IQWST - PS3 - Lesson 4.1: What Makes the Plates Move?

IQWST - PS3 - Lesson 4.1: What Makes the Plates Move?

Learning Target

I can describe the flow of energy that drives seafloor spreading.

I can explain what causes seafloor spreading

• I have investigated convection in a liquid

• I can design an experiment to explore the role of temperature on the form of a plastic material

Layers of the Earth

• The plates sit on top of the mantle (crust)

• The mantle is solid in some places and liquid in others (think silly putty)

• 
  

Multiple Choice

What does it mean when I say that the mantle is "plastic"?

• It is made of plastic

• It is non recyclable

• It is hot

• It is solid but flexible

Open Ended

What happened when food coloring hit the cool water vs when the food coloring hit the hot water?

https://www.youtube.com/watch?v=Z6PB7IKeHs4&t=48s

Open Ended

Why do you think that the food coloring spreads so much faster in the warm water?

https://www.youtube.com/watch?v=0mUU69ParFM

Open Ended

What happened when the hot water was added to the model?

Multiple Choice

Hot air/water (fluids)

• rise

• sink

Multiple Choice

When the water gets far from the heat source, what happens?

• It cools down

• It heats up

• It stays the same heat

https://www.youtube.com/watch?v=RA2-Vc4PIOY&t=241s

Poll

How would you rate your understanding of convection?

• I do not understand convection at all

• I think I understand convection, but I have some questions/need some practice

• I definitely understand convection

Open Ended

What questions do we have about convection? What do we not yet know?