Earthquakes
The beginning point of an earthquake is called a _________
Focus
Magma that breaks through the surface is called _______
Lava
What is the Ring of Fire
The are in the Pacific Ocean along plate boundaries where there are a lot of earthquakes and volcanoes.
Vibrations/waves that travel through the earth’s crust
What are hot springs?
Body of water over a hot spot
Richter Scale
True or False: A dormant volcano is one that has not erupted in recorded history and is not expected to erupt again.
False. A dormant volcano is one that HAS erupted in recorded history but is not expected to erupt anytime soon.
What is plate tectonics?
The theory that the earth is made of different plates/pieces that move along the earth’s surface.
What waves occur beneath the surface?
Body waves
Which type of eruption is the slowest, least intense?
Hawaiin eruption
What machine detects, times, and measures movements of the earth?
A seismograph
Name two volcano shapes.
Shield, Cinder Cone, Composite Cone
What is the lithosphere?
The lithosphere is the upper part of the earth’s mantle and crust.
What is the difference between S waves and P waves?
S waves have an up-and-down zig zag motion, travel slower, and cannot travel through liquid
Heated magma rising to earth’s surface, hot spot
Name the 3 types of faults
Normal fault, strike-slip fault, and reverse fault
Name 2 types of eruptions.
Hawaiin, Strombolian, Vulcanian, Pelean, Plinian
What is a pyroclastic flow?
Avalanche of red-hot dust and gases emitted by a volcano.
Are Love and Rayleigh waves body waves or surface waves?
Surface waves
What are some products/effects of volcanoes?
gems, igneous rock, enriches the soil
1. Moving or removing a lot of earth
2. Volcanic eruption
3. The moving of tectonic plates
How can the same volcano have more than one kind of eruption?
After a volcano erupts, it may change the shape, thus making the next eruption a different kind.
What is volcanic fog/gas called?
Vog
What is the difference between the focus and epicenter of an earthquake?
Focus is the starting point under the surface, and the epicenter is the point above the earth’s surface.
Most violent/intense type of eruption, gas and pyroclastic flow. Mt. Vesuvius