7Th Science Chapter 5 2010

Front 1

The ____ is the layer on earth made up of rocks basalt and granite.

Back 1

CRUST

Front 2

What happens beneath the Earth's surface to TEMPERATURE AND PRESSURE, when you go deeper?

Back 2

BOTH INCREASE

Front 3

How do geologists observe Earth's interior?

Back 3

THEY RECORD AND STUDY SEISMIC WAVES

Front 4

NAME the different parts of Earth starting on surface.

Back 4

CRUST, MANTLE, OUTER CORE, INNER CORE

Front 5

Earth's mantle is described how?

Back 5

A LAYER OF HOT ROCK

Front 6

Earth's inner core is what?

Back 6

a dense ball of solid metal

Front 7

Earth's magnetic field results from the spinning of the ?

Back 7

INNER CORE

Front 8

THE outer most layer of the Earth is called ___?

Back 8

CRUST

Front 9

_____ is a measure of how much mass there is in a volume of substance.

Back 9

DENSITY

Front 10

Pressure ______ from Earth's surface toward the center.

Back 10

INCREASES

Front 11

Geologist study ___ to learn about Earth's interior?

Back 11

SEISMIC WAVES

Front 12

SCIENTISTS THINK THAT THE ___ SPINS TO PRODUCE THE EARTH'S MAGNETIC FIELD.

Back 12

inner core

Front 13

Which part of the mantle is made of soft rock that bends like plastic?

Back 13

ASTHENOSPHERE

Front 14

Which layer of Earth is made up partly of crust and partly of mantle material?

Back 14

LITHOSPHERE

Front 15

Oceanic crust isd made up mostly of an ignaeous rock called what?

Back 15

basalt

Front 16

Earth's solid inner core spins inside the hot, molten metal of which layer?

Back 16

THE OUTER CORE

Front 17

ASTHENOSPHERE IS PART OF THE __?

Back 17

MANTLE

Front 18

Overall which layer is thickest?

Back 18

MANTLE

Front 19

Pressure increases with depth toward the center of Earth. In which layer would you expect pressure to be the greatest>

Back 19

INNER CORE

Front 20

On which layer of Earth do plates float?

Back 20

THE ATHENOSPHERE

Front 21

When you touch a hot pot, the heat moving to your hand is called ____ ___.

Back 21

heat transfer

Front 22

Transfer of heat through space is called ____?

Back 22

RADIATION

Front 23

The transfer of heat by the movement of heated fluids is called ______.

Back 23

CONVECTION

Front 24

When you touch a hot plate the transfer of heat from the PLATE TO YOUR HAND is called ?

Back 24

CONDUCTION

Front 25

RADIATION IS ____________?

Back 25

the energy from sun that warms your face

Front 26

A Scientist thinks that convection currents flow in Earth's

Back 26

Asthenosphere

Front 27

Heat is transferred in fluid by ___?

Back 27

convection currents

Front 28

When you remove the heat source from fluid, convection currents do what?

Back 28

EVENTUALLY STOP

Front 29

Convection currents form in the mantle when heated material become _____ dense?

Back 29

LESS

Front 30

In the asthenosphere, heat is transferred as soft rock flows slowing in cycles known as _____ _______?

Back 30

convection currents

Front 31

According to Wegeners hypotheisis of continental drift wht happend to the continents?

Back 31

They were once joined together into a single landmass

Front 32

What is Pangaea?

Back 32

Name of a super continent that existed supposedly millions of years ago. (Wegener believed this)

Front 33

What is continental drift?

Back 33

the theory that all continents were once joined as a single super continent and have since drifted apart

Front 34

Trace of an ancient organism preserved in rock is called ___?

Back 34

fossil

Front 35

What evidence was not used by Wegener to support continental drift?

Back 35

Evidence from HUMAN REMAINS

Front 36

Why did most geologist reject Wegener's theory?

Back 36

Wegener couldn't identify a force that could move continents

Front 37

What evidence did Wegener use in support of his theory?

Back 37

fossils

Front 38

What is the longest chain of mountains in the world?

Back 38

The mid-ocean ridge

Front 39

What did scienists use in 1900's to map the mid-ocean ridge?

Back 39

SONAR

Front 40

During sea-floor spreading where does molten material rise from the mantle and erupt?

Back 40

mid-ocean ridge

Front 41

What adds new crust to the ocean floor along sides of mid ocean ridge?

Back 41

sea-floor spreading

Front 42

Where does most of the mid-ocean ridge lay?

Back 42

Under the ocean

Front 43

How did scientist discover the age of the rocks farther away from mid-ocean ridge were older than those near it?

Back 43

determining age of rocks as they drilled on sea floor

Front 44

What did scientists see when they observed the mid-ocean ridge from a submersible?

Back 44

Rocks formed by the eruption of molten material from MANTLE

Front 45

iS OCEAN CRUST NEAR THE MID-OCEAN RIDGE YOUNGER OR OLDER ?

Back 45

YOUNGER

Front 46

The process by ehich ocean floor sinks through a deep-ocean trench and back to the matle is called?

Back 46

subduction

Front 47

Why is old oceanic crust more dense than new oceanic crust?

Back 47

Because it is cool

Front 48

If subduction occurs faster than ocieanic crust can be created then an ocean will ______

Back 48

SHRINK

Front 49

Subduction occurs where?

Back 49

THE OCEAN CRUST BENDS DOWN TOWARD THE MANTLE AT A deep ocean trench

Front 50

An ocean plate plunges beneath a trench and back into the mantle in a process known as what?

Back 50

subduction

Front 51

When two plates of differing denstiy collide what forms?

Back 51

deep ocean trench

Front 52

most geologist hold to the ____ as the cause of the movements of Earth's plates?

Back 52

convection currents in the asthenosphere

Front 53

Which theory states that pieces of the Earth's lithosphere are in constant slow motion/

Back 53

plate techtonics

Front 54

Collision of two pieces of continental crust at a converging boundary produces a ____ ____?

Back 54

mountain range

Front 55

A well tested concept that explains a wide range of observations is ________?

Back 55

scientific theory

Front 56

The lithospher is broken into sections called ____ _____ which float on top of each other.

Back 56

plate techtonics