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Astronomy 320 > Test 4- Terresterial Planeys > Flashcards

Test 4- Terresterial Planeys Flashcards

1
Q

Venus is peculiar because

A

it rotates backwards

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2
Q

The probes we have sent to Mars had done the following

A

All the above

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3
Q

Olympus Mons

A

is what killed dinosaurs

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4
Q

Venus is 2.3 light minutes away from Earth. Which of the following is true?

A

If we were talking to someone on Venus it would take 4.6 minutes to hear a response from our questions

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5
Q

The flow patterns on Mars suggest

A

that the climate on Mars was different from the past

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6
Q

The gas tail of a comet always

A

points away from the Sun

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7
Q

The _ is a disk shaped cloud of icy bodies believed to extend from about 40 AU out to 100 AU. It is believed that short period comets originate from this region

A

Kuiper Belt

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8
Q

Why is it believed that life can not evolve on a planet that orbits a spectral type A, B or O star?

A

These stars do not remain on the main sequence long enough for life to evolve

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9
Q

Which hypothesis concerning the formation of the moon makes predictions that best fit the observed lunar data?

A

The large impact hypothesis

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10
Q

Earth possesses few visible craters and the Moon possesses many. This is because

A

only b and c

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11
Q

Which is a false statement about the Moon

A

the moon landing never happened

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12
Q

The theory that Mercury shrank slightly when it was young has been proposed to explain

A

lobate scarps.

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13
Q

The lunar maria are

A

the lava plains of the lunar lowlands.

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13
Q

That the moon has no magnetic field implies that

A

the moon’s core contains little if any molten iron.

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14
Q

The youngest parts of Earth’s crust are

A

the midocean rifts

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15
Q

The oxygen in Earth’s atmosphere

A

all of these

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16
Q

Which of the following is not produced by plate tectonics?

A

Earth’s magnetic field

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17
Q

Why would a decrease in the density of the ozone layer create a public health concern?

A

none of the above

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18
Q

For the fictional planet Hades, use the following Jeans escape graph to determine which gasses would escape from this planet.

A

Hydrogen, Helium, Water, Methane and Ammonia

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19
Q

How does the dirty snowball theory explain the observed characteristics of comets?

A

A dirty snowball contains ices and dirt - A comet contains ices and rocks.

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20
Q

Explain how the impact of a large comet may have caused the extinction of the dinosaurs.

A

dust cloud forms blocking out sunlight

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21
Q

Why must the information in a species’ DNA be changeable

A

So that mutations can occur

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22
Q

Name the four stages of development for a terrestrial planet.

A

Differentiation
Cratering
Flooding
Slow surface erosion

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23
Q

Explain how we can determine the relative ages of lunar feature

A

Cratering Rates
Radioactive Dating

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24
Q

Why does Earth have two high tides a day?

A

tidal forces

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25
Q

What are the four layers of the earth?

A

Crust, Mantle, Liquid outer core, Solid inner core

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26
Q

The atmospheric pressure on the surface of Venus is about 92 times the surface pressure here on Earth

A

True

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27
Q

Venus rotates and revolves in the same directions as Earth.

A

False

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27
Q

All of the teressteral planets have a solid surface

A

True

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28
Q

The surface of Mars is so hot that it can melt lead.

A

False

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29
Q

We believe that there was once liquid water on Mars

A

True

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29
Q

Radar maps of Venus show impact craters.

A

True

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30
Q

All of the terrestrial planets except Earth have been through the four stages of planetary development.

A

False

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31
Q

Venus does not appear to have a retrograde motion when observed from Earth.

A

False

32
Q

Venus’ volcanos are the result of plate tectonics.

A

False

33
Q

Rovers on the surface of Venus have found evidence that water existed in the past.

A

False

34
Q

The canals of Mars were eventually found to be crustal faults.

A

False

35
Q

At the poles of Mars, we can see the sublimation and deposition of carbon dioxide.

A

True

36
Q

The planet most hospitable for human life is Venus because it is about the same size, density, distance and has an atmosphere.

