Assignment 5
The marine biosphere operates like a
biologic pump
Which of these human activities has directly contributed to global warming?
burning of coal
The part of the carbon cycle that focuses on the formation and destruction of fossil fuels and other sediments containing organic carbon is:
the long term organic carbon cycle
On Earth, ________ is/are the largest reservoir of carbon dioxide and heat.
the oceans
Heat is a measure of
the total amount of energy associated with the movement of molecules in a substance.
Which of the following is the proper equation for photosynthesis?
6H2O + 6CO2 + sunlight → C6H12O6 + 6O2
The reaction showing atmospheric carbon dioxide dissolving into raindrops is,
CO2 + H2O --> H2CO3
Which of the following is a true statement about carbon and the carbon cycle?
Carbon is recycled among plants, animals, water, soil, and the atmosphere.
The largest reservoir in the carbon cycle is
Limestone
Which of the following statements about the greenhouse effect is true?
Most life on Earth relies upon the hospitable temperatures resulting from the greenhouse effect.
The biological pump determines carbon concentrations in
Oceans
How does the greenhouse effect work?
Some sunlight energy that hits Earth radiates toward space, but some is trapped by atmospheric gases.
Why is water so important in controlling Earth's climate?
The water in oceans and lakes stores the energy radiated by the sun and releases it slowly.
According to scientists, how do the levels of carbon dioxide in the atmosphere today compare to the past 400,000 years?
There's more atmospheric carbon dioxide today.
The planet Mercury is closer to the sun than the planet Venus. However, temperatures on Venus are hotter than temperatures on Mercury. Why would this be the case?
Venus has a thicker atmosphere than Mercury that traps heat from the sun
How would Earth change if the greenhouse effect didn't exist at all?
Without the greenhouse effect, Earth would radiate all its heat into space
According to the graph, by how many parts per million has the concentration of atmospheric carbon dioxide changed between 1980 and 2010?
about 50 ppm
Almost all scientists believe that the global warming observed over the past 100 years has been caused by elevated levels of gases in the atmosphere. Which of the following gases is primarily responsible for this problem?
carbon dioxide
What are fossil fuels?
carbon-rich remains of plants and microorganisms
The process of photosynthesis transforms solar energy into ________ energy.
chemical
Which of these is a fossil fuel?
coal
In the atmosphere- ocean carbon exchange, the ocean is described in two parts, the mixed layer and the
deep ocean layer
While 100GtC per year are cycled between the various parts of the atmosphere- land biosphere- ocean system, the ___________ contains the largest of the reservoirs
deep ocean layer
What process occurs as individual water molecules move fast enough to rise into the air as water vapor?
evaporation
The greenhouse effect is most similar to
heating up the air inside a car by parking it in the sun.
Temperature is a measure of
how fast the molecules in a substance are moving
The process by which carbon dioxide and water are converted to glucose and oxygen is called
photosynthesis.
Photosynthesis occurs within the
uppermost 100 meters of the ocean
Which of these emits carbon dioxide into the atmosphere?
volcanoes
Which of the following is considered a greenhouse gas?
water vapor