Tectonic plates can include

Both Continental & Oceanic Sea-floor crust

Our modern climates have been affected by the past movements of

Tectonic plates converging, creating mountains & ecosystems

What is the "Ring of Fire"?

An area of volcanoes around the edge of the Pacific Ocean

What is a TRANSFORM boundary?

2 plates sliding past each other laterally

Magnetic patterns in the ocean crust were puzzling because they:

Showed alternating bands of normal & reversed polarity

Where can we find the oldest ocean floor crust material

At the subduction zone in a sea floor trench

The types of boundaries you find in ocean floor crust plates are

Can be any of the 3 types - convergent, divergent, transform

What is a SUBDUCTION ZONE

Where a sea floor plate goes beneath a continent

Where is the oldest sea floor rocks found?

At the leading edge of a subduction zone sea floor plate

What is the difference between MAGMA and LAVA

Lava flows out of a volcano and magma is beneath it

The Pacific "Ring of Fire" is a line of active

All of these are correct answers

What is a DIVERGENT boundary?

2 plates that are pulling apart from each other

studbud

Plate Tectonics

21 termsStudBud Administration158 plays

Earth Science for 9th graders

Flashcards21 cardsFPractice quizPHost liveL

Questions 21

Answers

1
Tectonic plates can include
Only Continental crust
Only the Asthenosphere
Both Continental & Oceanic Sea-floor crust
Only Ocean sea-floor crust
2
Our modern climates have been affected by the past movements of
The water cycle
Populations of organisms
Human activity & reliance on fossil fuels
Tectonic plates converging, creating mountains & ecosystems
3
Which type of boundary is SEA-FLOOR SPREADING?
Divergent boundary
Transform boundary
Subduction zone
Convergent boundary
4
What is the "Ring of Fire"?
An area of volcanoes around the edge of the Pacific Ocean
Something found in The Lord of the Rings movie
A cluster of volcanoes in the Horn of Africa
A ring of volcanoes in Hawaii
5
What is a TRANSFORM boundary?
2 plates pulling away from each other
2 plates sliding past each other laterally
2 plates that are subducting into the mantel layer
2 plates coming together
6
Magnetic patterns in the ocean crust were puzzling because they:
Indicated that all ocean rocks have reversed polarity
Showed alternating bands of normal & reversed polarity
Contradicted the idea of sea-floor spreading
Were not symmetrical
7
What is the name of the force acting on the leading edge of a subducting ocean floor plate?
Tectonic plate drag
Convection
Slab pull
Ridge push
8
What is a CONVERGENT boundary
2 plates sliding past each other laterally
2 plates coming together
2 plates pulling apart from each other
2 plates that are subducting into the mantel layer
9
Where can we find the oldest ocean floor crust material
At the mid-ocean ridge
In the mesosphere
At the subduction zone in a sea floor trench
At an undersea volcano as it spews molten lava
10
The types of boundaries you find in ocean floor crust plates are
Are divergent - mid-ocean ridges create sea-floor spreading
Are divergent and convergent only
Can be any of the 3 types - convergent, divergent, transform
Are convergent - subduction zones are sea-floor trenches
11
What type of boundary cause MOUNTAIN RANGES to form?
Divergent
Transform
Subduction Zone
Convergent
12
Wegener's idea of Pangea separating into today's continents - "Continental Drift" was proven by
Just looking at the outlines of today's continents
Sea-floor spreading
Looking at similar fossils from different continents
Radio-carbon dating of rock samples from different places
13
Where can we find the youngest crust at the bottom of the world's oceans
At the subduction zones between ocean crust and continents
At the mid-ocean ridges
In sea-floor trenches
In magnetic rock layers
14
Where can you find a SEA FLOOR TRENCH?
At a subduction zone
At the mid-ocean ridge
Close to the jetty at a harbor entrance
Where scuba divers have been digging
15
What is a SUBDUCTION ZONE
Where a sea floor plate goes beneath a continent
Where the sea floor slides underneath the mid ocean ridge
Where the sea floor rises up at the mid ocean ridge
Where the sea floor is the thinnest
16
Where is the oldest sea floor rocks found?
At the mid ocean ridge
At a rift valley in the mid ocean
At the half way point between the mid ocean ridge & a coast
At the leading edge of a subduction zone sea floor plate
17
What force is created with mid-ocean ridge volcanic lava creating new sea floor plate
Slab pull
Convection
Divergent energy
Ridge push
18
The San Andreas Fault that runs length-wise through California is a
Transform boundary
Convergent boundary
Divergent boundary
Subduction zone
19
What is the difference between MAGMA and LAVA
Magma is cooler and Lava is hotter
Lava flows out of a volcano and magma is beneath it
Lava is white and Magma is red
Magma is what flows out of a volcano and Lava is beneath it
20
The Pacific "Ring of Fire" is a line of active
Volcanoes & earthquake hot spots that encircles the Pacific
Is the most Tectonically Active area on the surface of Earth
Causes loss of human life & damages structures frequently
All of these are correct answers
21
What is a DIVERGENT boundary?
2 plates that are sliding past each other laterally
2 plates that are buckling upward
2 plates that are pulling apart from each other
2 plates that are coming together

Plate Tectonics Flashcards | StudBud