Climate Change Unit Intro Refresher

Climate describes patterns of weather conditions within a large region over a short period of time.

• True

• False

Over the past 100 years, scientists have observed a(n) _______________ in the earth's ___________________ temperature.

• Increase, maximum

• Decrease, average

• Decrease, maximum

• Increase, average

Which negative health outcome(s) in Canada can worsen with climate change? (You can choose more than one!)

• Allergies

• Asthma

• Flood-related deaths

• Food availability

More combustion leads to _______________ carbon dioxide in the atmosphere

• More

• Less

• Equal

• No

Less photosynthesis due to deforestation leads to ____________ carbon dioxide in the atmosphere.

• More

• Less

• Equal

• No

Carbon dioxide reacts with _____________ to form carbonic acid, which acidifies oceans and harms aquatic life.

• H2O2

• Greenhouse gases

• Water

• Sunlight

The following statement is an example of what feedback system?

"An increase in the Earth’s temperature causes ice to melt, so more radiation is absorbed by Earth’s surface, leading to further increases in temperature."

• Feed forward

• Negative feedback loop

• Feed backward

• Positive feedback loop