KS5 Climate Change

Which of these sets of fuels could be considered to be biofuels?

• Biodiesel, ethanol, hydrogen, methane
• Biodiesel, ethanol, hydrogen, propane
• Biodiesel, ethanol, methane, propane
• Biodiesel, hydrogen, methane, propane

Which of the following are both greenhouse gases?

• Carbon dioxide & methane
• Carbon dioxide & carbon monoxide
• Carbon monoxide & nitrogen
• Methane & nitrogen

Some gases in the atmosphere are carbon dioxide, helium, methane, nitrogen and oxygen. How many are greenhouse gases?

• 1
• 2
• 3
• 4

Which of the following causes global warming?

• Decrease in carbon dioxide and methane in atmosphere to trap IF radiation.
• Decrease in carbon dioxide and methane in atmosphere to trap UV radiation
• Increase in carbon dioxide and methane in atmosphere to trap IF radiation
• Increase in carbon dioxide and methane in atmosphere to trap UV radiation

Which of the following could provide evidence for climate change?

• niche, dendrochronology and ice cores
• niche, dendrochronology and classification
• ice cores, classification and peat bog pollen analysis
• dendrochronology, peat bog pollen analysis and ice cores

What is the best conclusion that can be drawn from these results about the number of forest fires in Brazil?

• Thenumber of forest fires has generally decreased
• The number of forest fires has generallyincreased
• The number of fires in Mato Grosso is always higher than in other areas
• Thereare no clear trends

Which of the following could be caused by an increase in atmospheric carbon dioxide from 398 ppm to 1080 ppm?

• decreased photosynthesis
• global warming
• increased plant respiration
• ozone depletion

The diagram below shows part of the carbon cycle. The processes transfer carbon. Which gases are produced in C?

• carbon dioxide and methane
• carbon dioxide and water vapour
• carbon dioxide, methane and water vapour
• carbon dioxide, oxygen and water vapour

Which describes the relationship between NPP, GPP & R?

• NPP = GPP + R
• GPP = NPP - R
• R = GPP + NPP
• NPP = GPP - R

Which statement describes the role of photosynthesis in the carbon cycle?

• carbon dioxide is oxidised to form organic molecules
• carbon dioxide is reduced to form organic molecules
• organic molecules are combusted to produce carbon dioxide
• organic molecules are decomposed to release carbon dioxide