Ch.21 (Final) Word Scramble
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Question | Answer |
Which is true about temperature trends averaged over the last 30 years | temperatures on land are increasing; sea surface temperatures are increasing; troposphere temperatures are increasing; and stratosphere temperatures are decreasing. |
Which of the following layers of the atmosphere contains the ozone layer? | stratosphere |
Two ways in which concentrations of CO2 million of years ago can be reconstructed is from the density of stomata in fossilized leaves and _____ | isotopic content of carbon in fossils |
_____ can alter the surface albedo of the Earth and affect ocean circulation on a million-year time scale. | Plate tectonics |
The _____ is an international panel of scientists that assesses the evidence for and effects of climate change. | IPCC |
Cloud droplets and _____, which are small particles suspended in the atmosphere, together relfect around 23% of the incident solar radiation back to space. | atmospheric aerosols |
Which is not true? | A. In the 1970s there was a scientific consensus about an imminent ice age. |
Which is true about the Earth’s atmosphere? | Nitrogen is currently the largest constituent |
Heat energy from solar radiation absorbed at the Earth's surface is known as _____. | terrestrial radiation |
Which is most true the Greenhouse Effect. | Greenhouse gasses absorb long wavelength (infrared) radiation from the Earth and radiate some of it back towards the Earth. |
What is the role of the ozone layer? | It protects the surface from ultraviolet radiation from the Sun. |
Which of the following is not a paleoclimate proxy? | insect trapped in amber |
The Earth's average climate is determined by its _____, the balance between the amount of energy entering and exiting the Earth system. | radiative balance |
Which is true? | both a) and b |
Do the oceans absorb CO2, and if so, what happens? | Yes; they become more acidic |
By what means do we know that greenhouse gas concentrations have varied quite dramatically over the geologic record? | ice cores |
Between 1961 and 2003 mean sea level rose _____. | 1.8 mm |
Climate change will affect human populations in all but the following ways: | all are correct |
Without this, the Earth would warm up rapidly due to the absorption of solar radiation. | emission of infrared radiation |
At this point in time global mean temperatures begin to increase substantially and quite rapidly | industrial revolution |
Which of these rock formations or conditions would imply a colder climate? | Tillite |
Which of the following atmospheric gases are derived from both natural processes and anthropogenic processes? | carbon dioxide |
_____ is the most abundant and important greenhouse gas. | CO2 |
The Sun transmits its energy to Earth in the form of _____. | electromagnetic radiation |
The orbital theory of climate is also known as _____. | Milankovitch Theory |
NO2 and CH4 are important greenhouse gases due to their strong _____ of solar radiation | absorption |
How will agriculture be impacted by climate change? | alter the need for irrigation |
The Earth is warm due to _____. | greenhouse gases |
Paleoclimate studies require that scientists find paleoclimate _____, materials that have retained a unique signature of the ancient climate conditions. | proxies |
The percentage of radiation reflected from a surface is referred to as its _____. | albedo |
Models of climate are only able to reproduce the warming over the last century only if _____ are added. | greenhouse gases |
Why is water vapor an extremely important greenhouse gas? | It strongly absorbs IR radiation |
_____ has been responsible for around 50% of the sea level rise over the last century. | Melting and loss of ice |
_____ is the increase in the volume that results from increased ocean temperatures. | Thermal expansion |
Which is true of greenhouse gasses? | they absorb infrared radiation, and re-emit some of it back toward Earth |
The _____ is the Earth's primary source of energy. | Sun |
Greenhouse gases can survive in the atmosphere for different amounts of time, which is known as _____. | atmospheric lifetime |
What is causing the increase in CO2 in the last 200 years? | burning fossil fuels |
As more CO2 dissolves in the ocean the _____ increases | concentration of H+ |
_____ are important concepts in climate science. They are factors that amplify or decrease the rate of a process | Feedbacks |
Where is most of Earth’s carbon stored? | as limestone |
The most straightforward way to decrease emissions of CO2 is to _____. | move away from using fossil fuels |
Created by:
Thomas.Siu
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