A

False

37
Q

Venus is very hot because its atmosphere is rich in carbon dioxide.

A

True

38
Q

The ‘blueberries’ on the surface of Mars strongly suggest that Mars previously had water on the surface

A

True

39
Q

It is believed that frozen water (permafrost) exists on Mars’ poles.

A

True

40
Q

The surface temperature of Venus is hot enough to melt lead

A

True

41
Q

Flow channels on Venus suggest it was once rich in water.

A

False

42
Q

The size of Olympus Mons suggests that the crust of Mars is very thick

A

True

42
Q

Venus is commonly known as Earth’s sister planet due to its size, mass and distance from the sun.

A

True

43
Q

The atmosphere of Mars is 95% carbon dioxide and resulted in Mars being the warmest planet in our solar system due to the Runaway Greenhouse Effect

A

False

44
Q

The moons of the terrestrial planets all have gone through the differentation phase of development.

A

False

45
Q

Valles Marineris is a long valley on Mars believed to resemble the rift valleys of eastern Africa

A

True

46
Q

All of the terrestrial planets have a retrograde motion when observed from Earth.

A

True

47
Q

Meteorites seem to be primarily composed of material very similar to the material in comets.

A

False

48
Q

The meteors in meteor showers are believed to be the debris left behind in comet orbits.

A

True

49
Q

Jupiter was probably influential in preventing the formation of a planet at the present location of the asteroid belt.

A

True

50
Q

Jupiter was probably influential in preventing the formation of a planet at the present location of the asteroid belt.

A

True

51
Q

The type II tail of a comet always points toward the sun.

A

False

52
Q

The dirty snowball theory suggests that the head of a comet is composed of ices.

A

True

53
Q

The Kuiper Belt is predicted to be the place where most of the short period comets formed.

A

True

54
Q

The existence of the Oort cloud cannot be confirmed observationally from Earth because the objects are too small.

A

True

55
Q

All life on Earth is based on carbon chemistry.

A

True

56
Q

DNA molecules cannot be altered by chance errors in reproduction.

A

False

57
Q

The oldest fossils on Earth are more than 3 billion years old.

A

True

58
Q

If life is to develop on a planet, the planet must lie just inside the inner edge of its star’s life zone

A

False

59
Q

The wavelengths that are most likely for communication with other civilizations are those in the water hole.

A

True

60
Q

Even if societies survive at a technological level for only 10 years, that is long enough to communicate with them

A

False

61
Q

Jean’s escape velocity chart is useful in understanding what chemicals can exist in a planets atmosphere based upon the planets escape velocity, temperature and distance from the sun.

A

True

62
Q

The dynamo effect on Mercury produces Mercury’s magnetic field

A

True

63
Q

Lobate scarps are ridges on Mercury and are similar to wrinkles on dried crandberries.

A

True

64
Q

The Moon stopped evolving because it is too small to have kept its internal heat.

A

True

64
Q

Mercury has a magnetic field.

A

True

65
Q

The tidal forces on Mercury from the Sun produces Mercury’s pecular rotation

A

True

66
Q

Neap tides occur at first and third quarter and are lower than Spring tides that occur at new and full Moon.

A

True

66
Q

The Moon is believed to be a captured astroid.

A

False

66
Q

Mercury’s smooth plains are probably the oldest parts of the crust

A

False

67
Q

The tidal forces of our Sun has resulted in the unique rotation/revolution period of Mercury.

A

True

68
Q

Earth’s magnetic field is generated in the iron rich mantle.

A

False

69
Q

The oldest parts of Earth’s crust are located along the midocean rifts.

A

False

70
Q

The Earth never passed through the cratering stage in planetary development.

A

False

71
Q

The central part of Earth’s core is solid.

A

True

72
Q

Earth’s magnetic field has reversed itself

A

True

73
Q
A
74
Q
A
75
Q

The greenhouse effect occurs because carbon dioxide is opaque to infrared radiation.

A

True

76
Q
A

Astronomy 320 (2 decks)

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