GLY1102 Topic 37
20 test answers
Unlock all answers in this set
Unlock answers 20question
Once the flash heating of the atmosphere by the terminal Cretaceous impact cooled, atmospheric temperatures would have risen because of the vast amount of particulate matter in the atmosphere blocking solar radiation from reaching the surface.
answer
False
Unlock the answer
question
The fossil record reveals that extinctions typically involve all forms of life (invertebrates, vertebrates, plants, etc) at similar rates.
answer
False
Unlock the answer
question
The Barringer Meteor Crater is a young (50,000 years old) crater located in this state.
answer
Arizona
Unlock the answer
question
The greatest extinction (in percent of species extinct) in history occurred at the end of this period.
answer
Permian
Unlock the answer
question
A rough estimate of the average duration of species prior to extinction is ______.
answer
About 2 million years
Unlock the answer
question
The fossil record reveals that most species extinctions were caused by changes in the natural environment.
answer
True
Unlock the answer
question
The comet head consists of a solid nucleus surround by a _____ up to 1.5 million miles in diameter.
answer
Nebulous coma
Unlock the answer
question
______ are \"dusty iceballs\" of rock, frozen water, and organic compounds.
answer
Comets
Unlock the answer
question
All dinosaurs became extinct at the Cretaceous/Tertiary boundary.
answer
True
Unlock the answer
question
Unlike the moon, Earth has a very active weathering process that over time remove the evidence of impacts, or at least make old ones very hard to recognize.
answer
True
Unlock the answer
question
The most famous of all extinctions occurred at the end of the ____ and marks the boundary between the Mesozoic and Cenozoic eras.
answer
Cretaceous
Unlock the answer
question
____ is a rare platinum group metal.
answer
Iridium
Unlock the answer
question
The Deccan traps of India and Pakistan, southern Brazil, and the western US all show evidence of extensive volcanism at the time of the C/T boundary.
answer
True
Unlock the answer
question
Microtekites are small, droplet-shaped silica glass cooled form molten material expelled form an impact crater.
answer
True
Unlock the answer
question
The vast majority of asteroids in our solar system are found in the Asteroid Belt between Jupiter and Pluto.
answer
False
Unlock the answer
question
In 1981, the geophysicist G. Penfield, found a bow-shaped depression near the Yucatan Peninsula town of Chicxulub tat he thought might be the C/T boundary impact crater.
answer
True
Unlock the answer
