1 introduction to earth Flashcards

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1
Q

why does the earth appear to be flat?

A

because we’re only seeing a small portion of the whole shape from earth

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2
Q

how does land appear from the sea?

A

it slowly appears over the horizon

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3
Q

which parts of land are visible first?

A

tops of mountains, then the rest of the land

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4
Q

what happens to your view when you climb higher?

A

you can see further

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5
Q

how much can you see on flat earth?

A

forever, only limit is your eyesight

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6
Q

how much can you see on round earth?

A

the higher, the more. limited by the curve of the surface

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7
Q

north star aka?

A

polaris

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8
Q

what happens to the polaris as you move north?

A

appears higher

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9
Q

north star flat earth

A

angle always stays the same

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10
Q

north star round earth

A

angle depends on your position, increases as you move north

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11
Q

lunar eclipse aka?

A

blood moon

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12
Q

when does the lunar eclispe occur

A

during a full moon

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13
Q

what is the lunar eclipse?

A

when the sun earth and moon line up in order, moon moving into earth’s shadow and “disappearing”

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14
Q

lunar eclipse=round earth. how did aristotle know this?

A

circular shadow=sphere

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15
Q

what is a solar eclipse?

A

the moon moving between the earth and sun, sun disappearing

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16
Q

why is earth a sphere?

A

because a planets gravity pulls equally from all sides

17
Q

why does a planet bulge out along the equator?

A

centrifugal force
big planets spin fast but gravity manages to hold them together

18
Q

what is the extra width called?

A

equatorial bulge