Key Ideas Video: Volcanoes

What are some of the natural features you can find in Yellowstone National Park?

• Deserts and sand dunes

• Coral reefs and beaches

• Rainforests and waterfalls

• Hot springs and geysers

What is a hotspot in geological terms?

• A place where the sun shines the most

• A spot with the highest mountain

• A location with a lot of rain

• An area where magma rises close to the Earth's surface

Tags

NGSS.HS-ESS2-3

How is the explosivity of a volcano measured?

• By the temperature of lava

• By the number of eruptions per year

• By the Volcanic Explosivity Index (VEI)

• By the Richter scale

What is a caldera?

• A mountain peak

• A type of hot spring

• A deep ocean trench

• A large crater formed after a volcanic eruption

Why is it safe to visit Yellowstone despite it being a supervolcano?

• The volcano is extinct

• Eruptions are not expected for thousands or millions of years

• The park is closed to visitors

• The magma has cooled completely