29.3 Flashcards

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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 side of the moon

A

no

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4
Q

what causes a tide to rise or fall

A

gravitational sun and moon

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5
Q

what is the rise of sea level called

A
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6
Q

after the sea level rises how many hours does it take for the sea level 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 the sun cause a greater effect on earths tides

A
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9
Q

how are the sun earth and the moon aligned for a spring tide

A
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10
Q

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

A
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11
Q

what does the phase of the moon you see depend on

A
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12
Q

when does a new moon occur

A

sun relative

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13
Q

how many phases of the moon are there

A

8 phases

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14
Q

what is the defenition of waxing phases

A

the illuminated portion that we see appears larger each night

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15
Q

what is the defeition of waning phases

A
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16
Q

what are the moon phase names

A

new moon waxing crecent waxing gibbous full moon warning gibbous 3rd quarter warning crecent

17
Q

where is the word month dervived from

A

from the same root as moon

18
Q

how is the earth moon and sun algined during solar eclipse

A

where moon blocks sun

19
Q

what is umbra

A
20
Q

what is a penumbra

A
21
Q

hiw is the earth

A