Question 1

Space telescopes looking for transiting planets look for small drops in brightness; these dropscan be detected if they are greater than about:

Accepted Answer

A) 10%. 
B) 1%. 
C) 0.01%. 
D) 0.0001%. 
E) any size. 
A) 10%. 
B) 1%. 
C) 0.01%. 
D) 0.0001%. 
E) any size.

Question 2

________ in the early solar system might explain many of the observed irregularities.

Accepted Answer

The answer of ________ in the early solar system might...

Question 3

Exoplanets are divided into four groups based on their radii. These groups are generallynamed after planets in our solar system. What are these 4 groups, and what is the approximaterange of radii for planets in each?

Accepted Answer

Earths, less than 1 1/4 Earth

Question 4

Most extrasolar Neptunes and Jupiters found to date have:

Accepted Answer

A) orbits very close to their parent stars, making them hot Neptunes and hot Jupiters. 
B) orbits that are more eccentric than those of planets in our solar system, with eccentricitiesgreater than 0.1. 
C) orbits that are less eccentric than those of planets in our solar system, with eccentricities lessthan 0.01. 
D) much larger orbits than the jovian planets in our solar system. 
A) orbits very close to their parent stars, making them hot Neptunes and hot Jupiters. 
B) orbits that are more eccentric than those of planets in our solar system, with eccentricitiesgreater than 0.1. 
C) orbits that are less eccentric than those of planets in our solar system, with eccentricities lessthan 0.01. 
D) much larger orbits than the jovian planets in our solar system.

Question 5

Collisions or near collisions are necessary to explain the observed irregularities in our solarsystem.

Accepted Answer

A) True 
 B)False

Question 6

Why do instruments that are looking for transiting planets need to look for very smallbrightness changes?

Accepted Answer

Because a transiting

Question 7

So far, beyond the solar system the exoplanets found have been mostly:

Accepted Answer

A) large jovians orbiting solar-type stars about where our jovians are found. 
B) large jovians with terrestrial-type orbits. 
C) terrestrials very close to their star, and transiting its disk. 
D) terrestrials with very elongated, distant orbits like comets. 
E) brown dwarfs much more massive than Jupiter. 
A) large jovians orbiting solar-type stars about where our jovians are found. 
B) large jovians with terrestrial-type orbits. 
C) terrestrials very close to their star, and transiting its disk. 
D) terrestrials with very elongated, distant orbits like comets. 
E) brown dwarfs much more massive than Jupiter.

Question 8

We now know of over 100 jovian exoplanets, but no terrestrial planets around other starssimilar to the Sun.

Accepted Answer

A) True 
 B)False

Question 9

Beyond our own solar system, the planets found to date have tended to be:

Accepted Answer

A) Kuiper Belt objects, far from the glare of their suns. 
B) large jovians far from stars like our Sun. 
C) large jovians with orbits more like terrestrial planets. 
D) terrestrials very close to their star, and transiting its disk. 
E) imaginary, with no present proof that they really exist. 
A) Kuiper Belt objects, far from the glare of their suns. 
B) large jovians far from stars like our Sun. 
C) large jovians with orbits more like terrestrial planets. 
D) terrestrials very close to their star, and transiting its disk. 
E) imaginary, with no present proof that they really exist.

Question 10

The transit technique works best for:

Accepted Answer

A) exoplanets whose orbits are along our line of sight (edge on). 
B) exoplanets whose orbits are perpendicular to our line of sight (face on). 
C) exoplanets whose orbits are nearly circular (low eccentricity). 
D) exoplanets whose orbits are very eccentric (very elliptical). 
A) exoplanets whose orbits are along our line of sight (edge on). 
B) exoplanets whose orbits are perpendicular to our line of sight (face on). 
C) exoplanets whose orbits are nearly circular (low eccentricity). 
D) exoplanets whose orbits are very eccentric (very elliptical).

Question 11

The Kepler mission uses the ________ technique to detect exoplanets.

Accepted Answer

The answer of The Kepler mission uses the ________ technique...

Question 12

Which of the following are irregularities in our solar system that must be explainable inmodels of planetary formation?

Accepted Answer

A) Venus's low rate of rotation 
B) Mars' north-south asymmetry 
C) the tilt of Uranus's rotation axis 
D) binary Kuiper Belt objects 
E) all of the above 
A) Venus's low rate of rotation 
B) Mars' north-south asymmetry 
C) the tilt of Uranus's rotation axis 
D) binary Kuiper Belt objects 
E) all of the above

Question 13

The Earth-Moon system may have been the result of a collision between the Earth and a(n)________-size object.

