29.3 Flashcards

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1
Q

Periodic rise and fall in sea level caused by the gravitational attraction among earth,moon and the sun.

A

Tide

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2
Q

Change in appearance of the moon as viewed from earth, due to the relative position of earth, the sun, and the moon

A

moon phase

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3
Q

occurs when the moon passes between the sun and earth, and cast a shadow on part of earth

A

solar eclipse

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4
Q

occurs when earths shadow falls on the moon.

A

Lunar eclipse

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5
Q

Relatively flat, dark-colored regions on the moons surface.

A

Maria

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6
Q

layer of loose, ground-up rock on the lunar surface formed by the accumulation of impact material

A

Regolith

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7
Q

How many days does it take the moon to revolve around earth?

A

27.3 days

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8
Q

A complete lunar phase cycle takes 29.5 days, what is this called?

A

synodic month

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9
Q

Do we ever see the back side of the moon?

A

no

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10
Q

What causes a tide to rise or fall?

A

gravitational pulls by the sun and moon

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11
Q

What is the rise of sea level called?

A

high tide

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12
Q

After the sea level rises how many hours does it take for sea level drop?

A

6 hours

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13
Q

Which is farther from earth, the sun or the moon?

A

the sun

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14
Q

Does the moon or the sun cause a greater effect on earths tide?

A
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15
Q

How are the sun, the earth, and the moon aligned for a spring tide?

A

there in a straight line it goes sun, earth, and moon

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16
Q

How are the sun, the earth, and the moon aligned for a neap tide?

A

90 degree angle

17
Q

What does the phase of the moon you see depend on?

A

The positions of the moon, earth, and sun relative to one another

18
Q

When does a new moon occur?

A

the moon is between the earth and the sun

19
Q

How many phases of the moon are there?

A

8 phases

20
Q

What is the definition of waxing phase?

A

the illuminated portion that we see appears larger each night

21
Q

What is the definition of waning phase?

A
22
Q

What are the moon phases names?new moon, waxing cresent, 1st qarter, waxing gibbous, full moon

A

new moon, waxing crescent, 1st quarter, waxing gibbous, full moon, warning gibbous, 3rd quarter, waning crescent

23
Q

Where is the word month derived from?

A

same root word as moon

24
Q

How is the earth, moon, and sun aligned during a solar eclipse?

A

sun, moon, and earth

25
Q

What is an umbra?

A

Where the total solar eclipse happens the darkest portion of the moons shadow non earth

26
Q

What is a penumbra?

A

Partial solar eclipse not in the dark shadow within earth

27
Q

How is the earth,moon, and sun aligned during a lunar eclipse?

A

earths shadow is being castes on the moon

28
Q

How are the depressions on the moon formed?

A

by meteorites, asteroids, and comets which strike the surface

29
Q

Are there mountains on the moon?

A
30
Q

Which side of the moon is thicker?

A

dark side of the moon

31
Q

is the mantle of the moon a solid or a liquid?

A
32
Q

What did the clementine spacecraft do?(2 things)

A

it conformed the thickness on the moon.

it provided information on the mineral content of moon rock.

33
Q

what did the lunar prospector do?(3 things)

A
  1. took pictures of the moon
  2. confirmed the moon has small iron-rich core
  3. collected evidence that there is presence of water-ice on the moon
34
Q

What is the giant impact theory?

A

mars sized objects collided with earth, where debris were thrown into orbit, then condensed into a large mass forming the moon.