sea-floor spreading copy the following map of the ocean floor between continents. label the parts of...

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Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along.

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Page 1: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Copy the following map of the ocean floor between continents.

Label the parts of your map as we go along.

Page 2: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Mantle

Oceanic crust

Mid-ocean ridge

Convection currents in the asthenosphere push the crust apart.

Page 3: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Magma

Mantle

Oceanic crust

Mid-ocean ridge

Page 4: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Magma

Mantle

Oceanic crust

Sea-floor spreading

Mid-ocean ridge

Sea-floor spreading:

New magma is pushed up at the mid-ocean ridge, which pushes the older

rock away.

Page 5: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Magma

Mantle

Oceanic crust

Sea-floor spreading

Mid-ocean ridge

Newly formedoceanic crust

Page 6: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Magma

Mantle

Oceanic crust

Sea-floor spreading

Mid-ocean ridge

Newly formedoceanic crust

Old oceanic crust

Page 7: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Magma

Mantle

Oceanic crust

Sea-floor spreading

Mid-ocean ridge

Newly formedoceanic crust

Old oceanic crust

Tren

ch

Continentalcrust

Page 8: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Magma

Mantle

Oceanic crust

Sea-floor spreading

Mid-ocean ridge

Newly formedoceanic crust

Old oceanic crust

Tren

ch

Continentalcrust

Subduction: Old oceanic

crust is pushed under a continent causing the rock to melt back into

magma in the mantle.

Page 9: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Mid-ocean ridge

Molten material

Oceanic crust

Deep-ocean trenches

eruptsthrough

forms

subductedthroughforms

Page 10: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Mid-ocean ridge

Molten material

Oceanic crust

Deep-ocean trenches

eruptsthrough

forms

subductedthroughforms

Page 11: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Mid-ocean ridge

Molten material

Oceanic crust

Deep-ocean trenches

eruptsthrough

forms

subductedthroughforms

Page 12: Sea-Floor Spreading Copy the following map of the ocean floor between continents. Label the parts of your map as we go along

Sea-Floor Spreading

Mid-ocean ridge

Molten material

Oceanic crust

Deep-ocean trenches

eruptsthrough

forms

subductedthroughforms