Plate Boundaries Notes & Practice

Read ALL the words on the following slides. I'll show you what they notes sheet should look like but you are responsible for knowing the information here!

What moves the plates?

​The plates that make up the earth's surface move because of 3 forces. We'll look at those 3 forces first.

These aren't in your notes but you should know this.

​

​We'll look at each of these four in detail.

Mid-Atlantic Ridge

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<------ -------->
spreading apart

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mostly in the ocean

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newest crust (Basalt)

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lava oozes up at the underwater "mountains

​

Multiple Choice

The line through the middle is the divergent boundary.

Where is the oldest crust found?

• A

• B

• C

• Can't tell

Multiple Choice

How old are the rocks at location B?

• 0 years

• 2 years

• 4 years

• 8 years

Multiple Choice

Think about where the divergent boundary is in the Atlantic Ocean.

In this map of the Atlantic Ocean, where are the oldest rocks found and how do you know?

• Location D because its further from the center boundary

• Location D because its closer to the center boundary

• Location E because its further from the center boundary

• Location E because its further closer to the center boundary

Draw

The attached image shows the age of the Atlantic Ocean sea floor in millions of years. Draw an easy to see line along the divergent boundary.

Multiple Choice

According to the map, what is the age of the oldest rocks in the Atlantic Ocean?

• 10-20 million years

• 80-100 million years

• 100-130 million years

• 130-180 million years

Multiple Choice

You are reading a proposal requesting money to search for evidence of a crater that caused a mass extinction on Earth 245 million years ago. The team is proposing to search a poorly explored area of the floor of the Atlantic Ocean between South America and northern Africa.

Would you fund this project?

• Yes, the ocean floor is a weird place

• No, the seafloor can't be 245 million years old

• No, we can't see the ocean floor

Himalayan Mountains

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lots of earthquakes
no volcanoes

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Ring of Fire around the Pacific Ocean

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Lots of both!

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island arc like Japan

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​The crust gets pushed down where it's hot so it melts and comes back up as magma.

Draw this picture in your notes in the blank space under where you wrote the information

Hotspot

Identify the subduction zone

Open Ended

Find the ancient impact crater where a giant comet collided with Earth causing a depression in the ocean floor.

What will happen to the ancient impact crater as the oceanic plate moves?

Hotspot

Identify the convection current

Hotspot

Identify the trench

Multiple Choice

Consider the rocky and crater-covered moon. Its very old surface has remained virtually unchanged over the last few billion years. What do you think the interior of the moon is like and why?

• The moon's interior is hot & active because of the constant changing surface.

• The moon's interior is hot & active because of the surface is unchanged.

• The moon's interior is cold & inactive because of the constant changing surface.

• The moon's interior is cold & inactive because of the surface is unchanged.

Drag and Drop

If a new planet were discovered, we would look for evidence like ​

Placeholder

because that would mean there is molten material under the surface. Also ​

Placeholder

would mean there are earthquakes and moving plates.

Drag these tiles and drop them in the correct blank above

volcanoes

cracks in the crust

frozen lakes

giant icebergs

static mountains

Labelling

Label the following structures in the diagram.

Drag labels to their correct position on the image

Volcanoes

Subduction Zone

Continental Plate

Ocean Plate

Ocean trench

Multiple Choice

Where was the hexagon in the past?

• A

• B

• C

• D

• in the same place

Multiple Choice

Where will the hexagon be in the future?

• A

• B

• C

• D

• in the same place

earthquakes, no volcanoes

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San Andreas Fault

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slide past

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This is what your notes should look like

Multiple Choice

What is the force that moves the continents?

• Conduction

• Convection

• Radiation

• Conveyor belts

Multiple Choice

The process where dense oceanic crust slides under another plate and is melted/recylced is called ___________.

• seafloor spreading

• subduction

• continental drift

• recycling

Multiple Choice

Continental plate collides with another continental plate creates

• volcanoes

• earthquake

• trench

• folded mountains

Multiple Choice

Plates boundary where plates slide or move past each other

• divergent

• continental drift

• transform

• convergent

Multiple Choice

The type of geological event that occurs at ALL plate boundaries

• folded mountains

• earthquakes

• volcanoes

• tsunamis

• trenches

Multiple Choice

Ocean plate collides with ocean plate creates

• mid- ocean ridge

• sea floor spreading

• earthquakes

• volcanic ark of islands

Multiple Choice

What plate boundary is shown in the picture?

• convergent

• divergent

• transform

• neither

Multiple Select

What plate boundaries would experience volcanic activity (magma coming to the surface)? (choose all that apply)

• Divergence at a mid ocean ridge

• Convergence between an ocean plate and continental plate

• Transform fault where one plate slides past another plate

• Convergence between a continental plate and continental plate

Multiple Choice

What type of volcanoes would you experience at a convergent plate boundary with two continental plates?

• Explosive/dangerous composite volcanoes

• Quiet Eruption Shield Volcanoes

• Volcanic Fissures

• No Volcanoes

Multiple Choice

What type of stress/faults are associated with divergent plate boundaries

• compressional/normal

• compressional/reverse

• Tensional/normal

• Tensional/reverse

• Shear/strike-slip

Multiple Select

What features would form at a convergent plate boundary where an oceanic plate subducts under a continental plate?

• rift valleys

• trenches

• volcanic mountains

• mid ocean ridges