evidence for climate change

Question 1

inter glacial

Answer 1

long warm period

Question 2

glacial

Answer 2

long cold period

Question 3

holocene

Answer 3

lasts 11500 years

Question 4

pleistocene

Answer 4

time between 11500 years and 2.6 milion years

Question 5

quaternary

Answer 5

Holocene and Pleistocene combined

Question 6

fluctuate

Answer 6

to increase and decrease over time

Question 7

dendrochronology

Answer 7

tree rings-
many trees are sensitive to change in temp, sunlight and rainfall
trees develop rings in long term sequences
4500 year old pines, USA
records can go back 10 000 years ago
good but local
difficult to determine the importance of weather conditions. - temp, wind, sunlight , rain

Question 8

retreating glaciers

Answer 8

fairly reliable since 1880
glaciers change due to climate change, alps grow and shrink due to response at climate change.l
old photos can be used to compare retreat
glaciers were biggest at 1850s, little ice age
glaciers shrunk since 1850s

Question 9

ice core

Answer 9

records go back 800 000 years
ice cores match each other so data is reliable
Greenland and arctic ice produce best records#
ice contains the air, oxygen, and carbon dioxide so scientist can produce an image on how it would of been like

Question 10

how to extract ice core s

Answer 10

scientist drill a 3 km deep cores which show a series of rings per years worth of snow fall