Question 1

As Earth rotates,circumpolar stars appear to move counterclockwise around the north celestial pole.

Accepted Answer

A) True 
 B)False  True

Question 2

Precession of the rotation axis of Earth is caused by

Accepted Answer

A)  the force of gravity from the sun and moon on Earth's equatorial bulge. 
B)  the force of gravity from Neptune and Jupiter on the Earth-moon system. 
C)  the magnetic field of Earth. 
D)  the formation and subsequent melting of glaciers during the ice-ages. 
E)  the impact of asteroids. 
A)  the force of gravity from the sun and moon on Earth's equatorial bulge. 
B)  the force of gravity from Neptune and Jupiter on the Earth-moon system. 
C)  the magnetic field of Earth. 
D)  the formation and subsequent melting of glaciers during the ice-ages. 
E)  the impact of asteroids. A

Question 3

Which of the following statements correctly describes the relationship between stars and the modern boundaries of constellations?

Accepted Answer

A)  Only stars close to the ecliptic (the Earth's orbital plane)are located in constellations. 
B)  Every star is located in a constellation. 
C)  Only the brighter stars are in constellations. 
D)  Only those stars that were visible to the ancient Greeks are located in constellations. 
A)  Only stars close to the ecliptic (the Earth's orbital plane)are located in constellations. 
B)  Every star is located in a constellation. 
C)  Only the brighter stars are in constellations. 
D)  Only those stars that were visible to the ancient Greeks are located in constellations. B

Question 4

If the north celestial pole appears on your horizon,what is your latitude?

Accepted Answer

A)  90$\degree$N 
B)  90$\degree$ S 
C)  0$\degree$ 
D)  45$\degree$ N 
E)  The latitude of the observer cannot be determined from the information given. 
A)  90$\degree$N 
B)  90$\degree$ S 
C)  0$\degree$ 
D)  45$\degree$ N 
E)  The latitude of the observer cannot be determined from the information given.

Question 5

For stars in the same constellation they

Accepted Answer

A)  probably formed at the same time. 
B)  must be part of the same cluster of stars in space. 
C)  must have been discovered at about the same time. 
D)  may actually be very far away from each other. 
A)  probably formed at the same time. 
B)  must be part of the same cluster of stars in space. 
C)  must have been discovered at about the same time. 
D)  may actually be very far away from each other.

Question 6

If you are standing at the Earth's North Pole,which of the following would be located at the zenith?

Accepted Answer

A)  The nadir 
B)  The star Vega 
C)  The celestial equator 
D)  The north celestial pole 
A)  The nadir 
B)  The star Vega 
C)  The celestial equator 
D)  The north celestial pole

Question 7

-Which star in Table 2-1 would appear the brightest to an observer on Earth?

Accepted Answer

A)  ($\alpha$Cet) 
B)  ($\alpha$ CMa) 
C)  Nim 
D)  ($\rho$ Per) 
E)  ($\delta$Dra) 
A)  ($\alpha$Cet) 
B)  ($\alpha$ CMa) 
C)  Nim 
D)  ($\rho$ Per) 
E)  ($\delta$Dra)

Question 8

The summer solstice (at the start of summer)is the point on the ecliptic where the sun

Accepted Answer

A)  crosses the celestial equator moving north. 
B)  crosses the celestial equator moving south. 
C)  is farthest north of the celestial equator halting its northward movement. 
D)  is farthest south of the celestial equator halting its southward movement. 
A)  crosses the celestial equator moving north. 
B)  crosses the celestial equator moving south. 
C)  is farthest north of the celestial equator halting its northward movement. 
D)  is farthest south of the celestial equator halting its southward movement.

Question 9

A sketch of the Earth with its north and south poles and equator is shown.The zenith is located in the sky over your head if you are at...

Accepted Answer

A)  Earth's equator 
B)  Earth's North Pole 
C)  Earth's South Pole 
D)  any of these 
A)  Earth's equator 
B)  Earth's North Pole 
C)  Earth's South Pole 
D)  any of these

Question 10

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky.If the illustration depicts the photograph taken by the observer,which direction was the camera pointing?

Accepted Answer

A)  straight north 
B)  straight east 
C)  straight south 
D)  straight west 
E)  straight up,directly overhead 
A)  straight north 
B)  straight east 
C)  straight south 
D)  straight west 
E)  straight up,directly overhead

Question 11

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky.If the illustration depicts the photograph taken by the observer,which direction was the camera pointing?

Accepted Answer

A)  straight north 
B)  straight east 
C)  straight south 
D)  straight west 
E)  straight up,directly overhead 
A)  straight north 
B)  straight east 
C)  straight south 
D)  straight west 
E)  straight up,directly overhead

Question 12

Star A has an apparent visual magnitude of 13.4,and star B has an apparent visual magnitude of 15.4.Star A is ____ than star B.

Accepted Answer

A)  2 times fainter 
B)  2 times brighter 
C)  6.3 times fainter 
D)  6.3 times brighter 
E)  29.8 times fainter 
A)  2 times fainter 
B)  2 times brighter 
C)  6.3 times fainter 
D)  6.3 times brighter 
E)  29.8 times fainter

Question 13

The elliptical shape of the Earth's orbit varies with time and takes about ____ to complete a cycle.

