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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
Plate Tectonics
23 terms
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166 plays
A unit of study for Earth Science
Flashcards
23 cards
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Practice quiz
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Host live
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Questions
23
Answers
1
Why can't we dig through the inner core?
it's too much like gelatin
The continents are drifting so it's hard to line it up
Too hot, too much high pressure and too solid.
Because it doesn't really exist
2
What causes convection currents in the mantle?
Heat from the inner core
Heat from the core and the mantle itself
Gravity from the moon
Heat from the sun
3
Sea-floor spreading is best described as...
...a living entity
...a process
...an extinct feature
...a mystery
4
Earth's outermost structure is formed by...
a cold, brittle lithosphere
a hot convecting mantle
the aethensosphere
a dense metallic core
5
What is Pangaea?
An island that of fossils that prove Wegener's theory
A supercontinent that drifted together 300 million years ago
A layer of the Earth
An asteroid that adds heat to the Earth's inner core
6
How much of the mantle makes up the Earth's mass?
about 90%
about 99%
about 70 - 80%
about 25%
7
What process continually adds materials to the ocean floor?
sea-floor spreading
transverse boundaries
sliding boundaries
pyroclastic flows
8
What drives the movement of plate tectonics?
convection currents in the mantle
The Earth's magnetic field in the core
Gravitation pull of the sun
The ocean tides
9
The inner core is...
a loose ball of liquid copper
a loose ball of liquid nitrogen
a dense ball of solid metal
a dense ball of solid aluminum
10
Why doesn't the ocean floor keep getting wider and wider from sea-floor spreading?
The floor rises to form islands
It begins to melt and dissolve at the edges
The floor pushes up to form mountains on beaches
The floor sinks beneath the deep ocean trenches
11
There are three types of heat transfer and they are...
radiation, convection, and infection
radiation, conduction, and induction
radiation, confection, and conduction
radiation, conduction, and convection
12
The outer core is...
a layer of hard steel
a layer of hydrogen gas
a layer of marble
a layer of molten metal
13
In the red drop demonstration with beaker #1 and #2- what happened to the dye ?
The red drops settled at the top like the crust
The red drops sank below like subduction
The red drops spread in the water like core heat transfer
H20 in the bottom of the beaker warms, is less dense & rises
14
What is the process by which the ocean floor sinks beneath a deep-ocean trench?
deduction
subduction
convection
conduction
15
This theory states that parts of Earth's lithosphere are in slow constant motion.
The theory of continental drift
The theory of energy conservation
The theory of relativity
The theory of plate tectonics
16
What about the crust prevents you from digging through the Earth to get to the other side?
it's against the law
Crust too thick and covers all of the Earth
the tools are only found in the museum
the moon's gravity is too strong
17
In a bowl of soup cooler denser soup sinks to bottom of a pan & hotter less dense soup rises
This is radiation
this is conduction
this is convection
this is clam chowder
18
In the Fish Tank demonstration the model was related to...
convection in the mantle
sea-floor spreading
heat transfer from the sun
radiation from the lithosphere
19
What 3 things did Wegener use as evidence for continental drift?
air samples, land features and ancient climatic zones
Fossils, air samples, and land features
fossils and mountains
Fossils, ancient climatic zones, and land features
20
About 40 meters below Earth's crust is a layer of hot rock called...
the mantle
the crust
the inner core
the outer core
21
Select the three types of plate boundaries.
sliding boundary
inward-outward boundary
colliding boundary
spreading boundary
22
According to Structure of the Earth Video, the Earth measures...
More than 100,000 km across
more than 2,000 km across
More than 80,000 km across
More than 12,000 km across
23
Evidence for plate tectonics comes from...
...fossils and ancient climatic zones
...volcanoes
...the fit of the continents
...the location of earthquakes
