The Formation Of Stars And Planets

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Questions Bank

Our Place in the Universe
Patterns in the Skymotions of Earth
Laws of Motion
Light and Telescopes
The Formation of Stars and Planets
Terrestrial Worlds in the Inner Solar System
Atmospheres of Venus, Earth, and Mars
The Giant Planets
Small Bodies of the Solar System
Measuring the Stars
Our Star: The Sun
Evolution of Low-Mass Stars
Evolution of High-Mass Stars
The Expansion of Space
The Realm of the Galaxies
Our Galaxy: The Milky Way
Modern Cosmology and the Origin of Structure
Life in the Universe

All Questions

Question 1

Free

True/False

As the planets were forming,the Sun was shining due to nuclear fusion on its surface.

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False

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Question 2

Free

True/False

The maximum mass of a brown dwarf is approximately 0.08 times the mass of the Sun.

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Question 3

Free

True/False

All planets orbit the Sun in the same direction.

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Question 4

Free

True/False

The Solar System was formed when a passing star tidally extruded mass from the forming Sun.

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Question 5

Free

True/False

The plane of an accretion disk is always perpendicular to the axis of rotation of the interstellar cloud out of which it forms.

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False

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Question 6

True/False

Conservation of energy describes why a skater spins faster when her arms are pulled in compared to when they are straight out.

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False

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Question 7

True/False

In the smaller nebulae,as smaller particles collide and stick together,forming larger particles,their self-gravity prevents them from breaking apart,regardless of the strength of the collision.

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Question 8

True/False

Planets like Earth are found closer to the Sun than planets like Jupiter.

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True

False

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Question 9

True/False

The planet Mercury still shows evidence of impact craters from the early periods of solar system formation.

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Question 10

True/False

Astronomers believe that Venus was created with the thick atmosphere it currently has.

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Question 11

True/False

Over 330 extra-solar planets have been detected by direct imaging of the planets.

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Question 12

True/False

Current technology is sensitive enough to detect some extra-solar planets by a dip in brightness of the parent star as the planets pass between us and it.

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Question 13

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To date astronomers have not yet detected Earth-size planets around normal stars.

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Question 14

True/False

Our Solar System is likely unique among the stars in our galaxy.

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Question 15

True/False

Doppler shift can be used to determine the 3-dimensional velocity of a star.

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Question 16

True/False

The angular momentum of a planet depends on its mass and its distance from the Sun.

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False

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Question 17

True/False

Conservation of angular momentum states that as a cloud of interstellar gas and dust collapses,the velocity of the particles increases.

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Question 18

Multiple Choice

In order to "see" into the dense molecular clouds of the Eagle Nebula (image below),what wavelength of light must be used?

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Infrared

Visible

Ultraviolet

X-ray

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Question 19

Multiple Choice

Examine the figure below.What causes molecular clouds to collapse?

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Conservation of charge

Self-gravity

Thermal energy

Radiation

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Question 20

Multiple Choice

According to the conservation of angular momentum,if an ice skater starts spinning with her arms out wide,then slowly pulls them close to her body,this will cause her to:

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spin faster

spin slower

maintain a constant rate of spin

fall over

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