chapter 28.4 Flashcards
global warming
an increase in temperature of earths near-surface air and oceans
el nino
the warming of the pacific ocean off the coast of western south america that occurs every 3 to 10 years
la nina
occurs when trade winds in the pacific are unusually strong and surface water is colder than normal
what are two climate changes that earth undergoes
seasonal and long-term changes
how do seasonal changes happen
revolving around the sun
which hemisphere is in the summer
the hemisphere that is tilted towards the sun
what is the period of time where earths surface was covered in ice
ice age
how long ago did the world reach its current pattern
3,000 years ago
what are some factors that cause climate change
the tilt of the earth´s axis and rotation, the shape of its orbit, and the timing of the seasons
how do humans create climate change
energy consumption, deforestation, industrial practices, and agricultural practices
what is deforestation
the clearing of large areas of forest land
how does deforestation cause climate to increase
we rely on trees and they remove the carbon dioxide
what are the two ways that the carbon cycle is affected
deforestation and loss of vegetation
