chapter 28.4 Flashcards
what is an increase in the average temp of Earth’s near-surface air and ocean is called?
global warming
what is the warming of the pacific ocean off the coast of western south America that occurs every 3 to 10 years?
El Nino
what occurs when trade winds in the pacific are unusually strong and surface water is colder than normal ?
La Nina
what two changes to earth climate under go?
seasonal and long term
how to seasonal changes happen?
earth revolving around the sun
in general which hemisphere is in summer?
which ever one is tilted toward the sun
what is the period called when the the earth’s surface was covered in ice?
ICE AGE
how long ago did the earth climate reach it’s current pattern
3,000 years ago
what are some factors that can change climate?
tilt on earths axes
earth’s orbit
producing
distances of the sun
how do humans affect climate?
consumption of energy
deforestation and industrial and agricultural practice
what is deforestation?
clearing a large area of forest land
what are two way that the carbon cycle is affected?
deforestation
loss of vegetation
