chapter 9 actual test question

Question 1

Why did most people reject Wegeners hypothesis?

Answer 1

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

Question 2

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

Answer 2

sonar

Question 3

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

Answer 3

mid ocean ridge

Question 4

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

Answer 4

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

Question 5

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

Answer 5

molten material that formed and cooled rapidly

Question 6

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

Answer 6

subduction

Question 7

old oceanic crust is more dense then new oceanic because …

Answer 7

it had longer to cool

Question 8

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

Answer 8

convection currents

Question 9

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

Answer 9

plate tectonics

Question 10

When two plate slip past each other its a…

Answer 10

transform boundary

Question 11

a rift valley form at a..

Answer 11

divergent boundary

Question 12

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

Answer 12

layers

Question 13

Earth’s mantle is…

Answer 13

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

Question 14

Earth’s magnetic field results in movements in the…

Answer 14

outer core

Question 15

scientists think of convection currents flow in the earths what…

Answer 15

asthenosphere

Question 16

a collision between two continental crust produces..

Answer 16

mountains

Question 17

any trace of an ancient organism that is preserved in rock

Answer 17

fossil

Question 18

mid ocean ridges are found where?

Answer 18

in every ocean

Question 19

when two plates come together it is a…

Answer 19

convergent boundary

Question 20

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

Answer 20

false, seismic waves

Question 21

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

Answer 21

false, continental drift

Question 22

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

Answer 22

False convection

Question 23

Pressure INCREASES from earth’s surface toward the center

Answer 23

true

Question 24

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

Answer 24

true

Question 25

if subduction occurs faster then needed an ocean will EXPAND

Answer 25

False shrink

Question 26

along a DIVERGENT BOUNDARY to plates will pass each other

Answer 26

false, transform boundary

Question 27

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

Answer 27

false, less dense

Question 28

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

Answer 28

True

Question 29

The outer most layer of the earth is called the MANTLE

Answer 29

false, crust

Question 30

what is pangaea?

Answer 30

a single landmass or supercontinent

Question 31

Wegeners evidence to support continental drift

Answer 31

land forms, climate change, fossils

Question 32

direct evidence from earth interior

Answer 32

rock smaples

Question 33

indirect evidence from earth's interior

Answer 33

seismic waves

Question 34

what is the order of earths layers from the surface

Answer 34

crust, mantle, outer core, inner core

Question 35

earth's inner core is made of...

Answer 35

solid metal

Question 36

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

Answer 36

conduction

Question 37

the transfer of heat through empty space is called...

Answer 37

radiation

Question 38

heat transfer within a fluid is called...

Answer 38

convection

Question 39

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

Answer 39

eventually stop

Question 40

according to Wegener's hypothesis of continental drift...

Answer 40

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

Question 41

continental plates pull apart divergent boundaries on land ... form

Answer 41

rift valleys

Question 42

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

Answer 42

asthenosphere

Question 43

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

Answer 43

Convection currents

Question 44

earth quakes produce ...

Answer 44

seismic waves

Question 45

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

Answer 45

conduction

Question 46

the hypothesis of ... was that there was on super continent

Answer 46

Alfred wegener

Question 47

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

Answer 47

fossils

Question 48

energy through a substance that warms our feet is called ...

Answer 48

radiation

Question 49

the process of ... that adds new ocean floor

Answer 49

sea floor spreading

Question 50

two of earth's plates slips past each other along a ... boundary

Answer 50

transform

Question 51

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

Answer 51

Basalt

Question 52

the ship shows that the youngest rocks are found ...

Answer 52

mid ocean ridge

Question 53

subduction occurs where there are ...

Answer 53

deep ocean trenches

Question 54

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

Answer 54

plate tectonics

Question 55

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

Answer 55

Plate tectonics

Question 56

a continental plate and a oceanic plate collide at a ...

Answer 56

convergent boundary

Question 57

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

Answer 57

subduction

Question 58

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

Answer 58

pangaea

Question 59

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

Answer 59

core

Question 60

geologists learn about earth's interior by studying ... through earth

Answer 60

evidence