Earthquakes 1
Earthquakes 2
Volcanoes 1
Volcanoes 2
Volcanoes 3
100
Another word for earthquakes strength is its __________
What is magnitude
100
A break in Earth's crust along which blocks of crust slide relative to one another is ________
What is a fault
100
A shield volcano a) is sometimes called a stratovolcano b) has a jagged surface c) has gently sloping sides d) forms when lava erupts underwater
What is has gently sloping sides
100
Pillow lava a) forms a brittle crust that would be painful to walk on b) has a glassy surface with rounded wrinkles c) usually oozes from a volcano d) forms when lava erupts underwater
What is forms when lava erupts underwater
100
A large depression that forms when the magma chamber partially empties is a _______
What is caldera
200
What scale is used to measure the strength of an earthquake?
What is Richter magnitude
200
Strike- slip faults are created by _________
What is transform motion
200
A cinder cone volcano a) has gently sloping sides b) is formed by explosive and non explosive eruptions c) erodes over thousands of years d) has steep slopes
What is has sleep slopes
200
Lava with a high viscosity a) is runny, almost like water b) is thick, like pudding c) smells like sulphur d) dries smooth and glassy
What is thick like pudding
200
Molten rock deep underground often gathers in a _________
What is magma chamber
300
Primary seismic waves a) are slower than secondary waves b) are the result of shearing forces in rock c) can travel through solids, liquids, and gases d) cause Earth's surface to roll up and down
What is can travel through solids, liquids, and gasses
300
Which seismic waves do the greatest damage?
What is surface waves
300
A dormant volcano a) is currently explosive b) might erupt again c) usually erupts once a year d) has never erupted
What is might erupt again
300
When you talk about the viscosity of lave you are talking about __________
What is how the lava flows
300
What is a rift?
What is a crack in the Earth's crust
400
The waves of energy from earthquakes that travel through Earth are called?
What is seismic waves
400
The epicenter of an earthquake is the point on Earth's surface a) directly below the focus b) directly above the earthquakes focus c) above the seismic gap d) where the damage is lightest
What is directly above the earthquakes focus
400
An extinct volcano a) will probably erupt on the near future b) will probably erupt in the distant future c) will probably never erupt again d) has probably never erupted
What is will probably never erupt again
400
What is pyroclastic material_____
What is magma that blasts into the air and hardens
400
When an oceanic plate collides with a continental plate, the oceanic plate is usually subducted because
What is oceanic crust is denser and thinner than continental crust
500
The strength of an earthquake is determined by a) the type of fault on which it occurs b) gap hypothesis c) amount of damage it causes d) amount of ground motion
What is amount of ground motion
500
One way to forecast earthquakes in a place is to observe their past a) strength and intensity b) strength and frequency c) frequency and intensity d) magnitude
What is strength and frequency
500
An active volcano a) has never erupted b) will blow smoke but never erupt c) is currently erupting or will erupt very soon d) will erupt in 100 years
What is currently erupting or will erupt very soon
500
Which of the following would you expect after an explosive eruption a) warmer temperatures b) darkened skies c) calm lava flows d) clear skies
What is darkened skies
500
Mount Rainier and Mount St. Helens are a) shield volcanoes b) cinder cone volcanoes c) composite volcanoes d) calderas
What is composite volcanoes
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