GEO EXAM 5 GLOBAL CLIMATE CHANGE

What are gases that trap heat in the atmosphere?

Greenhouse gases

What are the most important greenhouse gases?

(CO2) Carbon, (CH4) Methane, nitrous oxide, and fluoridated gases

Who was the person who first reported in 1981 that the planet is experiencing a modern global warming trend?

James Hansen

Increasing global atmospheric and oceanic temperatures from some point in the past to the present is indicated by the phrase ____

global warming

What method(s) are used to yield either direct or proxy evidence for global temperatures?

• data collected from Mauna Loa shows an increase in CO2 by 20% in the last 40 years

• Ice core data shows links between CO2 and temperature, with a recent increase in both

• Data from ice cores and other proxies show increases in CO2, CH4, and N20 since the Industrial Revolution

How does Carbon Dioxide enter the atmosphere through human activites?

• burning fossil fuels (natural gas and oil)

• burning solid waste, trees and wood products

• manufacture of cement

• burning coal

Global warming causes both an increase in temperature and ____ of the ocean water

Acidity

What two major gases compose the atmosphere?

Nitrogen and oxygen

From the solar radiation that reachers earth, __% is absorbed on Earth’s surface and __% is reflected back to space

50%, 30%

What planet has a CO2 atmosphere, which traps heat? As a result, its surface rises to 941 degrees

Venus