- 1. A sudden movement of the earth's crust caused by the release of stress accumulated along geologic faults or by volcanic activity
A) rain
B) earthquake
C) plate
D) crust
- 2. The point on earth’s surface that is vertically above the focus of an earthquake
A) scale
B) focus
C) center
D) epicenter
- 3. The point of origin of an earthquake
A) focus
B) center
C) core
D) mantle
- 4. the thick shell of dense, rocky matter that surrounds the earth’s core
A) core
B) mantle
C) epicenter
D) scale
- 5. any of various instruments for measuring and recording the vibrations of earthquakes
A) radious
B) seismograph
C) thermometer
D) richter scale
- 6. a logarithmic scale, ranging from 1 to 10, for indicating the intensity of an earthquake
A) rain scale
B) Richter Scale
C) heat
D) weather
- 7. a transference of energy
A) crust
B) core
C) wave
D) mantle
- 8. the distance from the center of a circle to any point on its circumference
A) focus
B) seismograph
C) radious
D) richter scale
- 9. Where is Earths heat energy most concentrated?
A) crust
B) mantle
C) soil
D) the core
- 10. Convection currents are powered by?
A) water
B) heat
C) Freeze
D) soil
- 11. What evidence supports the theory of continental drift?
A) animals
B) fossil discoveries
C) land
D) temperature
- 12. Tectonic plates are always ______________.
A) growing
B) falling
C) sleeping
D) moving
- 13. Where is the mantle located?
A) under the crust
B) over the core
C) between the crust and the core
D) in the ocean
- 14. Force that drives plate tectonics
A) convection currents
B) heat
C) water
D) Pressure
- 15. When two plates that differ in ______________ collide, volcanoes often form nearby.
A) weight
B) size
C) density
D) temperature
- 16. What does scorching mean?
A) Warm
B) very hot
C) Frozen
D) cold
- 17. The sliding boundary between the Pacific Plate and the North American Plate. It slices California in two from Cape Mendocino to the Mexican border. San Diego, Los Angeles and Big Sur are on the Pacific Plate. San Francisco, Sacramento and the Sierra Nevada are on the North American Plate.
A) Rocky Mountains
B) Mariana Trench
C) Mt Saint Helens
D) St Andreas fault
- 18. Its eruption on May 18, 1980, was one of the greatest volcanic explosions ever recorded in North America.
A) Mariana Trench
B) San Andreas Fault
C) Mt Saint Helens
D) Rocky Mountains
- 19. mountain range forming the cordilleran backbone of the great upland system that dominates the western North American continent.
A) San Andreas Fault
B) Rocky Mountains
C) Mariana Trench
D) Mt Saint Helens
- 20. is a crescent-shaped scar in the Earth’s crust that measures more than 1,500 miles
A) Rocky Mountains
B) San Andreas Fault
C) My Saint Helens
D) Mariana Trench
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