Evidence for Climate Change

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere
• lower levels of nitrogen in the atmosphere
• higher levels of carbon dioxide in the atmosphere
• higher levels of oxygen in the atmosphere

Which of these is NOT a consequence of global warming to our oceans? (choose all that apply)

• Acidification: Ocean is becoming more acidic.

• Sea level is rising due to land ice melting.

• Coral bleaching which results in them dying.

• Animals are getting strangled by plastic 6 pack rings.

If the climate becomes warmer, sea levels will _____________.

• rise,but this will have no impact on humans
• fall, which will increase the amount of available land
• rise, causing some pacific islands to disappear
• fall, which will have no impact on humans

Carbon is stored in

• Trees and other living things
• Oceans
• underground in soil and fossil fuels
• All are correct

What is the main reason sea levels are rising rapidly?

• melting sea ice

• increase of water vapor in atmosphere

• melting land ice

• increase in floods

When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the algae living in their tissues, causing them to turn completely white.

• Coral Bleaching

• Ocean Acidification

• Smog

• Ozone Depletion

What does this picture represent?

• Coral Bleaching

• Ocean Acidification

• Smog

• Ozone Depletion

What causes the seasonal fluctuations in Carbon Dioxide levels?

• Plants, because when they are growing back from the winter, they absorb more carbon dioxide.

• Plants, because when they are growing back from winter, the produce more carbon dioxide

• Humans, because we tend to burn less fossil fuels in the summer

• Humans, because we tend to burn more fossil fuels in the summer

Which of the following is NOT evidence that species compositions are changing due to climate change?

• Elephant species are becoming extinct due to poaching

• The number of species of trees has declined

• Animals that live on ice caps are decline in numbers because the ice caps are melting

• Corals are bleaching and dying due to rising temperatures and acidification

What can scientists use ice cores to study?

• What was in the atmosphere at the time the ice froze

• How human activity will affect the temperatures in the future

• What causes the ice caps to melt

• What species have gone extinct due to climate change