Past Climates

Objective: To be able describe how climate has changed in the distant and recent past

Past Climates• Key terms:• Climate – The average weather conditions of a place. It must

be measured using an average of at least 30 years of data• Glacials – A long period of time during which the Earth’s

glaciers expanded widely = ICE AGE• Interglacials – A long period of warmer conditions between

glacials• Quaternary Period – The most recent major geological period

of the Earth’s history consisting of the Pleistocene and the Holocene

Carbon dioxide and temperature levels over the last 800,000 years

Answer questions q2 all parts p25 Green book

Changes in the Earth’s average temperature during the past 450,000 years

Answer Skills Builder 1 p28 Purple Book

Ice cover in the last Ice AgeAnswer question 3 p25 Green Book

Temperature changes in more recent times

The Medieval Warm Period and the Little Ice Age Make notes on the evidence for these periods p25 Green Book and p31 Purple Book

Evidence for climate change

http://www.bbc.co.uk/learningzone/clips/evidence-of-climate-change/1490.html

Watch the clip and make notes on the following pieces of evidence for climate change:• Tree rings• Ice cores