Earthquakes
True or False: An earthquake is the shaking and trembling of Earth's surface.
True
What are the three types of volcanoes?
Shield, composite, cinder
What is a seismograph?
An instrument that measures, detects, and records the energy of an earthquake at a given location.
What are the three types of seismic waves?
P, S, and L
Where do earthquakes occur?
Along faults
What is the difference between magma and lava?
Magma is located within the volcano, when it is released to the surface, it becomes lava.
What is the difference between the epicenter and focus?
The epicenter is located on the surface, the focus is beneath the surface where an earthquake originates.
Which seismic wave is the most powerful?
L wave
What is the difference between the Richter and Mercalli scale?
The Richter scale measures the magnitude of an earthquake. The Mercalli scale measures the intensity of an earthquake (what people feel and experience)
What are small particles that erupt from a volcano?
Volcanic dust
What is a fault?
A crack in the Earth where movements take place.
Which wave travels the fastest?
P wave (Primary wave)
What do earthquakes release?
Energy
Which two volcanoes have quiet eruptions?
Composite and Shield
What is a caldera?
It forms when the top of a volcano collapses or is blown off.
Which seismic wave originates at the epicenter?
L wave
What is the difference between intensity and magnitude?
Intensity- Strength of an earthquake that can be felt at the surface
Where is the Ring of Fire located?
Along the Pacific ocean
What is a dormant volcano?
A volcano that has erupted, but is not expected to erupt again.
Which type of seismic wave can travel through solids?
S Waves