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- 1. Multiple Choice
Lava flows
a break in Earth's lithosphere where energy is released
fast moving avalanches of hot gas, ash, and rock
long streams of molten rock from volcanoes
the energy released when rocks break because of stress
- 2. Multiple Choice
moment magnitude scale
a digital instrument used to measure earthquake waves
rates the amount of shaking from an earthquake
a rating system that uses newer technologies to measure the total energy released by an earthquake
a rating system that uses observations about damage to determine the strength of an earthquake
- 3. Multiple Choice
Richter Magnitude Scale
a digital instrument used to measure earthquake waves
rates the amount of shaking from an earthquake
a rating system that estimates the total energy released by an earthquake
numerical rating system used to measure the amount of energy released during an earthquake
- 4. Multiple Choice
modified Mercalli scale
uses observations to rate the amount of shaking from an earthquake
a digital instrument used to measure earthquake waves
a rating system that estimates the total energy released by an earthquake
numerical rating system used to measure the amount of energy released during an earthquake
- 5. Multiple Choice
liquefaction
the measurement of ground motion or energy on the Richter magnitude scale
occurs when wet soil acts more like a liquid during an earthquake
the energy released when rocks break due to stress
wet, sandy filled soil
- 6. Multiple Choice
pyroclastic flow
a break in Earth's lithosphere where energy is released
fast moving avalanches of hot gas, ash, and rock
long streams of molten rock from volcanoes
water vapor, carbon dioxide and sulfur dioxide dissolved in magma
- 7. Multiple Choice
seismograph
a digital instrument used to measure earthquake waves
a digital instrument used to measure pyroclastic flows
the measurement of ground motion or energy
the amount of energy released when rocks break due to stress
- 8. Multiple Choice
Which is a good estimate for how much more motion there is for a magnitude 6 earthquake than a magnitude 2
400
10,000
1,000
100,000
- 9. Multiple Choice
Which is a good estimate for how much more motion there is for a magnitude 7 earthquake than a magnitude 5
100
10,000
1,000
200
- 10. Multiple Choice
What does the height of the lines on a seismograph indicate?
an earthquake's magnitude on the Richter scale
the amount of shaking from an earthquake
an estimate of the total energy released by an earthquake
a break in Earth's lithosphere
- 11. Multiple Choice
Where can volcanoes form?
on land
on the ocean floor
on islands
all of these
- 12. Multiple Choice
Where do MOST earthquakes occur?
in the middle of plates
at the edges of plate boundaries
near mountains
near coastlines
- 13. Multiple Choice
Earthquakes occur at
faults
landslides
pyroclastic flows
tsunamis
- 14. Multiple Choice
rocks breaking due to stress cause
earthquakes
tsunamis
pyroclastic flows
faults
- 15. Multiple Choice
What kind of technology would be best for scientists monitoring tsunami threats?
buoys that measure ocean temperatures at different depths and distances
satellites in space looking for changes in ocean temperature
maps of past tsunamis and earthquakes
buoys that measure changes in water levels at different depths and distances
- 16. Multiple Choice
hot spots
locations where volcanoes form far from a plate boundary
a volcano next to a divergent boundary
a volcano next to a convergent boundary
an area where tsunamis are common
- 17. Multiple Choice
pyroclastic flows (check all that apply)
fast - impossible to outrun
very slowly, easy to avoid
relatively cool
incredibly hot
- 18. Multiple Choice
What type of evidence would scientists use to help predict that a volcano is likely to erupt? (choose all that apply)
increase in seismic activity
ground swelling
presence of CO, methane and other gasses
history of past eruptions
- 19. Multiple Choice
Breaks in Earth's lithosphere
faults
fractures
earthquakes
tsunamis
- 20. Drag and Drop
Most tornadoes in the United States occur in an area known as (a)
Tornado AlleyTornado ThreatTyphoonTornado Target - 21. Multiple Choice
Why do tornadoes typically cause less damage than hurricanes? (choose all that apply)
tornadoes don't usually last as long as hurricanes
tornadoes are usually smaller than hurricanes
tornadoes usually last longer than hurricanes
tornadoes are usually bigger than hurricanes
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