Chapter 28.4 Flashcards
An increase in the average temperatures of Earth’s near-surface air & oceans.
Global warming
The warming of the Pacific Ocean off the coast of western South America that occurs every 3 to 10 years.
El Nińo
Occurs when trade winds in the Pacific are unusually strong and surface water is colder than normal.
La Nińa
What are the 2 changes that Earth’s climates undergoes?
seasonal & long-term
How do seasonal changes occur?
as the Earth revolves around the sun
Which hemisphere experiences summer?
the one tilted towards the sun
What is the period of time called when most of earth was covered in ice?
18,000-22,000 years ago
How long ago did the weather reach its current pattern?
3,000 years ago
What factors could cause a climate change?
Earth’s axis, shapes, and timing
What are some human factors that can affect earth’s atmosphere?
human activities, energy consuming, deforestation, industrial, and agricultural practice
What is deforestation?
when trees are removed and with fewer trees there is more CO2
