Plate Boundaries Frame it Up & CBN

Plate Boundaries Frame it Up

by Kylie Hockersmith

​Convergent Plate Boundaries

​Any time plates move towards eachother, you have a convergent plate boundary, however, there are three different kinds.

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​The first kind of convergent plate boundary is called a normal "Continental- Continental Convergent Boundary"

Its motion is when two continental plates move towards each other or collide.
When this happens(because they are the same density) they crumble up and for mountains

​Oceanic-Continental Convergent Boundary

​The second type of convergent plate boundary is called a oceanic-continental boundary.

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​This is when a dense and heavy oceanic plate and a less dense continental plate collide. The oceanic plate subducts under the continental plate

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​This creates deep ocean trenches, and lines of volcanoes

​Oceanic-Oceanic Convergent Boundar

​The last type of convergent boundary is an oceanic-oceanic convergent boundary.

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​This occurs when two oceanic plates collide and the older, denser one will sink beneath the younger, less dense one.

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​A deep ocean trench will form, and a line of volcanoes

​Divergent Boundary

​The next type of boundary is called a divergent boundary. This is when two plates move away from each other

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​Mid ocean ridges form along divergent plate boundaries. It also forms new crust, and rift valley's

​Transform Boundary

​The last type of boundary is called a transform boundary

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​This is when two plates slide past each other

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​This causes earthquakes to happen because the stress builds up when they get stuck and when it releases it causes vibrations.

Multiple Choice

Which theory, proposed by the scientist Alfred Wegener, states the continents have gradually moved over time?

• pangaea

• Plate tectonics

• Continental drift

Multiple Choice

Tectonic plates are part of earths

• outer core

• crust and upper part of the mantle

• inner core

Multiple Choice

Which of the following is the name given to the large supercontinent that was formed over 200 million years ago?

• pannotia

• pangaea

• gondwana

Multiple Choice

Which of the following was NOT evidence that Wegener used to prove his theory of continental drift?

• fossil evidence

• shape of continents

• convection currents

Multiple Choice

Which theory states that Earth's surface is broken up into moving plates?

• plate tectonics

• continental drift

• pangaea

Multiple Choice

What causes plates to move

• earthquakes

• convection currents

• magnetic fields

Multiple Choice

The location where two plates meet is known as

• faults

• plate boundaries

• trenches

Multiple Choice

A ______ boundary occurs when plates move away from each other

• divergent

• convergent

• transform

Multiple Choice

A _______ boundary occurs when plates move towards each other

• divergent

• convergent

• transform

Multiple Choice

A ______ boundary occurs when plates slide past each other horizontally

• divergent

• convergent

• transform

Multiple Choice

Which statement is true?

• plates are the same as continents

• earthquakes caused pangaea to break apart

• Plates move about 2-5 cm per year

Multiple Choice

Which statement is false?

• Wegeners theory was accepted by scientists during his time

• wegener was not able to explain the forces that caused the plates to move

• Wegeners theory was NOT accepted by scientists of his time

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​Now turn the paper over and color! Keep the graphic organizer, and color by number in your science folder until Monday!