Volcano Basics
What is magma called after it reaches Earth’s surface?
Lava
What causes most earthquakes?
Moving tectonic plates
What do we call a crack in Earth’s crust?
Fault
What is the point underground where an earthquake starts?
Focus
Which tool measures earthquake strength?
Richter Scale
Which seismic wave moves the fastest?
P-waves
What is the opening at the top of a volcano called?
Crater
What type of volcano has gentle slopes?
Shield Volcano