Earth's layers & Continental Drift

Earth's layers & Continental Drift

By Eryn Keating

Multiple Select

Earth's layers are divided based on which 2 variables?

• Composition (what it's made of)

• State of matter (solid, liquid, semi-solid)

• The thickness of each layer (miles or Kilometers)

• The temperature (how many degrees)

Multiple Choice

As it gets deeper in the Earth, both the temperature and density:

• Increase

• decrease

• fluctuate

Multiple Choice

How did scientists discover the Earth's layers?

• By studying how earthquake waves travel through Earth

• By drilling to the center of Earth

• By using x-rays to image Earth's interior

Multiple Select

Which 2 layers of Earth are solid?

• Crust

• Mantle

• Outer Core

• Inner core

Multiple Choice

Which layer of Earth has convection currents?

• Crust

• Mantle

• Outer Core

• Inner core

Multiple Choice

Which layer of Earth is made of mostly Silicon & Oxygen (Silicate minerals like Quartz) ?

• Crust

• Mantle

• Outer Core

• Inner core

Multiple Select

Which 2 layers of Earth are made of mostly Iron ?

• Crust

• Mantle

• Outer Core

• Inner core

Multiple Choice

Why is the inner core solid?

• Because it is so hot

• Because it is under pressure from the layers above it

• Because iron is a solid metal

• Because it cooled and hardened as Earth formed

Multiple Select

How does Earth's rotation (spinning) and the iron core help protect Earth?

Choose 2 answers

• It forms the magnetosphere

• The gravitational forcefield holds the Moon

• It creates convection currents

• It helps protect us from Solar Winds

Multiple Choice

Which type of crust is younger, more dense, and mostly Basalt rocks?

• Continental

• Oceanic

Multiple Choice

Which type of crust is older, less dense, and mostly Granite rocks?

• Continental

• Oceanic

Multiple Choice

The hard, ridgid oceanic and continental crust that is broken into tectonic plates is also known as the:

• Asthenosphere

• Lithosphere

• Upper Mantle

• Mesosphere

Multiple Choice

Which type of heat transfer is responsible for Earthquakes and Volcanoes?

• Convection

• Conduction

• Radiation

Multiple Choice

Approximately how many years ago did the super-continent Pangaea exist?

• 25 million years ago

• 250 million years ago

• 2.5 billion years ago

• 2,500 years ago

Multiple Choice

What geologic features formed as a result of the land masses colliding to form Pangaea ?

• Mountains

• Valleys

• Oceans

• Volcanoes

Multiple Choice

When Pangaea split apart, what grew larger as the continents rifted farther apart?

• Atlantic Ocean

• Pacific Ocean

• Appalachian Mountains

• Island arcs

Multiple Choice

What evidence matched up on continents now separated far from each other?

• Fossils

• Mountain ranges

• Continental shapes

• All of these matched up