Accepted Answer

A)  24 hours 
B)  one year 
C)  26 years 
D)  260 years 
E)  100,000 years 
A)  24 hours 
B)  one year 
C)  26 years 
D)  260 years 
E)  100,000 years

Question 14

You live at a latitude of 61$\degree$ N.What is the angle between the southern horizon and the sun at noon at the summer solstice?

Accepted Answer

A)  52.5$\degree$ 
B)  23.5$\degree$ 
C)  61$\degree$ 
D)  29$\degree$ 
E)  5.5$\degree$ 
A)  52.5$\degree$ 
B)  23.5$\degree$ 
C)  61$\degree$ 
D)  29$\degree$ 
E)  5.5$\degree$

Question 15

____________________ is the point in Earth's orbit when Earth is closest to the sun.

Accepted Answer

The answer of ____________________ is the point in Earth's orbit...

Question 16

The star Vega has an apparent visual magnitude of 0.03,and the star HR 4374 has an apparent visual magnitude of 4.87.It has been determined that both stars are at the same distance from Earth.What does this information tell us about the two stars?

Accepted Answer

A)  Vega must be closer to Earth than HR 4374. 
B)  Vega must be farther from Earth than HR 4374. 
C)  Vega must produce less energy than HR 4374. 
D)  Vega must produce more energy than HR 4374. 
E)  Vega will appear fainter to us than HR 4374. 
A)  Vega must be closer to Earth than HR 4374. 
B)  Vega must be farther from Earth than HR 4374. 
C)  Vega must produce less energy than HR 4374. 
D)  Vega must produce more energy than HR 4374. 
E)  Vega will appear fainter to us than HR 4374.

Question 17

In one way of naming stars,a ____ letter indicates its brightness relative to the other stars in the constellation.

Accepted Answer

A)  English 
B)  Arabic 
C)  Greek 
D)  Cyrillic 
A)  English 
B)  Arabic 
C)  Greek 
D)  Cyrillic

Question 18

If an observer walks north toward increasing latitude,the number of circumpolar stars would

Accepted Answer

A)  remain constant. 
B)  decrease. 
C)  increase. 
D)  Unknown unless you also state the longitude of the observer. 
A)  remain constant. 
B)  decrease. 
C)  increase. 
D)  Unknown unless you also state the longitude of the observer.

Question 19

The vernal equinox is the point on the sky where the sun crosses the ____________ going north and east..

Accepted Answer

A)  north celestial pole 
B)  south celestial pole 
C)  celestial equator 
D)  horizon 
A)  north celestial pole 
B)  south celestial pole 
C)  celestial equator 
D)  horizon

Question 20

Which of the following causes seasons on the earth?

Accepted Answer

A)  the earth being closer to the sun during our summer and farther during our winter 
B)  the sun's varying light output 
C)  the tilt of the earth's axis 
D)  the eleven-year sunspot cycle 
A)  the earth being closer to the sun during our summer and farther during our winter 
B)  the sun's varying light output 
C)  the tilt of the earth's axis 
D)  the eleven-year sunspot cycle

Exam 2: A Users Guide to the Sky

As Earth rotates,circumpolar stars appear to move counterclockwise around the north celestial pole.

Precession of the rotation axis of Earth is caused by

Which of the following statements correctly describes the relationship between stars and the modern boundaries of constellations?

If the north celestial pole appears on your horizon,what is your latitude?

For stars in the same constellation they

If you are standing at the Earth's North Pole,which of the following would be located at the zenith?

-Which star in Table 2-1 would appear the brightest to an observer on Earth?

The summer solstice (at the start of summer)is the point on the ecliptic where the sun

A sketch of the Earth with its north and south poles and equator is shown.The zenith is located in the sky over your head if you are at...

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky.If the illustration depicts the photograph taken by the observer,which direction was the camera pointing?

An observer in the Northern Hemisphere takes a time exposure photograph of the night sky.If the illustration depicts the photograph taken by the observer,which direction was the camera pointing?

Star A has an apparent visual magnitude of 13.4,and star B has an apparent visual magnitude of 15.4.Star A is ____ than star B.

The elliptical shape of the Earth's orbit varies with time and takes about ____ to complete a cycle.

You live at a latitude of 61 °\degree° N.What is the angle between the southern horizon and the sun at noon at the summer solstice?

____________________ is the point in Earth's orbit when Earth is closest to the sun.

The star Vega has an apparent visual magnitude of 0.03,and the star HR 4374 has an apparent visual magnitude of 4.87.It has been determined that both stars are at the same distance from Earth.What does this information tell us about the two stars?

In one way of naming stars,a ____ letter indicates its brightness relative to the other stars in the constellation.

If an observer walks north toward increasing latitude,the number of circumpolar stars would

The vernal equinox is the point on the sky where the sun crosses the ____________ going north and east..

Which of the following causes seasons on the earth?

Here and Now

Cycles of the Moon

The Origin of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

The Formation and Structure of Stars

Stellar Evolution

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Active Galaxies and Supermassive Black Holes

Modern Cosmology

The Origin of the Solar System

Earth: the Standard of Comparative Planetology

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus,neptune,and the Kuiper Belt

Meteorites,asteroids,and Comets

Astrobiology: Life on Other Worlds

Filters

You live at a latitude of 61 $\degree$ N.What is the angle between the southern horizon and the sun at noon at the summer solstice?