Physical Factors Causing Climate Change

Question 1

Variations of solar energy

Answer 1

• TMT we may get flares/sunspots which raises global

temps

Question 2

Volcanic eruptions results in large quantities of dust

Answer 2

• TMT the dust in the air shields the sun’s energy coming
  into the earth
• TMT global temps will get cooler
• However some scientists argue that large eruptions
  can raise global temps TIB the dust can act like a
  blanket, trapping the sun’s heat
• TMT this process is similar to The Greenhouse Effect

Question 3

Milankovitch Cycles

Answer 3

• TMT There will be variations in the tilt/orbit of the earth
• TMT these cycles can increase the amount
  solar energy produced which leads to the warming of
  the earth

Question 4

Changes in oceanic circulation

Answer 4

• Such as the periodic warming of the El Niño + the
  cooling of the La Niña TMT global temps are
  increased/decreased

Question 5

Permafrost melts naturally in tundra areas on spring/summer thaw

Answer 5

• TMT Methane gas is released which acts as a

greenhouse gas, trapping energy + warming the earth