Presentation on theme: "GLOBAL WARMING. IN GROUPS: EXAMINE EVIDENCE DECIDE ON RELEVANCE PREPARE EXPLANATION NOMINATE SPOKESPERSON."— Presentation transcript:
IN GROUPS: EXAMINE EVIDENCE DECIDE ON RELEVANCE PREPARE EXPLANATION NOMINATE SPOKESPERSON
MODEL PROJECTIONS OF TEMPERATURE IN THE FUTURE A
CARBON DIOXIDE RISING BUT NOT TEMPERATURE B
RISING SEA LEVELS C
CHANGES IN TEMPERATURE D
GLOBAL POPULATION E
CHANGES IN THE SUN AND THEIR EFFECTS F
The sun is a constantly changing series of explosions! The sun on 24/6/09 from the SOHO spacecraft SOLAR CONTROL OF CLIMATE?
The ellipticity of the earth’s orbit varies over a 100,000 year cycle. This changes the solar flux received at the earth by as much as 30%. Milankovitch cycles Named after the man who proposed them as the explanation of the ice ages in the Pleistocene. These are variations in the Earth’s orbit and inclination.
Further, the tilt of the earth’s axis changes slightly over a 40,000 year cycle
The tilt angle of the Earth also show precession