Volcanoes
What is an opening in Earth's surface through which lava, gas and ash escape?
volcano
A sudden release of energy in Earth's interior, which can cause shaking at the surface.
earthquake
What is the name of the outer most layer of the Earth (the layer we walk on)?
crust
What is molten rock inside the earth?
magma
A tool that measures the seismic waves of an earthquake.
seismogram
What is the name of the inner most (deepest layer) of the Earth?
inner core
What is molten rock after it erupts from a volcano?
lava
Ground shaking and landslides are caused by which natural hazard?
earthquake
This layer of Earth is at a depth of 2,800 - 5,200 km below the surface and is in a liquid state.
outer core
What are the 3 stages of volcano?
active, dormant, and extinct.
The waves that transmit energy as a result of an earthquake.
seismic waves
This layer of Earth is in the solid state and is between 5 and 40 km thick.
crust
Ash falls and volcanic gas emissions are caused by what natural hazard?
volcano
Double Point
This area along the Pacific Ocean is characterized by active volcanoes and frequent earthquakes.
Ring of Fire
Double Point
The upper mantle and the crust are known as this.
What is the lithosphere?