Testing

• What can fluctuations in solar activity affect?

  Global temperatures
• What can changes in oceanic circulation impact?

  Global temperature
• What do volcanic eruptions release into the atmosphere that can lower global temperatures?

  Volcanic dust
• What does worldwide deforestation increase by reducing carbon storage?

  Carbon dioxide levels
• What do landfill sites produce that contributes to climate change?

  Methane
• What does the burning of fossil fuels produce that leads to global warming?

  Carbon dioxide
• What do increases in rice production and cattle farming contribute to by increasing methane production?

  Atmosphere pollution
• What are Milankovitch cycles?

  Variations in the tilt and/or orbit of the Earth around the Sun
• What may have caused the Little Ice Age of 1850-1850?

  A decrease in solar activity
• What are El Nino and La Nina?

  Periodic warming and cooling of areas of the tropical Pacific Ocean
• What did the eruption of Mount Pinatubo in 1991 release into the atmosphere that caused a dip in global temperatures?

  17 million tonnes of sulphur dioxide
• Why are trees known as the lungs of the planet?

  They take in CO2 and release oxygen
• What happens to waste when it decomposes in landfill sites?

  It produces methane that goes into the atmosphere
• How has increased car ownership contributed to global warming?

  Most cars run on petrol which releases carbon dioxide into the atmosphere
• Why do small increases in methane have a larger impact on global warming?

  Because methane is a stronger greenhouse gas
• What effect does more tilt in the Earth's axis have on seasons?

  Warmer summers and colder winters
• What are the main factors that can impact global temperatures?

  • Fluctuations in solar activity
  • Changes in oceanic circulation
  • Volcanic eruptions
  • Worldwide deforestation
  • Landfill sites
  • Burning of fossil fuels
  • Increases in rice production and cattle farming
  • Milankovitch cycles
• What are the effects of volcanic eruptions on global temperatures?

  • Release of volcanic dust into the atmosphere
  • Shielding the Earth from incoming insolation
  • Lowering global temperatures
• What are the effects of deforestation on the atmosphere?

  • Increases carbon dioxide levels
  • Reduces the storage of carbon
• What are the effects of landfill sites on climate change?

  • Production of methane from decomposing waste
  • Contribution to climate change
• What are the effects of burning fossil fuels on global warming?

  • Production of carbon dioxide
  • Leads to global warming
• What are the effects of increases in rice production and cattle farming on the atmosphere?

  • Increase in methane production
  • Contribution to atmosphere pollution
• What are the effects of Milankovitch cycles on global temperature?

  • Variations in the tilt and/or orbit of the Earth around the Sun
  • Affect global temperature
• What are the effects of the Little Ice Age of 1850-1850?

  • Caused by a decrease in solar activity
  • Resulted in cooler global temperatures
• What are the effects of El Nino and La Nina on the tropical Pacific Ocean?

  • Periodic warming (El Nino) and cooling (La Nina) of areas
  • Impact on global temperature
• What are the effects of the eruption of Mount Pinatubo in 1991?

  • Release of 17 million tonnes of sulphur dioxide
  • Caused a dip in global temperatures
• What are the effects of deforestation in the Amazon?

  • Over 1000sq km cleared in 2020
  • Reduction in CO2 absorption and oxygen production
• What are the effects of increased car ownership on global warming?

  • Over 1 billion cars recorded in 2011
  • Most cars run on petrol, releasing carbon dioxide
• What are the effects of methane on global warming?

  • Methane is a stronger greenhouse gas
  • Small increases have a larger impact
• What are the effects of more tilt in the Earth's axis?

  • Warmer summers and colder winters
  • Less tilt has the opposite effect
• How much methane does one cow release on average each year?

  100kg
• How much land was cleared in the Amazon in 2020?

  Over 1000sq km
• How many cars were recorded in 2011?

  Over 1 billion