Continental Drift T5 Ex1

What was the name of the supercontinent Wegener proposed?

• Gondwana

• Pangaea

• Laurasia

• Sacremento

Why did many scientists reject Wegener's theory?

• He had no evidence

• He couldn’t explain how continents moved

• His ideas lacked fossils

• He did not know dinosaurs wuould die

Look at the image. What evidence shows continents fit like puzzle pieces?

• Bird fossils

• Volcanic activity

• Similar coastlines

• Google Maps

How do fossils support continental drift?

• Identical fossils are found on separate continents

• Fossils only exist on one continent

• Fossils prove volcanic eruptions

• Fossils can grow again

What is an index fossil?

• A rare fossil found only in mountains

• A fossil from only one time period

• A widespread fossil used to date rock layers

• A book in the library

Why are fossils in lower layers older?

• Layers form in order, oldest first

• Earth flips layers over time

• Lower layers contain newer fossils

• Layers at the top are best

How do matching fossils on different continents support drift?

• Animals swam across oceans

• Fossils formed independently

• Continents were once connected

• Fossils will float in the ocean

What supports Wegener's theory using rock layers?

• Rocks differ across continents

• Matching formations on continents

• No evidence from rocks

• All layers of rock contain the same fossils

What climate clues support continental drift?

• Fossils of tropical plants in Antarctica

• Ice fossils in deserts

• No climate evidence exists

• Windy at the beach

How does magma contribute to seafloor spreading?

• It melts existing crust

• It creates volcanoes only

• It cools and pushes crust outward

• It causes lava to flow