hazardous earth Flashcards
What is the name given to the cooling periods in the earths history?
Its called an glacial period
What are the four natural causes of climate change?
Volcanic activity
Asteroid impact
solar flares
orbital theory
How has the volcanic activity impacted upon the earths climate in the past?
It has caused cooling of the climate as the ash and debris shot out into the sky after an eruption can block out the suns light and reflect it back out into space.
What are three pieces of evidence for natural climate change?
Historical records
Tree ring analysis
Ice core analysis
How to historical records provide evidence of past climate change?
It can showcase past events of extreme cooling or extreme warming up of a location via paintings or diaries. E.g the Thames freezing over.
What is the greenhouse effect?
The greenhouse effect is describing greenhouse gases getting trapped in the earths atmosphere as a result trapping heat as well.
Give an example of a greenhouse effect!
Methane
or
Carbon dioxide
Name at least three human activities that enhance the greenhouse effect!
Transport
Energy production
Agriculture
Industry
What are three pieces of evidence for human induced climate change?
Global average temperature
Sea level rise
Arctic sea ice reduction
What are two reasons for global sea rise?
Thermal expansion
Ice melting into the sea causing sea level rise
Identify at least three possible consequences of climate change!
Famine
Flooding extinction
Loss of bio diversity
Crops dying
Why is it difficult to make projections for how much the sea levels could rise up?
It is difficult because we don’t know how dependent we may become on fossil fuels in the future.
Where does the Earth receive all its heat energy from?
The sun
Why is the equator the hottest part of the Earth?
The suns light hits the planet most directly there
Describe the climate at the equator
hot and wet
