climare change and glaciation

Question 1

greenhouse conditions

Answer 1

• the climate is reletivley warm and ice sheets retreat
• the earth becomes free from large ice masses
• meltwater enters the oceans raising the sea level

Question 2

ice house conditions

Answer 2

• the climate cools to such an extent that precipitation falls as snow and hail instead of rain
• this creates new glacieres and increases the spread of ice sheets at the poles
• ice holds water in a solid state lowering the sea level

Question 3

how long ago was the…

the quanternary period

Answer 3

2.6 million years ago to the present day

Question 4

the quanternary period includes

Answer 4

the pleistocene epoch (2.6 million - 11700 years ago)
the holocene epoch (11700 years ago to the present day )

Question 5

in the

Pleistocene epoch

there were…

Answer 5

there were fluctuations in global temperatures where colder glacial periods were intercepted by warmer interglacial periods

Question 6

the

glacial period

is where…

Answer 6

where ice advanced and sea levels fell

Question 7

interglacial period

Answer 7

where ice retreated and sea levels rose

Question 8

glacial periods lasted

Answer 8

100,000 years

Question 9

interglacial periods lasted

Answer 9

10,000 -15,000 years

Question 10

the Last Glacial Maximum

was when

Answer 10

when ice sheets were at there largest
it affected the UK about 21,000 years ago

Question 11

what covered much of the UK

Answer 11

polar ice sheets. most of southern europe was periglacial

Question 12

periglacial

Answer 12

an area which goes through frequent cycles of thawing and freezing

Question 13

loch lommond stadial was…

Answer 13

11, 000