Climate Change Flashcards
As global temperatures increase, which of the following scenarios is most likely to happen?
Glaciers and snow coverage decrease.
Which of the following acts as a carbon source within the carbon cycle?
respiration from humans and animals
Over the past several decades, the overall trend for earth’s temperature has been
An increase in overall global temperature at an accelerating rate, a phenomenon known as global warming
The light reactions of photosynthesis occurs within the _____________ of the chloroplast and the Calvin cycle reactions occur within the ________ of the chloroplast
thylakoid; stroma
Which of the following are greenhouse gases?
methane and carbon dioxide
Which of the following is the most likely cause for the sudden sharp increase in atmospheric carbon dioxide
human activities, including the sue of fossil fuels, changes in agricultural practices, and deforestation.
Climate can be best described as
the average weather patterns in a given area over long periods of time
A product of photosynthesis _________ is a carbon based molecule that is the chief source of energy for most organisms
Glucose
How does climate change affect earth’s oceans?
The pH level of the ocean will shift to a more acidic environment, leading to stress and potential extinction of many species of shellfish and coral
How do green house gases cause global warming?
Greenhouse gases prevent radiation of infrared energy back into space, trapping the heat near earth’s surface and causing the climate to warm.
Because fossil fuels are the remains of once living organisms, they contain reservoirs of ________ that are released into the atmosphere
Carbon
Carbon sinks are reservoirs that hold large amounts of carbon. Which of the following are considered to be carbon sinks?
A.) Oceans
B.) Fossil fuels deep underground
C.) The atmosphere
D.) all of the above
D.) All of the above
Which statement below best summarizes the overall purpose of the light dependent reactions?
The light dependent reactions capture the energy from the sun and transfer it to high-energy molecules.
What do all greenhouse gases have in common?
They have complex structures that allow them to contribute to the greenhouse effect by trapping heat energy.
The greenhouse effect
Is caused by gases such as carbon dioxide trapping heat in the earths atmosphere
