Discuss the stratigraphy of the Grand Canyon. What does this stratigraphy imply about sea level? What are the
formation names of the Grand Canyon rocks? What will be an ideal response?
The student should discuss the transgressive facies model for the Cambrian sedimentary units
of the Grand Canyon. This implies a rise in sea level. Formation names include Tapeats
Sandstone, Bright Angel Shale, and Muav Limestone.
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The North Pole has a higher noon Sun Angle that New York City on this date.
June 21 March 21 September 21 none of these
How have scientists determined that most of the CO2 increases have come from human burning of fossil fuels, rather than natural sources?
A) Carbon isotope analysis indicates the source is fossil carbon. B) There haven't been enough volcanic eruptions since the observed CO2 increases to account for the additional atmospheric carbon. C) Prior to the industrial revolution, CO2 concentrations were negligible, while other greenhouses gases dominated the atmosphere. D) Paleoclimatological reconstructions which show higher CO2 concentrations than pre-industrial times. E) CO2 concentrations are much higher in urban areas than in rural areas, indicating fossil fuels must be the source.
The rapid sinking of a large area of land above an aquifer is known as ________
A) a recharge zone B) a sinkhole C) subsidence D) saltwater intrusion E) a discharge zone
In a single second, the Earth receives as much energy from the Sun as ________
A) it re-radiates in a week B) humans could use in a century C) humans have used since the beginning of civilization D) all power plants generate in a week E) Earth has produced through volcanic eruptions since the beginning of Earth's history