chapter 29.3 Flashcards

1
Q

how many days does it take the moon to revolve around earth

A

27.3 days

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2
Q

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

A

synodic month

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3
Q

Do we ever see the back of the moon?

A

no

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4
Q

what causes the tide to rise of fall

A

gravitational pulls by the sun and moon

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5
Q

what is the rise of sea level called

A

high tide

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6
Q

after the sea level rises, how many hours does it take for the sea level to drop

A

6 hours

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7
Q

which is farther from the earth,the sun or the moon

A

the sun

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8
Q

does the moon or the sun cause a greater effect on earths tides

A

the moon

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9
Q

how is the earth moon and sun aligned for the spring tide

A

the sun, earth and then the moon in a straight line

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10
Q

how are the sun earth and moon aligned for the neap tide

A

at a 90 degree and wit the sun earth and moon

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11
Q

what does the phase of the moon you see depend on

A

the positions of the earth moon and sun relative to each other

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12
Q

when does a new moon occur

A

when the moon is between the earth and the sun

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13
Q

how many phases of the moon are there

A

8

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14
Q

what is the definition of waxing phases

A

when the moon is lighter and lighter each night

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15
Q

what is the definition of waning phases

A

the moon is less illuminated each night

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16
Q

what are the moon phase names

A

new moon, waxing crescent, first quarter, waxing gibbous, whole moon, waning gibbous, and waning crescent

17
Q

where is the word month derived from

A

it comes from the same root word moon

18
Q

how is the sun earth and moon alligend in a solar eclipse

A

sun moon and earth

19
Q

what is an umbra

A

where the total solor eclipse is scene in an area and is the darkest portion of the moons shadow on earth

20
Q

what is a penumbra

A

a partial solar eclipse

21
Q

how is the sun earth and moon alligend in a lunar eclipse

A

the sun earth and then moon in a straight line

22
Q

how are the depressions on the moon surface formed

A

by meteorites, asteroids, and comets, that strike its surface

23
Q

are their mountains on the moon

A

yes

24
Q

which side of the moon is thicker

A

the backside of the moon that doesn’t face earth

25
Q

is the mantle of the moon a solid of liquid

A

solid

26
Q

what did the clementine spacecraft do

A

data confirmed that the side of the moon facing earth is thinner and data of the mineral content on the moon

27
Q

what did the lunar prospector do

A

it took photos of the surface of the moon and confirmed that the moon has a small iron rich core and collected evidence that supports the presence of water/ice on the moon

28
Q

what is the giant impact theory

A