Layers of the Earth
The thinnest, outermost layer of the earth?
What is the crust?
He proposed the idea of Continental drift.
Who is Alfred Wegener?
Large layers of lithosphere that are constantly in motion.
What are tectonic plates?
A vent in the earth's crust.
What is a volcano?
A break in the earth's crust.
What is a fault?
The thickest layer of the earth
What is the mantle?
All seven continents were once one supercontinent known as this.
What is Pangaea?
Tectonic Plates are made up of this; the crust and the upper mantle together.
What is the lithosphere?
Most of the world's active volcanoes are located here along the Pacific plate boundary.
What is the Ring of Fire?
Molten rock that erupts onto the earth's surface is called this.
What is lava?
The solid core made of metal.
What is the inner core?
Another name for the Earth which is made up of rocks, minerals, and soil.
What is the geosphere?
The force that makes Tectonic Plates move.
What is convection currents?
This is made up of tiny particles of rock and glass.
What is volcanic ash?
Earth's mantle melts to form this.
What is magma?
The hot, molten metal core responsible the earth's magnetic field.
What is the outer core?
This is when a magnetic field changes direction.
What is magnetic reversal?
The place where two tectonic plates collide.
What is a convergent plate boundary?
Volcanoes that are not associated with plate boundaries are called this.
What is a hotspot?
Most earthquakes occur here.
What is along plate boundaries?
The molten part of the mantle on which tectonic plates float.
What is the asthenosphere?
Wegener's idea of Continental drift was never proven in his lifetime, therefore is referred to as this.
What is a hypothesis?
This forms at a transform plate boundary when a heavy oceanic crust sinks below a lighter continental crust.
What is a subduction zone?
This is a liquid's resistance to flow.
What is viscosity?
A strike-slip fault occurs along this plate boundary.
What is a transform plate boundary?