Continental Drift and Plate Tectonics Worksheet

Which layer do tectonic plates move on?

• Crust

• Inner core

• Mantle

• Ocean

What did Alfred Wegener propose about the continents?

• A) Continents are fixed

• B) Continents formed mountains

• C) Continents were once joined together as Pangea

• D) Continents move because of volcanoes

How do South America and Africa support continental drift?

• They have similar climates

• Their shapes fit together like puzzle pieces

• Both have deserts

• They formed at the same time

Matching fossils found on widely separated continents suggest:

• The continents were always separated

• The continents were once joined

• Animals can swim across oceans

• Earth's climate never changed

Why are glacial grooves found on continents now far apart and warm?

• Glaciers only form in warm places

• Ancient glaciers were everywhere

• The continents moved from cold to warm regions

• Glacial grooves are not real evidence

Harry Hess helped prove plate tectonics by showing that:

• The continents were drifting

• There are fossils on the ocean floor

• New crust forms at mid-ocean ridges

• Volcanoes only occur on land

Which evidence supports sea floor spreading?

• Fossils in rocks

• Younger rocks at mid-ocean ridges

• Weather patterns

• Clouds above ridges

Which is an example of a divergent boundary?

• Himalayas

• Mid-Atlantic Ridge

• Andes Mountains

• San Andreas Fault

At a convergent plate boundary, you usually find:

• Mountains or volcanoes

• Ocean trenches

• Hot spots

• Earthquakes only

Which is caused by a convergent boundary?

• Great Rift Valley

• Aleutian Islands

• Mid-Atlantic Ridge

• San Andreas Fault