Accepted Answer

The answer of The Earth-Moon system may have been the...

Question 14

Astronomers expect that stars with multiple planets orbiting them are rare.

Accepted Answer

A) True 
 B)False

Question 15

The ________ method finds exoplanets by the small brightness change caused when anexoplanet passes in front of a background star, causing the light to magnify.

Accepted Answer

gravitatio

Question 16

The condensation theory is an example of:

Accepted Answer

A) a catastrophic theory. 
B) a hot Jupiter theory. 
C) a collision hypothesis. 
D) an evolutionary theory. 
E) a capture theory. 
A) a catastrophic theory. 
B) a hot Jupiter theory. 
C) a collision hypothesis. 
D) an evolutionary theory. 
E) a capture theory.

Question 17

Some type of random event is likely needed to explain the highly tilted rotation axis ofUranus.

Accepted Answer

A) True 
 B)False

Question 18

Explain how the Doppler Effect has been used to detect invisible planets orbiting other Sun-like stars.

Accepted Answer

The Jupiter-like planets are massive eno

Question 19

Most extrasolar planets are hot Jupiters, discovered in the infrared by the Spitzer Spacetelescope.

Accepted Answer

A) True 
 B)False

Question 20

Describe an example of the creation of an object due to a random event in our solar system.

Accepted Answer

The large impact hyp

Exam 15: Exoplanets: Planetary Systems Beyond Our Own

Space telescopes looking for transiting planets look for small drops in brightness; these dropscan be detected if they are greater than about:

________ in the early solar system might explain many of the observed irregularities.

Exoplanets are divided into four groups based on their radii. These groups are generallynamed after planets in our solar system. What are these 4 groups, and what is the approximaterange of radii for planets in each?

Most extrasolar Neptunes and Jupiters found to date have:

Collisions or near collisions are necessary to explain the observed irregularities in our solarsystem.

Why do instruments that are looking for transiting planets need to look for very smallbrightness changes?

So far, beyond the solar system the exoplanets found have been mostly:

We now know of over 100 jovian exoplanets, but no terrestrial planets around other starssimilar to the Sun.

Beyond our own solar system, the planets found to date have tended to be:

The transit technique works best for:

The Kepler mission uses the ________ technique to detect exoplanets.

Which of the following are irregularities in our solar system that must be explainable inmodels of planetary formation?

The Earth-Moon system may have been the result of a collision between the Earth and a(n)________-size object.

Astronomers expect that stars with multiple planets orbiting them are rare.

The ________ method finds exoplanets by the small brightness change caused when anexoplanet passes in front of a background star, causing the light to magnify.

The condensation theory is an example of:

Some type of random event is likely needed to explain the highly tilted rotation axis ofUranus.

Explain how the Doppler Effect has been used to detect invisible planets orbiting other Sun-like stars.

Most extrasolar planets are hot Jupiters, discovered in the infrared by the Spitzer Spacetelescope.

Describe an example of the creation of an object due to a random event in our solar system.

Charting the Heavens: The Foundations of Astronomy

The Copernican Revolution: The Birth of Modern Science

Radiation: Information From the Cosmos

Spectroscopy: the Inner Workings of Atoms

Telescopes: The Tools of Astronomy

The Solar System: Comparative Planetology and Formation Models

Earth: Our Home in Space

The Moon and Mercury: Scorched and Battered Worlds

Venus: Earths Sister Planet

Mars: a Near Miss for Life

Jupiter: Giant of the Solar System

Saturn: Spectacular Rings and Mysterious Moons

Uranus and Neptune: The Outer Worlds of the Solar System

Solar System Debris: Keys to Our Origin

The Sun: Our Parent Star

The Stars: Giants, Dwarfs, and the Main Sequence

The Interstellar Medium: Gas and Dust Among the Stars

Star Formation: a Traumatic Birth

Stellar Evolution: The Life and Death of a Star

Stellar Explosions: Novae, Supernovae, and the Formation of the Elements

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: a Spiral in Space

Galaxies: Building Blocks of the Universe

Galaxies and Dark Matter: The Large-Scale Structure of the Cosmos

Cosmology: The Big Bang and the Fate of the Universe

The Early Universe: Toward the Beginning of Time

Life in the Universe: Are We Alone

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