Convection & Sea Floor spreading

Who hypothesized the concept of continental drift?

• Harry Hess

• Alfred Wegener

• Charles Darwin

• Isaac Newton

Tags

NGSS.MS-ESS2-3

All are evidence to support the theory of continental drift EXCEPT?

• Climate chang

• Rainfall

• Land features

• Fossils

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Rocks on the sea-floor that lie in a pattern show a record of the reversal of Earth's _____________?

• magnetic field

• Deep-ocean trenches

• atmosphere

• diversity

Tags

NGSS.HS-ESS1-5

What happens to the ocean floor during the process of subduction?

• It rises to form islands

• It sinks back into the mantle

• It expands and forms new crust

• It remains unchanged

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What type of rocks provide evidence of Earth's magnetic field reversals?

• Sedimentary rocks

• Igneous rocks

• Magnetic stripes

• Metamorphic rocks

What is the role of seafloor spreading in continental movement?

• It prevents continents from moving

• It acts like a conveyor belt, carrying continents

• It causes continents to sink

• It has no effect on continents

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Match he following numbers in order A - D, to complete the process of convection in the mantle.

1. 1. material cools, becoming denser, then begins to fall due to gravity

2. 2. less dense material is heated and begins to rise

3. 3. material is heated again by core, lowerng the density

4. 4. rising material hits lithosphere and slides, moving plates with it

Tags

NGSS.MS-ESS2-1

Where are convection currents found?

Convectin currents are caused by differences in what two things?

Tags

NGSS.MS-ESS2-6