Continental drift and seafloor spreading

Multiple Choice

What is the topic of these notes?

• Ocean currents and weather patterns
• Fossil records and ancient climates
• Volcanic activity and earthquakes
• Continental drift and plate tectonics

Multiple Choice

What is a scientific theory?

• A guess for how something works

• An explanation for how or why something occurs in the natural world.

Fill in the Blank

The name of the supercontinent Alfred Wegener proposed was ___________.

Multiple Choice

What does Pangaea mean?

• Pangaea means 'ocean of the world'.
• Pangaea means 'land of the dinosaurs'.
• Pangaea means 'all lands'.
• Pangaea means 'single continent'.

Open Ended

Explain the Theory of continental drift.

Multiple Choice

Who is Henry Hess?

• Henry Hess is a geology that discovered 'sea floor spreading'

• Henry Hess is a famous painter from the 19th century.
• Henry Hess is an engineer and researcher known for his work in materials science.
• Henry Hess is a renowned chef known for Italian cuisine.

Multiple Choice

What is sea floor spreading?

• The sinking of oceanic crust into the mantle at ocean trenches.
• The movement of tectonic plates towards each other at subduction zones.
• Sea floor spreading is the formation of new oceanic crust at mid-ocean ridges as tectonic plates diverge.
• The process of ocean water evaporating to form clouds.

Fill in the Blank

They mapped the sea floor using _________ waves

Multiple Choice

Where is the Mid-Atlantic Ridge?

• In the Pacific Ocean, between North America and Asia.
• In the Indian Ocean, between Africa and Australia.
• In the Atlantic Ocean, between North America and Eurasia, and between South America and Africa.
• In the Arctic Ocean, between Greenland and Norway.

Multiple Choice

What was the name of the ship collecting samples from the ocean floor?

• Endeavour
• Nautilus
• Titanic
• Glomar Challenger

Don't forget to summarize the diagram!

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There is a little box for you to do this in your notes

Open Ended

What is the evidence for sea floor spreading? (Hint: there is more than one)

https://bit.ly/3fbES4E