Question 1

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

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Question 2

How can astronomers be confident that the larger exoplanets discovered are not simply browndwarfs?

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Question 3

How do most of the newly discovered solar systems and planets compare to our own?

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Question 4

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

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Question 5

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

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Question 6

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

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Question 7

Compare and contrast the types of planets that can be found by the radial velocity techniquewith those that can be found by the transit method.

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Question 8

The ________ around a star is the region where liquid water could exist on a planet.

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Question 9

Extrasolar planets are placed in groups by their approximate masses. What are four of theseclasses?

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Question 10

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?

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Question 11

Describe two methods that have already been used to study extrasolar planets, and which onegives us the most information.

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Question 12

What are some of the properties of objects in the solar system that a theory of its origin DOESNOT need to account for? Explain.

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Question 13

Hot Jupiters have ________ period orbits.

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Question 14

The Kepler mission uses the ________ technique to detect exoplanets.

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Question 15

The ________ theory is thought to explain the formation of our solar system.

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Question 16

Why does the present method of finding extrasolar planets not favor finding solar systems likeours?

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Question 17

Discuss the important features that allow space-based telescopes to search for transitingexoplanets.

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Question 18

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

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Question 19

Why are infrared observations useful when observing extrasolar planets?

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Question 20

The radial velocity method is less likely to detect low mass planets than high mass planetsbecause low mass planets cause smaller ________ fluctuations.

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Quiz 15: Exoplanets: Planetary Systems Beyond Our Own