accepted Answer

A) large convective cells within the photosphere 
B) different elemental abundances being stirred within the photosphere,to produce variable brightness 
C) pods of solid mass ejected to the photosphere by violent explosions within the Sun's interior,hence the name granule 
D) local violent explosions within the photosphere equivalent to a hydrogen bomb explosion 
A) large convective cells within the photosphere 
B) different elemental abundances being stirred within the photosphere,to produce variable brightness 
C) pods of solid mass ejected to the photosphere by violent explosions within the Sun's interior,hence the name granule 
D) local violent explosions within the photosphere equivalent to a hydrogen bomb explosion

Question 7

reflecting refracting radio optical

Accepted Answer

The answer of reflecting refracting radio optical...

Question 8

Classic Newtonian reflector telescopes use a mirror shaped like ________.

Accepted Answer

A) a parabola 
B) a concave spherical surface 
C) a convex spherical surface 
D) a hyperbola 
A) a parabola 
B) a concave spherical surface 
C) a convex spherical surface 
D) a hyperbola

Question 9

In some instances,light behaves like waves,and in others,like discrete particles.

Accepted Answer

A) True 
 B)False

Question 10

When several radio telescopes are connected together,the resulting network is called a(n)________.

Accepted Answer

radio inte

Question 11

Light is an electromagnetic wave,meaning an electric field and magnetic field travel together,oscillating at specific frequency.All metals are electrical conductors and all metals are also opaque to light.Why might this be,knowing the nature of light waves?

Accepted Answer

A) The metal atoms absorb the light into their nucleus. 
B) The free electrons in the metal capture the light. 
C) The electric field of the wave excites electrons,which move through the solid conductor and dissipate the electric field,stopping the light wave. 
D) The magnetic field polarizes iron,so all metals have a similar property,so when the magnetic field interacts with atoms,it dissipates the wave. 
A) The metal atoms absorb the light into their nucleus. 
B) The free electrons in the metal capture the light. 
C) The electric field of the wave excites electrons,which move through the solid conductor and dissipate the electric field,stopping the light wave. 
D) The magnetic field polarizes iron,so all metals have a similar property,so when the magnetic field interacts with atoms,it dissipates the wave.

Question 12

Hale discovered that sunspots were associated with magnetic fields.What happens to these magnetic fields during a full sunspot cycle?

Accepted Answer

A) They die away. 
B) They get stronger. 
C) They get weaker. 
D) They change polarity. 
A) They die away. 
B) They get stronger. 
C) They get weaker. 
D) They change polarity.

Question 13

Which of the following is not a discovery made by the Hubble Space Telescope?

Accepted Answer

A) distinction of the various rings of Saturn 
B) demonstration that disk shaped dust clouds are common around young stars 
C) evidence for massive black holes in the center of our galaxy 
D) deep space images never seen before 
A) distinction of the various rings of Saturn 
B) demonstration that disk shaped dust clouds are common around young stars 
C) evidence for massive black holes in the center of our galaxy 
D) deep space images never seen before

Question 14

Radio telescopes are generally much larger in size than are optical telescopes.

Accepted Answer

A) True 
 B)False

Question 15

The Spitzer space telescope is ________.

Accepted Answer

A) a planned replacement telescope for Hubble 
B) a new X-ray detecting observatory 
C) a thermal infrared detecting telescope 
D) the next generation gamma ray detecting satellite 
A) a planned replacement telescope for Hubble 
B) a new X-ray detecting observatory 
C) a thermal infrared detecting telescope 
D) the next generation gamma ray detecting satellite

Question 16

Galileo built the first known telescope.

Accepted Answer

A) True 
 B)False

Question 17

The part of the Sun clearly visible during a solar eclipse is ________.

Accepted Answer

A) the photosphere 
B) the chromospheres 
C) the mesosphere 
D) the corona 
A) the photosphere 
B) the chromospheres 
C) the mesosphere 
D) the corona

Question 18

Compare and contrast the various types of telescopes,including radio telescopes.What are the advantages and disadvantages of each one? Are there other considerations when choosing one telescope over another besides optical clarity or magnification?

Accepted Answer

Some telescopes reach farther than other

Question 19

The outermost portion of the solar atmosphere is called the photosphere.

Accepted Answer

A) True 
 B)False

Question 20

The spectra of most stars are dark-line spectra because ________.

Accepted Answer

A) elements in the Sun's outer atmosphere emit radiation between these dark bands 
B) elements in the Sun's outer atmosphere absorb in these dark-line bands,blocking the radiation in those bands 
C) elements in the earth's atmosphere absorb in these dark-line bands,blocking out the frequencies in the dark bands 
D) electrons decaying to a lower energy state emit a photon at a fixed energy,leaving dark bands between the emissions 
A) elements in the Sun's outer atmosphere emit radiation between these dark bands 
B) elements in the Sun's outer atmosphere absorb in these dark-line bands,blocking the radiation in those bands 
C) elements in the earth's atmosphere absorb in these dark-line bands,blocking out the frequencies in the dark bands 
D) electrons decaying to a lower energy state emit a photon at a fixed energy,leaving dark bands between the emissions

Exam 23: Light,astronomical Observations,and the Sun

Why would astronomers be interested in placing a gamma ray detecting observatory in space?

The problems encountered with lenses caused this scientist to build reflecting telescopes of his own design.

To improve the resolution of radio telescopes,astronomers ________.

A(n)________ spectrum is produced when white light is passed through a comparatively cool gas under low pressure.

The most conspicuous features on the surface of the Sun are dark areas called ________.

Irregularities in brightness on the Sun's photosphere (granules)are produced by ________.

reflecting refracting radio optical

Classic Newtonian reflector telescopes use a mirror shaped like ________.

In some instances,light behaves like waves,and in others,like discrete particles.

When several radio telescopes are connected together,the resulting network is called a(n)________.

Light is an electromagnetic wave,meaning an electric field and magnetic field travel together,oscillating at specific frequency.All metals are electrical conductors and all metals are also opaque to light.Why might this be,knowing the nature of light waves?

Hale discovered that sunspots were associated with magnetic fields.What happens to these magnetic fields during a full sunspot cycle?

Which of the following is not a discovery made by the Hubble Space Telescope?

Radio telescopes are generally much larger in size than are optical telescopes.

The Spitzer space telescope is ________.

Galileo built the first known telescope.

The part of the Sun clearly visible during a solar eclipse is ________.

Compare and contrast the various types of telescopes,including radio telescopes.What are the advantages and disadvantages of each one? Are there other considerations when choosing one telescope over another besides optical clarity or magnification?

The outermost portion of the solar atmosphere is called the photosphere.

The spectra of most stars are dark-line spectra 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

Beyond Our Solar System

Filters