2025 Final Review

What is a volcano?

• A large mountain made only of ice

• A hill formed by wind

• An opening in Earth's crust where magma erupts

• A deep hole in the ocean

What often triggers a volcanic eruption?

• Rainfall

• High winds

• Pressure from magma

• Erosion of rocks

Which gas is commonly released before a volcanic eruption?

• Oxygen

• Sulfur dioxide

• Carbon monoxide

• Hydrogen peroxide

What tool measures ground tilt near a volcano?

• Seismograph

• Tiltmeter

• Barometer

• Altimeter

What is a volcanic hazard map used for?

• Finding dinosaur fossils

• Predicting earthquakes

• Identifying eruption risk zones

• Calculating temperature of magma

Which of these is NOT a type of volcano?

• Shield

• Cinder cone

Where do most volcanoes form?

• In the center of continents

• At plate boundaries

• On sandy deserts

• In polar regions

Which part of the Earth stores magma?

• Crust

• Mantle

• Lithosphere

• Outer core

Which of the following can signal an upcoming eruption?

• Sudden cold spells

• Decreased gas emissions

• Increased earthquake activity

• Heavier rainfall

Who monitors volcano activity using technology?

• Meteorologist

• Seismologist

• Volcanologist

• Archaeologist