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Earth and Space Unit 2 Chapter 6: Global Climate Change

Study these flashcards until you can go through the entire deck without making a mistake. Look at each flashcard, think the answer to yourself in your head, then click the flashcard to turn it over and see what the answer is. If you knew it, click the arrow button. You will move on to the next flashcard and won't see the one you knew again. If you didn't know it, click the flashcard again so you can see the question. Read the question and say the answer to yourself. Spend about 10 seconds trying to memorize it, then click the "try again later" button. It will shuffle the card back into the deck so it will come up again later. Keep studying the flashcards until you work your way through the entire deck. Then take a break, come back later, and study the deck again. Each time you do this, you should be able to make it through the deck quicker because you will know more and more of the flashcards. Do this until you can open up the deck and work your way through it without making a mistake. In order to get credit for this assignment, you need to accumulate at least 1 minute per flashcard in the deck AND pass the flashcard quiz. For instance, if there are 30 flashcards in the deck, you will need to study a MINIMUM of 30 minutes. It doesn't have to be all at once. Quia.com will keep track of your study time and report it to your teacher. You can check how much time quia is giving you credit for by going to your homepage. It stops the timer if you are not actively studying, so if you just open them up and watch a TV show for half an hour, quia will not give you credit for studying for 30 minutes. You will need to know the flashcards well enough to pass the flashcard quiz anyways, so just keep studying until you know them all. Good luck!
AB
_________ refers to the increase in average temperature of the Earth's biosphere.Global warming
Name at least 2 different types of evidence that global warming is happening.Temperature records, shrinking ice caps and glaciers, rising sea levels
The extra energy in the atmosphere due to the warming of Earth's climate may be leading to stronger ______.storms
Besides temperature, what else has been rising due to global warming?sea levels (due to melting ice caps and glaciers)
The extremely high rate of ______ of many species around the world may in part be due to global climate change.extinction
Which gas gets the majority of the blame for global warming?carbon dioxide (Even though water vapor is in higher concentrations on average than CO2, and produces most of the greenhouse effect humans have not been directly adding any additional water vapor to the air. Methane is a stronger greenhouse gas than carbon dioxide, but is in a much lower concentration in the air than CO2)
Which gas is the second leading culprit for causing global warming, and is an even stronger greenhouse gas than the one that gets most of the blame for global warming?Methane (Methane is even more efficient at trapping heat than CO2, but there's much less of it, so it doesn't get as much of the blame)
There is a lot of ____ trapped in arctic permafrost. As global temperatures rise, more and more permafrost melts, releasing this greenhouse gas into the atmosphere. The system just described is an example of a _____ feedback system.methane, positive (It's an example of a positive feedback because it accelerates global warming. The warming causes permafrost to melt, releasing more methane, which traps more heat, which causes more permafrost melting, which releases more methane, which traps more heat, etc....)
Global climate change may be causing some areas of the world to be getting too dry to grow crops. This is a phenomenon known as _____.desertification (which literally means, "the process of becoming desert-like")
Which animal receives a lot of blame for increases in atmospheric methane levels?Cows (They release a lot of methane when they release gas from their posterior area, just below their tails. This release of gas is politely known as flatulence.)
The main cause of the increasing levels of carbon dioxide in the atmosphere is the ______.burning of fossil fuels
A growing tree can help lower the amount of _______ in the atmosphere because it is a gas that is required (along with water), for photosynthesis to occur. Photosynthesis converts the carbon atoms in this gas into the organic molecules that make up the growing tree.carbon dioxide
Which human activity is the second leading cause of the increase in carbon dioxide levels in the atmosphere?Deforestation (Cutting down forests prevents trees from doing photosynthesis, leading to less CO2 being taken out of the atmosphere. Often times, the forests are burned to clear them quickly so the land can be farmed. Burning the trees releases the carbon stored in the trees directly back into the atmosphere as CO2)
If global warming caused the average amount of cloud cover on this planet to increase, that would be an example of a _____ feedback because clouds are good at reflecting energy from the sun back out into space, and would help slow down global warming.negative (A negative feedback happens when anything that is caused by the increase in something works to slow down the increase in that original cause)
____ feedbacks cause a trend to slow down or reverse themselves.Negative
____ feedbacks cause a trend to speed up.Positive (An example of a positive feedback with global warming is melting of snow and ice. Global warming causes there to be less snow and ice covering the planet. With less snow and ice to reflect the suns energy back out into space, the earth warms up more and causes even more snow and ice to melt. Both trends are sped up)
____ feedbacks work to achieve homeostasis in a system.Negative (because they help to bring a system back to a normal level. For example, sweating is an example of a negative feedback because it is caused by being overheated, but then it helps the body cool down and get back to its normal temperature)


Mr. McGee
Truman High School

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