Earth's Structure
The outermost layer of Earth
What is the crust?
The name of the single landmass that existed millions of years ago
What is Pangaea?
Hot melted rock that flows from a volcano
What is lava?
This measures the strength of an earthquake
What is the Richter scale?
The study of Earth and its processes
What is geology?
Earth's largest and thickest layer
What is the mantle?
These cracks in Earth's crust can cause earthquakes
What are faults?
A volcano that hasn't erupted recently but could erupt again
What is a dormant volcano?
Giant ocean waves caused by underwater earthquakes
What are tsunamis?
The theory explaining how Earth's plates move and interact
What is plate tectonics?
The liquid metal layer of Earth
What is the outer core?
The process of oceanic plates moving apart very slowly
What is seafloor spreading?
This shoots hot water and steam into the air from underground
What is a geyser?
The tool scientists use to measure earthquake intensity
What is a seismograph?
The name for ancient remains of plants and animals in rocks
What are fossils?
The number of main layers that make up Earth's structure
What is four?
The three ways tectonic plates can move
What are moving apart, colliding, and sliding past each other?
The three classifications of volcanoes (active, dormant, extinct)
What are the three types of volcanoes?
The speed at which tsunamis can travel (in mph)
What is 500 miles per hour?
The process of rocks breaking down into smaller pieces
What is weathering?
The hottest layer of Earth, nearly as hot as the sun's surface
What is the inner core?
The underwater mountain range formed when oceanic plates move apart
What is a mid-ocean ridge?
The underground chamber where magma collects before a volcanic eruption
What is a magma chamber?
What creates the jagged lines on a seismograph
What are seismic waves?
The area where one tectonic plate moves beneath another
What is a subduction zone?