Geology 102 Exam 1 ISU Questions With Complete
Solutions
Describe the Prune Effect from the 1800s Correct Answers -
The molten Earth cools and contracts
-the crust wrinkles and crumbles
-mountains form
how do volcanic eruptions affect global weather? Correct
Answers Ash, gas, and other aerosols can circle the globe and
stay in the atmosphere for months. This absorbs incoming solar
radiation during the day lowering average global temperatures
how does particle size affect transportation? Correct Answers
Water - smallest particles to small boulders.
Wind - smallest particles to sand size.
Ice - smallest particles to boulders as big as a house.
how is erosion done by ice? Correct Answers Plowing - loose
material is "bulldozed".
Plucking - pieces of bedrock are pried loose.
Abrasion - pieces of rock in the ice grind against bedrock below.
how is erosion done by wind? Correct Answers Deflation -
Loose material can be picked up by wind
Abrasion - windblown sediments can "sandblast" rocks.
Transport by Wind - Same processes as water - saltation, bed
load and suspended load.
how is water transported? Correct Answers Saltation -
particles move downstream in short jumps.
, Bed load - material transported by saltation.
Suspended load - material carried in water for long distances.
in the 20th century, what did radioactive decay explain? Correct
Answers the formation of continents, land masses begin to rip
apart
what are anions? Correct Answers (negative charge, gain
electrons) CO3 -
what are Basalt Plateaus (flood basalts)? Correct Answers lava
emerges from elongate fractures or fissures and spreads widely
to create vast, flat lava plains, sometimes covering 10's or 100's
of thousands of square kilometers.
what are cations? Correct Answers (positive charge, lose
electrons) Ca+
what are cinder cone volcanoes? Correct Answers typical very
eruptive volcano.
what are compounds? Correct Answers combination of atoms
of one or more elements in a specific ratio.
What are convergent plate boundaries? Correct Answers when
two plates move together in subduction zones or continental
collisions. these form large mountains
what are divergent plate boundaries? Correct Answers linear
feature that exists between two tectonic plates that are moving
Solutions
Describe the Prune Effect from the 1800s Correct Answers -
The molten Earth cools and contracts
-the crust wrinkles and crumbles
-mountains form
how do volcanic eruptions affect global weather? Correct
Answers Ash, gas, and other aerosols can circle the globe and
stay in the atmosphere for months. This absorbs incoming solar
radiation during the day lowering average global temperatures
how does particle size affect transportation? Correct Answers
Water - smallest particles to small boulders.
Wind - smallest particles to sand size.
Ice - smallest particles to boulders as big as a house.
how is erosion done by ice? Correct Answers Plowing - loose
material is "bulldozed".
Plucking - pieces of bedrock are pried loose.
Abrasion - pieces of rock in the ice grind against bedrock below.
how is erosion done by wind? Correct Answers Deflation -
Loose material can be picked up by wind
Abrasion - windblown sediments can "sandblast" rocks.
Transport by Wind - Same processes as water - saltation, bed
load and suspended load.
how is water transported? Correct Answers Saltation -
particles move downstream in short jumps.
, Bed load - material transported by saltation.
Suspended load - material carried in water for long distances.
in the 20th century, what did radioactive decay explain? Correct
Answers the formation of continents, land masses begin to rip
apart
what are anions? Correct Answers (negative charge, gain
electrons) CO3 -
what are Basalt Plateaus (flood basalts)? Correct Answers lava
emerges from elongate fractures or fissures and spreads widely
to create vast, flat lava plains, sometimes covering 10's or 100's
of thousands of square kilometers.
what are cations? Correct Answers (positive charge, lose
electrons) Ca+
what are cinder cone volcanoes? Correct Answers typical very
eruptive volcano.
what are compounds? Correct Answers combination of atoms
of one or more elements in a specific ratio.
What are convergent plate boundaries? Correct Answers when
two plates move together in subduction zones or continental
collisions. these form large mountains
what are divergent plate boundaries? Correct Answers linear
feature that exists between two tectonic plates that are moving
