Plate Motion Lesson 2.5

Plate Motion Lesson 2.5

Identifying Plate Motion at a Plate Boundary

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​Lesson purpose: identify the divergent plate boundary between these two plates and use their understanding of divergent plate motion to explain how the Mesosaurus fossils got so far apart from each other

Poll

Do you think that this plate boundary is convergent or divergent?

• Convergent (collides)

• Divergent (different directions)

Multiple Select

What do you see along the plate boundaries? (check ALL that apply).

• Food

• Volcanic eruptions

• earthquakes

• mid-ocean ridge

Multiple Choice

What happens to the plates and the mantle at convergent plate boundaries, as plates move toward each other?

• Plates collide, one moves down into the mantle; creates a trench

• Plates move away from each other; creates a mid-ocean ridge

• Plate do not move

Multiple Choice

When one plate moves under the other (convergent), what landform forms?

• mid-ocean ridge

• trench

Multiple Choice

What happens to the plates and the mantle at divergent plate boundaries, as plates move away from each other?

• Plates melt and fall down

• Magma pushes in the middle and pushes the two plates away; forms a mid-ocean ridge

• Plates run into each other and form a mountain and trench

Multiple Choice

When plates move away from each other (divergent), what landform forms?

• trench

• mid-ocean ridge

• omelettes

Poll

With our new clues, which type of plate boundary do you think is between the South American Plate and African Plate?

• Divergent

• Convergent

Poll

Which piece of evidence was most convincing in helping you determine the type of plate boundary between these two plates?

• earthquakes & volcanoes

• trench

• mid-ocean ridge

• something else (raise your hand to share)

• ​We know a mid-ocean ridge was found at the plate boundary between South America and Africa.

• ​Mid-ocean ridges are only formed at DIVERGENT plate boundaries with rock from the mantle being added to both plates from the center.

• This is strong, convincing evidence that the plate boundary is divergent.

Multiple Choice

How does the landform evidence refute (go against) the claim that the plate boundary is a convergent plate boundary?

• there is a mid-ocean ridge at this plate boundary rather than a trench

• there is a trench at this plate boundary rather than a mid-ocean ridge

Multiple Choice

To examine in detail for a purpose

• convergent

• analyze

• microscope

​**Complete Schoology Question 3

Multiple Choice

What direction are these plates moving?

• Divergent (different directions)

• Convergent (colliding; towards each other)

Multiple Choice

When is our open note quiz for Plate Motion?

• TOMORROW (Friday) 10/7/22

• THIS IS NOT THE ANSWER

Multiple Choice

REVIEW: The plates of Earth’s outer layer moves slowly.

• TRUE

• FALSE

Multiple Choice

Earth’s outer layer is divided into sections called ________. 

• Oceans

• Plates

• Boundaries

• Rock

Multiple Choice

Geologists look for patterns in landforms and in geologic events in order to better understand Earth.

• TRUE

• FALSE

Multiple Choice

What is directly under the water/ocean of the Earth?

• lava

• more water (there is no bottom to the ocean)

• solid rock

Multiple Choice

Earth's outer layer is NOT made of hard, solid rock

• true

• false