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science > science u4 qz1 > Flashcards

science u4 qz1 Flashcards

1
Q

the earth was formed

A

4.6 billion yrs agon

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2
Q

how much of earth is made of salt water

A

71%

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3
Q

how is the earth studied

A

by sesmic waves

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4
Q

what is the crust

A

thin, solid, outermost zone

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5
Q

how much of the earth is the crust

A

1% of the earths mass is the crust

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6
Q

lower bounds of the earth is called

A

moho

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7
Q

what layer is 2/3 of the earths mass

A

mantle

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8
Q

what is the outermost layer of the mantle

A

lithosphere

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9
Q

what are the two qualilies of the lithosphere

A

brittle and cooler

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10
Q

which layer below the lithosphere is plasticiticy

A

the astheoshpere

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11
Q

what are the qualilty of the astheosphere

A

less rigid

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12
Q

what is below the astheosphere

A

the mesosphere

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13
Q

what is the mesosphere made of

A

solid rock

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14
Q

what is the core and where is it located within the earth

A

a sphere below the mantle

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15
Q

what is the outer core

A

a dense liquid

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16
Q

what is the dense liquid made of inside the outer core

A

iron and nickel

17
Q

what is the inner core

A

dense rigid solid

18
Q

what is the inner core made of

A

iron and nickel

19
Q

where does the magentic fleild expand to

A

the magnetosphere

20
Q

what did alferd wagner notice

A

the contidients fit together like a puzzle

21
Q

what is fossil evidance

A

the same fossil found on different contidents

22
Q

what are montain ranges

A

ranges ending in one coast and then reoccuring in another coast

23
Q

what is the climate

A

particular regions and glaciers in places you would normally see them

24
Q

what is rock formation

A

ages and types of rock foud in areas where the condients would have been connected

25
Q

what is the problem

A

alfred couldn’t determind the mechanisum for the contential movement

26
Q

what is density

A

amount of mass given and a given volume

27
Q

what is plate techtonics

A

thoery that explains why and how continets move and its the study of the feaures on the earths crust

28
Q

what is oceanatic

A

dense and made of rock rich in iron and magnesuim

29
Q

what is contiental

A

low density and made of rock and rich in silca

science (2 decks)

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