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Astr210 > Closed Quiz 2 > Flashcards

Closed Quiz 2 Flashcards

1
Q

When is it thought that life formed on Earth? What is so unusual about this?

A

Life on earth started maybe as early as r.w.I billion years ago during the late heavy bombardment which lasted about 3.8

END OF WEEK 3 = HIGHLIGHTED BLUE

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2
Q

What was Mars like when life formed on Earth?

A

WEEK FOUR HIGHLIGHT EXCHANGE OF MATERIAL BETWEEN WORLDS

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3
Q

What are the possible implications for life elsewhere if a) life on Earth started multiple times; b) life on Earth started just once; c) life started elsewhere and was transported here?

A

Week four - EXCHANGE OF MATERIAL BETWEEN WORLDS

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4
Q

How could life naturally move from one planet to another

A

Week four - EXCHANGE OF MATERIAL BETWEEN WORLDS

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5
Q

What is Oumuamua and why is it important?

A

Week four - INTERSTELLAR OBJECTS

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6
Q

What is a rogue planet?

A

Week four - INTERSTELLAR OBJECTS

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7
Q

What was the Miller-Urey Experiment? Why was it important and relevant to life in the universe?

A
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8
Q

Describe Earth’s first forms of life.

A

Week four - LIFE ON EARTH ORIGIN OF THE LIFE ON EARTH

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9
Q

What caused the Great Oxidation Event? What else happened because of this?

A

Week five - THE GREAT OXYGENATION EVENT

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10
Q

What is a mass extinction? What caused Earth’s first mass extinction? What other kinds of things can cause mass extinctions?

A

Week five - MASS EXTINCTION

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11
Q

What is eukaryogenesis?

A

Week five - THE GREAT OXYGENATION EVENT

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12
Q

What was the Cambrian Explosion? What conditions might have led to it?

A

Week five - THE CAMBRIAN EXPLOSION

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13
Q

What was life on Earth like just prior to the Cambrian Explosion?

A

Most organisms were relatively simple, composed of individual cells or small multicellular organisms occasionally organized into colonies

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14
Q

Be familiar with the general development of life on Earth.

A
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15
Q

In terms of life, what is a bottleneck? How are they a good thing for species that survive?

A

Week five - MASS EXTINCTION

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16
Q

What happened as the dinosaurs became extinct?

A

Week five - MASS EXTINCTION

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17
Q

What is the Rare Earth Hypothesis?

A

Week five - MASS EXTINCTION 2

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18
Q

What provides the energy for most life on Earth?

A

Week six- INTRO TO LIFE IN THE SOLAR SYSTEM

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19
Q

What other sources of energy might work for life?

A

Week six- INTRO TO LIFE IN THE SOLAR SYSTEM

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20
Q

Other than water, what liquids might possibly be used by other forms of life? Where do we find some of those in our Solar System?

A

Week six- INTRO TO LIFE IN THE SOLAR SYSTEM

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21
Q

What sort of techniques and craft have we been using to explore Mars?

A

Week six- FEATURES OF MARS

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22
Q

Describe the kinds of surface features found on Mars.

A

Week six- FEATURES OF MARS

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23
Q

Describe the atmosphere of Mars.

A

Week six- FEATURES OF MARS

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24
Q

What makes up the Martian polar caps?

A

Week six- WATER ON MARS

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25
Q

In what forms do we find water on Mars today? How was that different in the past?

A

Week six- LIQUID WATER ON MARS

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26
Q

What features of the ancient Martian environment suggest that it was capable of sustaining life?

A
27
Q

If life was found to exist (or have previously existed) on Mars what would that likely tell us about the possibilities of life elsewhere in the universe?

A

Week seven - LIFE ON MARS

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28
Q

If there is life on Mars today, where are we most likely to find it? Why would it be there?

A

Week seven - CONTINUATION OF LIFE ON MARS

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29
Q

How did the Viking landers attempt to search for life on Mars? What kind of results did they obtain?

A

Week seven - LIFE ON MARS

Just check experiments

30
Q

What is so important about methane on Mars?

A

Week seven - CONTINUATION OF LIFE ON MARS

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31
Q

How are the conditions on the surface of Mars today different than they were in the past?

A

Week seven - CONTINUATION OF LIFE ON MARS

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32
Q

How might we eventually settle the question of life on Mars? How is the role of the Mars Perseverance Rover in this?

A

Week seven - MISSION OF THE MARS PERSEVERANCE ROVER

Check everything

33
Q

What is planetary protection? Why is this a necessary thing? What places have we employed it so far?

A

For scientist to study extraterrestrial environments without interfering with any extend or existing life that may have developed there

The moon

Astr210 (4 decks)

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