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Science > chapter 9 actual test question > Flashcards

chapter 9 actual test question Flashcards

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1
Q

Why did most people reject Wegeners hypothesis?

A

he could not provide a satisfactory explanation for the force that pushes and pulls the continents

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2
Q

What technology did scientists use to map the mid ocean ridge?

A

sonar

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3
Q

In sea floor spreading molten material rises in the mantle and erupts where?

A

mid ocean ridge

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4
Q

How did scientists discover rocks far from the ridge are older the ones near the ridge?

A

pillow shapes, rocks magnetic stripes, age of rock samples, sea floor spreading

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5
Q

what did scientists in a submersible see when they observe the mid ocean ridge?

A

molten material that formed and cooled rapidly

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6
Q

The process by which the ocean floor sinks beneath the ocean and back into the mantle is known as

A

subduction

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7
Q

old oceanic crust is more dense then new oceanic because …

A

it had longer to cool

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8
Q

most geologist’s think that the movement of continental drift are caused by …

A

convection currents

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9
Q

the geological theory that states that pieces of earth’s lithosphere is in constant slow motion

A

plate tectonics

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10
Q

When two plate slip past each other its a…

A

transform boundary

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11
Q

a rift valley form at a..

A

divergent boundary

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12
Q

using data from seismic waves geologists have learned that earth’s interior is made up of several…

A

layers

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13
Q

Earth’s mantle is…

A

made from hot rock, solid, divided into layers based on physical characteristics

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14
Q

Earth’s magnetic field results in movements in the…

A

outer core

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15
Q

scientists think of convection currents flow in the earths what…

A

asthenosphere

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16
Q

a collision between two continental crust produces..

A

mountains

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17
Q

any trace of an ancient organism that is preserved in rock

A

fossil

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18
Q

mid ocean ridges are found where?

A

in every ocean

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19
Q

when two plates come together it is a…

A

convergent boundary

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20
Q

the study of earths interior often relies on indirect evidence from FOSSILS

A

false, seismic waves

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21
Q

Wegener provided evidence from landforms by fossils and climate to support the theory of the SHRINKING EARTH

A

false, continental drift

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22
Q

the transfer of heat by the movement of a fluid is called CONDUCTION

A

False convection

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23
Q

Pressure INCREASES from earth’s surface toward the center

A

true

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24
Q

oceanic crust in the mid ocean ridge is YOUNGER then oceanic crust farther away from it

A

true

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25
Q

if subduction occurs faster then needed an ocean will EXPAND

A

False shrink

26
Q

along a DIVERGENT BOUNDARY to plates will pass each other

A

false, transform boundary

27
Q

Mantle material rises in convection currents because heated material will become MORE DENSE

A

false, less dense

28
Q

Along the mid atlantic ridge north american plate, and the break in the plate are moving APART

A

True

29
Q

The outer most layer of the earth is called the MANTLE

A

false, crust

30
Q

what is pangaea?

A

a single landmass or supercontinent

31
Q

Wegeners evidence to support continental drift

A

land forms, climate change, fossils

32
Q

direct evidence from earth interior

A

rock smaples

33
Q

indirect evidence from earth’s interior

A

seismic waves

34
Q

what is the order of earths layers from the surface

A

crust, mantle, outer core, inner core

35
Q

earth’s inner core is made of…

A

solid metal

36
Q

when you touch a hoy plate energy moves to your hand, this is called…

A

conduction

37
Q

the transfer of heat through empty space is called…

A

radiation

38
Q

heat transfer within a fluid is called…

A

convection

39
Q

when a heat source is removed from a fluid convection currents will…

A

eventually stop

40
Q

according to Wegener’s hypothesis of continental drift…

A

all the continents were once joined in a single land mass and have since drifted apart

41
Q

continental plates pull apart divergent boundaries on land … form

A

rift valleys

42
Q

the part of the mantle called the … is made of soft rock that bends like plastic

A

asthenosphere

43
Q

in the mantle heat is transferred and soft rock flows softly in cycles known as…

A

Convection currents

44
Q

earth quakes produce …

A

seismic waves

45
Q

when you touch a hot plate the transfer of heat from the plate to your hand is called …

A

conduction

46
Q

the hypothesis of … was that there was on super continent

A

Alfred wegener

47
Q

to support wegener’s hypothesis he found evidence from … blank which are ancient organisms preserved in rock

A

fossils

48
Q

energy through a substance that warms our feet is called …

A

radiation

49
Q

the process of … that adds new ocean floor

A

sea floor spreading

50
Q

two of earth’s plates slips past each other along a … boundary

A

transform

51
Q

… is a rock that has dark texture and makes up the most the oceanic crust

A

Basalt

52
Q

the ship shows that the youngest rocks are found …

A

mid ocean ridge

53
Q

subduction occurs where there are …

A

deep ocean trenches

54
Q

the lithosphere is broken in to section called … they float on top of asthenosphere

A

plate tectonics

55
Q

the formation of volcanoes and mountain ranges can be explained by the theory of …

A

Plate tectonics

56
Q

a continental plate and a oceanic plate collide at a …

A

convergent boundary

57
Q

the process when the ocean floor sinks and comes back to the mantle is …

A

subduction

58
Q

wegener believed that the continents have once been joined in one land mass called …

A

pangaea

59
Q

scientists think that the … made of liquid iron and nickel will move to protect earths magnetic field

A

core

60
Q

geologists learn about earth’s interior by studying … through earth

A

evidence

Science (6 decks)

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