Astronomy 200/210 Review

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This is a BONUS assignment that will count up to a maximum of 50 marks and will recorded as part of your lab grade. Its purpose is two-fold:
1) to help bolster your over-all course grade
2) to encourage you to STUDY!!!

Part 1 consists of 30 multiple choice questions.
Part 2 consists of 20 multiple choice questions THAT MUST BE ACCOMPANIED BY WRITTEN EXPLANATIONS indicating how your arrived at your answer. No marks will be awarded without the accompanying explanation.

The Final exam will be based on the ENTIRE COURSE. NOTE - you do not need to do this - it is optional and will be added as a bonus to your grade.

Date Due: This must be completed and submitted by Wednesday, April 22 - 5:00 pm

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2.9 x 10^7 is the same

1 point

2.9 thousand

29 thousand

290 thousand

2.9 million

29 million

Clear selection

4.4 x 10^6 divided by 8.8 x 10^10 is equal to

1 point

5.0 x 10^-5

5.0 x 10^-4

5.0 x 10^4

3.9 x 10^17

3.9 x 10^16

Clear selection

If the light takes 8 minutes to reach Earth from the sun and the nearest star is 4.7 ly from the sun, what is the distance from the sun to the nearest star in astronomical units?

1 point

37.6 AU

1.7 AU

214 AU

300,000 AU

1.5 x 1011 AU

Clear selection

An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move

1 point

counter clockwise.

clockwise.

from left to right.

from right to left.

nearly vertically upward.

Clear selection

Which star in the table below would not be visible to the unaided eye of an observer on Earth?

1 point

delta Cet

alpha CMa

Nim

rho Per

gamma Dra

Clear selection

You live at a latitude of 39° S. What is the angle between the southern horizon and the south celestial pole?

1 point

45°

23.5°

39°

51°

The answer depends on the day of the year.

Clear selection

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.

1 point

2 times fainter

2 times brighter

6.3 times fainter

6.3 times brighter

29.8 times fainter

Clear selection

A total lunar eclipse is

1 point

visible only from the path of totality.

visible only during a new moon.

visible to all observers on the side of Earth from which the moon would be visible at that time.

an opportunity to study the corona of the sun

none of the above

Clear selection

Ptolemy's model of the universe

1 point

was heliocentric.

included elliptical orbits.

contained epicycles.

all of the above

none of the above

Clear selection

Saturn is on average 10 AU from the sun. What is the approximate orbital period of Saturn?

1 point

10 years

32 years

100 years

1000 years

1,000,000 years

Clear selection

______________ introduced the concept of the eccentrics to planetary motion about Earth, created a star catalog, and is generally credited with the development of trigonometry.

1 point

Kepler

Tycho

Copernicus

Galileo

Hipparchus

Clear selection

Which of the following was not based on uniform circular motion?

1 point

the Rudolphine Tables

the Prutenic Tables

the Alphonsine Tables

the Almagest

the Copernican system

Clear selection

The diagram below illustrates the orbit of a satellite around Earth. Which letter indicates the location of perigee?

1 point

None of these since Perigee is the time to complete an orbit!

Clear selection

According to the theory of general relativity, gravity is caused by

1 point

the equivalence principle.

the change in mass of a moving body.

the curvature of space-time.

the constant speed of light.

none of the above

Clear selection

How much energy is released if 2 kg of matter is converted into pure energy?

1 point

2 joules

6 x 10^8 joules

1.2 x 10^9 joules

9 x 10^16 joules

1.8 x 10^17 joules

Clear selection

The brightness of a light obeys the inverse square law. This statement implies that

1 point

a light source will appear two times brighter at 2 meters than it does at 6 meters.

a light source will appear three times brighter at 2 meters than it does at 6 meters.

a light source will appear six times faintest at 2 meters than it does at 6 meters.

a light source will appear nine times brighter at 2 meters than it does at 6 meters.

the brightness of the light source will not change with distance from the light source

Clear selection

The radius of Earth is 6378 km. The force of gravity on a 1 kg ball at Earth's surface is 9.8 kg m s-2. What is the force of gravity on this same ball when the ball is located 12,756 km from Earth's center?

1 point

2.45 kg m s-2

39.2 kg m s-2

4.9 kg m s-2

19.6 kg m s-2

9.8 kg m s-2

Clear selection

What is the wavelength of the shortest wavelength light that can be seen with the human eye?

1 point

400 nm

4000 nm

7000 nm

700 nm

3 x 108 m

Clear selection

The ability of a telescope to resolve fine detail is known as the telescope's

1 point

light gathering power

focal length

resolving power

telescope detailing

aberration

Clear selection

The neutral hydrogen atom consists of

1 point

one proton and one neutron.

one proton.

one proton, one neutron, and one electron.

one proton and one electron.

an isotope and an ion.

Clear selection

The table below lists the color index for each of several stars. Which star in this table would be the hottest?

1 point

a Boo

b Peg

g Leo

a Leo

a Peg

Clear selection

The table below lists the spectral types for each of five stars. Which star in this table would have the have the strongest hydrogen lines?

1 point

a For

o Cet

35 Ari

g Tri

5 Per

Clear selection

The radiation emitted from a star has a maximum intensity at a wavelength of 500 nm. What is the temperature of this star?

1 point

6,000 K

5,000 K

1.5 x 10^9 K

500 K

10,000 K

Clear selection

The absorption lines in the visible portion of the spectrum of a star that are produced by hydrogen are from the

1 point

Lyman series.

Balmer series.

Paschen series.

isotopes of hydrogen.

ions of hydrogen.

Clear selection

Sunspots are known to be magnetic phenomena because

1 point

Doppler shifts in spectral lines are observed.

the Zeeman effect is observed in sunspots.

collisional broadening is observed in spectral lines.

infrared observations indicate that the sunspots are cooler than their surroundings.

observations during eclipses reveal a very extensive photosphere.

Clear selection

A ___________ is believed to occur when energy, stored in a twist in the solar magnetic field above a sunspot, is suddenly released.

1 point

solar flare

supergranule

spicule

coronal hole

none of the above

Clear selection

In the H-R diagram, 90 percent of all stars are

1 point

in the giant region.

in the supergiant region.

among the B stars.

among the G stars.

on the main sequence.

Clear selection

We know that giant stars are larger in diameter than the sun because

1 point

they are more luminous but have about the same temperature.

they are less luminous but have about the same temperature.

they are hotter but have about the same luminosity.

they are cooler but have about the same luminosity.

they have a larger absolute magnitude than the sun.

Clear selection

_________ are small dark nebulae less than 1 parsec in diameter that contain 10 to 100 solar masses

1 point

HI regions

HII regions

Emission nebulae

Bok globules

Reflection nebulae

Clear selection

As a white dwarf cools its radius does not change because

1 point

pressure due to nuclear reactions in a shell just below the surface keeps it from collapsing.

pressure does not depend on temperature for a white dwarf because the electrons are degenerate.

pressure does not depend on temperature because the white dwarf is too hot.

pressure does not depend on temperature because the star has exhausted all its nuclear fuels.

material accreting onto it from a companion maintains a constant radius.

Clear selection

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