causes of long term climate change (quaternary ice age)

Question 1

the quaternary

Answer 1

a geological period representing the last 2 million years of earths history. characterised by ice house conditions

Question 2

ice house

Answer 2

permanent ice in polar regions

Question 3

holocene

Answer 3

11,500 years before present to present, interglacial period

Question 4

devensian

Answer 4

80,000 ybp to 11,500 ybp, glacial period

Question 5

ipswichian

Answer 5

100,000 ybp to 80,000 ybp, interglacial period

Question 6

wolstonian

Answer 6

140,000 ybp to 100,000 ybp, glacial period

Question 7

hoxnian

Answer 7

140,000 ybp to 180,000 ybp, interglacial period

Question 8

milankovitch cycle

Answer 8

long term cyclical changes between glacial and intergalcial periods are to do with the changes in earths orbit around the sun, leads to variation in the intensity of insolation

Question 9

present day earth orbit

Answer 9

current orbit is 365 1/4 days. axis is tilted towards the sun at 23.5 which causes seasonal variations due to where the sun is overhead in the tropic of cancer (23.5 N) and capricorn (23.5 S)