GEOL 105 EXAM 1 QUESTIONS
WITH 100% CORRECT DETAILED
ANSWERS
What hazard causes greatest lose of life? - Answer- Tornadoes and Windstorms
Average Costs? - Answer- USA = 10 Billion
Geologic Cycle - Answer- Continuos Operation of processes that produce the earth
materials, land, water, and atmosphere needed fro survival
Techtonic cycle - Answer- Driven by forces within the earths core, involves creation,
movement, and destruction of techtonic plates
Rock Cycle - Answer- Rock recycling process, magma crystalizes and becomes
igneous rock. Water, wind etc erodes this to become sediment. When the sediment is
dropped it is buried under other sediment and the pressure etc forces the sediment to
undergo lithification(conersion to solid rock) to sedimentary rock. As the sedimentary
rock gets deeper the heat and pressure may alter in form to metamorphic rock. The
heat eventually causes the metamorphic to melt and start the cycle over again
Biochemical Cycle - Answer- cycling of chemicals/elements through the atmosphere,
lithosphere, hydrosphere, and biosphere
Uniformitariantism - Answer- Processes active today were also operating in the past
Prediction - Answer- Involves giving a date, time, and size of the event
Forcast - Answer- Ranges in certainty, There is a 40% chance of rain. Usually given as
a percentage
Precursor Events - Answer- events that occur before a hazard that could help to give
warning
Impact of Hazard - Answer- reliant on how much energy is released (magnitude)
Magnitude - Answer- How much energy is released
Frequency - Answer- interval between occurrences
Reactive - Answer- Actions following a disaster
, Anticipatory Response - Answer- Planning ahead of time to reduce the effect of hazard
Composition of the Earth - Answer- 1)Solid inner core 1200 km thick made of
metal/Iron(90%)
2)Liquid Outer core 2200 km thick made mostly of metal
3)Mantle, 2900 km thick, composed mostly of solid iron and rock
4)Crust, outer layer of earth, made of rock
Inner Core - Answer- 1200 km thick, made up of mostly Iron
Outer Core - Answer- 2200 km thick, made up mostly by liquid metal (iron)
Mantle - Answer- 2 sections, upper and lower
Combination of crust and outer mantle = Lithosphere 100 km
100 km to 400 km = Athenosphere
400 km to 700 km = Upper Mantle
700 km to Outer Core = Lower Mantle
Lithosphere - Answer- Combination of crust and outer mantle (100 km)
Athenosphere - Answer- 100 to 400 km
Upper Mantle - Answer- 400 to 700 km
Lower Mantle - Answer- 700 km to Outer Core
Tectonic Plates - Answer- large pieces of the lithosphere that move due to weak flow of
athenosphere
Sea Floor Spreading - Answer- Starting at mid-oceanic ridges, the seafloor has new
crust created, pushing older crust out away from the ridge. This Crust eventually hits a
continental plate, where it is pushed back into the earth and melted to form new crust
etc. Called subduction zones
Subduction - Answer- When one plate is forced under the other into the athenosphere
to melt down.
Types of Plate Boundaries - Answer- Convergent, Divergent, and Transform
Convergent - Answer- Where two plates move towards each other
If ocean - Ocean older plate sinks, volcanoes are common, and trenches form, causes
earthquakes, volcanoes, Tsunamis
If Ocean Continental, ocean plate sinks, volcanoes and trenches form, causes great
earthquakes, volcanoes, Tsunamis flooding etc
WITH 100% CORRECT DETAILED
ANSWERS
What hazard causes greatest lose of life? - Answer- Tornadoes and Windstorms
Average Costs? - Answer- USA = 10 Billion
Geologic Cycle - Answer- Continuos Operation of processes that produce the earth
materials, land, water, and atmosphere needed fro survival
Techtonic cycle - Answer- Driven by forces within the earths core, involves creation,
movement, and destruction of techtonic plates
Rock Cycle - Answer- Rock recycling process, magma crystalizes and becomes
igneous rock. Water, wind etc erodes this to become sediment. When the sediment is
dropped it is buried under other sediment and the pressure etc forces the sediment to
undergo lithification(conersion to solid rock) to sedimentary rock. As the sedimentary
rock gets deeper the heat and pressure may alter in form to metamorphic rock. The
heat eventually causes the metamorphic to melt and start the cycle over again
Biochemical Cycle - Answer- cycling of chemicals/elements through the atmosphere,
lithosphere, hydrosphere, and biosphere
Uniformitariantism - Answer- Processes active today were also operating in the past
Prediction - Answer- Involves giving a date, time, and size of the event
Forcast - Answer- Ranges in certainty, There is a 40% chance of rain. Usually given as
a percentage
Precursor Events - Answer- events that occur before a hazard that could help to give
warning
Impact of Hazard - Answer- reliant on how much energy is released (magnitude)
Magnitude - Answer- How much energy is released
Frequency - Answer- interval between occurrences
Reactive - Answer- Actions following a disaster
, Anticipatory Response - Answer- Planning ahead of time to reduce the effect of hazard
Composition of the Earth - Answer- 1)Solid inner core 1200 km thick made of
metal/Iron(90%)
2)Liquid Outer core 2200 km thick made mostly of metal
3)Mantle, 2900 km thick, composed mostly of solid iron and rock
4)Crust, outer layer of earth, made of rock
Inner Core - Answer- 1200 km thick, made up of mostly Iron
Outer Core - Answer- 2200 km thick, made up mostly by liquid metal (iron)
Mantle - Answer- 2 sections, upper and lower
Combination of crust and outer mantle = Lithosphere 100 km
100 km to 400 km = Athenosphere
400 km to 700 km = Upper Mantle
700 km to Outer Core = Lower Mantle
Lithosphere - Answer- Combination of crust and outer mantle (100 km)
Athenosphere - Answer- 100 to 400 km
Upper Mantle - Answer- 400 to 700 km
Lower Mantle - Answer- 700 km to Outer Core
Tectonic Plates - Answer- large pieces of the lithosphere that move due to weak flow of
athenosphere
Sea Floor Spreading - Answer- Starting at mid-oceanic ridges, the seafloor has new
crust created, pushing older crust out away from the ridge. This Crust eventually hits a
continental plate, where it is pushed back into the earth and melted to form new crust
etc. Called subduction zones
Subduction - Answer- When one plate is forced under the other into the athenosphere
to melt down.
Types of Plate Boundaries - Answer- Convergent, Divergent, and Transform
Convergent - Answer- Where two plates move towards each other
If ocean - Ocean older plate sinks, volcanoes are common, and trenches form, causes
earthquakes, volcanoes, Tsunamis
If Ocean Continental, ocean plate sinks, volcanoes and trenches form, causes great
earthquakes, volcanoes, Tsunamis flooding etc
