Volcano Types
These volcanoes (2) have runny lava
Kilauea
Hekla
About how far do the tectonic plates move each year?
About one inch
What type of crust makes runny lava?
Oceanic crust
True/False: All of the Hawaiian islands are currently active
False
What are the three layers of the Earth?
Core, Mantle, Crust
These volcanoes (2) have slow moving lava
Mt. St. Helens
Yellowstone
What is the boundary where plates are coming together?
Convergent boundary
What type of crust makes slow moving lava?
Continental crust
True/False: All volcanoes have the same type of lava
What is Ms. McPhail's favorite flavor of ice cream?
Chocolate
If you got this wrong, go to the office ;)
What two types of volcanoes are formed by hot spots/mantle plumes?
Caldera
Shield volcano
What boundary is where one plate is spreading apart?
Divergent boundary
What type of crust(s) make basalt?
Oceanic only
True/False: The process of plate tectonics happens very quickly
False-The plates only move about one inch a year. This change is only noticeable over thousands of years
Where does the heat that causes mantle plumes come from?
The core
What volcano types (2) are found in areas of stability?
Yellowstone
Kilauea
What is one piece of evidence for the theory of plate tectonics?
Different ages of seafloor
Continents look like they fit together
Same fossils/rocks in different areas of the world
What type of crust(s) make andesite?
Oceanic and continental
True/False: Crystallization is when lava cools down to form rock
True
What type of plate boundary does subduction occur at?
Convergent boundary
What volcano types (2) are found in areas of change? (on plate boundaries)
Fissure vent
Stratovolcano
Who is the man that originally proposed the theory of plate tectonics?
Alfred Wegner
What type of crust(s) make rhyolite?
Continental only
True/False: Yellowstone and Kilauea were formed by the same process
True
How old is Kauai?
About 5.1-5.5 million years old