chapter Flashcards

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1
Q

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

A

27.3

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2
Q

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

A

senadic month

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3
Q

do we ever see the back side of the moon?

A

no

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4
Q

what causes a tide to rise or fall

A

gravitational pullby sun or moon

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5
Q

what is the rise of sea level called

A

hightide

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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 earth,the sun or moon

A

sun

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8
Q

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

A

moon

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9
Q

how are the sun,moom,the earth allined for spring tide

A

sun,earth,moon

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10
Q

how are the earth,moon,and sun alligned for neap tide

A

sun,earth,moon

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11
Q

what does the phase of the moon you see depend on

A

position of moon earth and sun

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12
Q

when does a new moon occur

A

when the moon is between the earth and sun

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13
Q

how many phases does themoon have

A

8

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14
Q

what is the definition of waxing phase

A

the illuminating portion that we see appears each night

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15
Q

what is waning phase

A
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16
Q

what are the moon phase names

A

new moon.waxing cresent,first quarter.3rd quarter,warning gibbious,full moon,waxing gibbous,

17
Q

where is the world month derived from

A

from same root word as moon

18
Q

how is earth,moon.and sun alligned during solar eclipse

A

sun,moon,earth

19
Q

what is an umbra

A

dark part

20
Q

what is a penumbra

A

light part

21
Q

how is the earth,moon,and sun aligned during lunar eclipse

A

sun,earth,moon

22
Q

how are the depressions on the moon formed

A

stroids,metorids,and comits colid with the moon

23
Q

are there mountains on the moon

A

yes

24
Q

which side of the moon is thicker

A
25
Q

is the mantle ofthe moon a solid or liquide

A
26
Q

what did the chementine spacecraft do

A

comformed that the crust that fases earth is much thinner,provided information on the mineral content

27
Q

what did the lunar prospector do

A
28
Q

what is the giant impact theory

A