Science plate tectonics and volcanoes

1. Who is the scientist who said that the continents were once joined togetherin a single landmass.

• Darwin

• Wegener

• Plate Tectonic

• Clear

2. What is Wegener's theory name?

• Continental drift

• Plate Tectonic

• sea floor spreading

• oceanic crust

Technology used in the mid 1900's to map the mid ocean ridge

• plate tectonic

• oceanic crust

• molten material

• sonar

Old oceanic crust is_________ than new oceanic crust

The movement on Earth's plates is caused by ___________ currents in the mantle.

Geological theory that states that pieces of Earth's litosphere are in constant, slow motion.

• oceanic crust

• wegener

• plate tectonic

• continental drift

A collision between 2 pieces of continental crust at converging boundary produces a

• mountain range

• continental crust

• litosphere

• boundary

Place where two plates slip past each other is known as

• ocean ridge

• ocean crust

• mountain range

• transform boundary

What is the process that continually adds new crust to the ocean floor along mid-ocean ridges?

• molten material

• plate tectonic

• sea floor spreading

• deep ocean trench

When continental plates pull apart a ____________ boundary on land, plates form.