Geography - Unit 2 - Physical Interactions

What is "Geologic Fit" proof of the continental drift theory?

• Volcanos on all continents are part of the same chain of mountains

• There are mountains and rock formations of similar age/structure on separate continents

• Rocks found in North America and Eurasia have nothing in common

• Geological features of Mars and Earth are similar

Answer explanation

What is "Climate Fit" proof of the continental drift theory?

• Climates on all continents are the same

• Ice sheets once covered parts of Africa, Australia, South America, and India

• Climates on all continents never changed

• Australia has the same climate as North America

Answer explanation

How many major plates are there?

Answer explanation

List 5 major tectonic plates

Answer explanation

1. Eurasian plate

2. Antarctic plate

3. African plate

4. Australian plate

5. North American plate

What tectonic plate is Canada found on?

Answer explanation

How do convection currents work?

Answer explanation

Convection currents are created as heat energy released from natural Earth processes rises and falls. The current pulls and drags the plates.

What is divergent plate boundary type (definition)?

Answer explanation

two plates moving away from each other

Can you give an example of divergent plate boundary type (specific place on planet Earth)?

Answer explanation

Mid-Atlantic Ridge - North American and Eurasian Plates are separating

Can you give some examples of divergent plate boundary type - what geological processes take place in this case?

Answer explanation

- geysers

- earthquakes

- volcanos

- new crust is formed

- seafloor spreading

What is convergent plate boundary type (definition)?

Answer explanation

1) The heavy oceanic plate will subduct under the lighter crustal plate (subduction) (BC coast + Pacific Ocean)

or

2) two continental plates will collide and rise up (collision) (Himalayas)