Show:
Games
Jeopardy
Science
Lava
Magma
100
What is the magma chamber?
Space underground that holds magma
100
Which type of lava is smooth skinned?
Pahoehoe
100
Which type of lava is rough and jagged?
Aa lava
100
What was the name of the super continent?
Pangea
100
What is an example of a continental volcanic arc?
The Andes
200
Which volcano is the smallest?
Cinder cones
200
What type of materials are produced from volcanic eruptions?
Pyroclastic materials
200
What is a break in Earth's crust called?
A rift
200
Which is made of tectonic plates? Lithosphere or the Asthenosphere?
Lithosphere
200
If sediment is farther away from the rift is it older or newer?
Older
300
What does the phrase "Intra" in the word Intraphase mean?
Within
300
If more gases are trapped in magma what will happen?
Make the eruption more explosive
300
Who came up with the hypothesis that the continents were moving?
Alfred Wegener
300
Where are ridges located?
Oceanic-Oceanic crust or boundary
300
How do plates move?
Convection currents in the mantle
400
True or False? The easier the substance flows the higher the viscosity.
False. The lower the viscosity.
400
What does oceanic-oceanic produce?
Volcanic island arc
400
What are the 4 pieces of evidence that Wegener came up with?
Continental shapes, matching fossils, rock types and structures, and ancient climates
400
Does thicker crust create rift valleys or ridges?
Rift valleys
400
How are volcanoes formed?
When crust moves over a mantle plume the magma rises up through the crust and produces hot spot. As the crust moves, lines of volcanoes form.
500
How are Calderas formed?
From the collapse of a composite or shield volcano when a lava chamber empties
500
What is a dangerous mudflow called?
A Lahar
500
Which volcano is the most explosive and what is another name for it?
Composite cones and Stratovolcanoes
500
What is it called when lava flowing from fissures in ground can create large layered areas?
Lava plateaus
500
How are volcanoes classified?
Magma composition