Layers of the Earth and Continental Drift Jeopardy Earth’s Interior Layers of the Earth Drifting Continents Seafloor Spreading 100 200 300 400 500 Inside Earth Chapters 1.1 – 1.4 FIX 22, 23, 19??

A _________ is one of the 7 great landmasses on earth. “Earth’s Interior” for 100 A _________ is one of the 7 great landmasses on earth.

continent

“Earth’s Interior” for 200 A geologist is a scientist who studies the ________ that make and shape planet Earth.

forces

“Earth’s Interior” for 300 Forces that BUILD UP mountains and landmasses are called ____________________

constructive forces

Forces that wear away mountains are called _____________________ “Earth’s Interior” for 400 Forces that wear away mountains are called _____________________

destructive forces

“Earth’s Interior” for 500 ________ waves occur during an earthquake, and geologists use them to learn about the interior of the earth.

Seismic waves occur during an earthquake, and geologists use them to learn about the interior of the earth.

The _______ is composed of the crust and upper mantle. “Layers of the Earth ” for 100 The _______ is composed of the crust and upper mantle.

The lithosphere is composed of the crust and upper mantle.

Which part of the earth is a dense ball of iron and nickel? “Layers of the Earth ” for 200 Which part of the earth is a dense ball of iron and nickel?

The inner core

“Layers of the Earth ” for 300 The upper mantle contains this soft, plastic-like layer called the _____.

The upper mantle contains this soft, plastic-like layer called the asthenosphere.

“Layers of the Earth ” for 400 Because earth has a spinning inner core, earth has poles and acts as a ________.

Because earth has a spinning inner core, earth has poles and acts as a magnet.

Name the 5 layers of the earth in order from outside to inside. “Layers of the Earth ” for 500 Name the 5 layers of the earth in order from outside to inside.

crust upper mantle lower mantle outer core inner core

Because earth has a spinning inner core, earth has poles and acts as a magnet.

scavenger

“Drifting Continents” for 100 Alfred Wegner believed all of earth’s continents were once joined together in a single landmass called _______.

Alfred Wegner believed all of earth’s continents were once joined together in a single landmass called Pangaea.

Explain the theory of continental drift. “Drifting Continents” for 200 Explain the theory of continental drift.

Many years ago, Pangaea began to break apart Many years ago, Pangaea began to break apart. The pieces drifted to their present day locations and are now known as our 7 continents.

Explain the fossil evidence for Continental Drift. “Drifting Continents” for 300 Explain the fossil evidence for Continental Drift.

Fossils of certain species have been found across several continents giving evidence that the continents were once connected.

Explain the landform evidence for Continental Drift. “Drifting Continents” for 400 Explain the landform evidence for Continental Drift.

Mountain ranges in Africa line up with mountain ranges in South America giving evidence for Continental Drift.

“Drifting Continents” for 500 Explain the glacial evidence for Continental Drift.

Deep scratches in rocks from glaciers have been found on South America, Africa, and India whose climates are much too warm for glaciers today.

“Seafloor Spreading” for 100 Learning that the seafloor ________ gave the best evidence to Wegener’s theory of c__________ d________.

Learning that the seafloor spreads gave the best evidence to Wegener’s theory of continental drift.

Name this region of the ocean floor and explain what happens here. “Seafloor Spreading” for 200 Name this region of the ocean floor and explain what happens here.

This is the mid-ocean ridge This is the mid-ocean ridge. Here, magma erupts, pushing the oceanic crust toward the subduction zones.

Name these regions of the ocean floor and explain what happens here. “Seafloor Spreading” for 300 Name these regions of the ocean floor and explain what happens here.

These are the deep-ocean trenches These are the deep-ocean trenches. Here the oceanic crust subducts under the continental crust going back into the mantle and becoming magma once again.

“Seafloor Spreading” for 400 Why does the ocean crust turn to magma when it subducts below the continental crust.

The oceanic crust turns to magma because of heat and pressure.

“Seafloor Spreading” for 500 Explain why the theory of sea-floor spreading supports the theory of continental drift.

Knowing that the sea-floor spreads gives evidence that the oceanic crust pushes against the continental crust, causing the continents to move centimeters per year.