Climate Change Flashcards
What has been the mean global air temprature over the past million years
13 degrees celcius
When was the last ice age
We are currently in an ice age
When did temperatures start to rapidly rise.
1900
Are tempeature and CO2 concentration linked?
Yes
how can you tellhpe old a tree is
A tree has rings, the amount of rings are the amound of years
Name seven peices of evidence for climate change
Glacial retreat, glacial change, islands dissappearing, global warming, death of species, extreme weather and the declining arctic sea ice
Are greenhouse gasesnaturally occuring
Yes
What is the greenhouse effect?
The warming of the atmosphere as gases such as CO2, CH4 and water vapour absorb heat enegey radiated from the earth
How much of the worlds atmosphere is taken up by carbon dioxide
0.04%
What animal is a tonne of CO2 comparable to
An adult giraffe
How can we use ice cores as evidence for climate change?
By analysing how many bubbles are inside each layer
By measure the amounts of differen types of exygen atoms in the water
What historical sources can we use to find out about climate change
Old photos, drawings, written records and idaries
Which country emits the most greenhouse gases
China
What percent of global emissions come from china
26.6%
What percentage of global greenhouse gas emissions come from the top ten greehouse emitters?
60%
What is the largest factor for greenhouse gas emissions?
Energy supply
What food has the largest climate impact?
Beef
How many tons of meat will have been eaten by 2050k
456 million tons
Are there positives of climate change?
Yes
How many days per month in summer could the temperature be above 25° if the global temperature rises by 4°
20 day
How many days per month in summer could be rainy if the global temperature rises by 4°
5 days
By 2050, in london, what is the mean predicted temperature change?
+2.5° celcius
When was the wettest british winter?
December 2013 - February 2014
What is the warmest brotish year?
2022
