Greenhouse effect
Green house gases make up about 1% of the earths atmosphere.
True or false?
True.
Name 3 different consequences of climate change
•Species Distribution
•Health and Disease
•Extreme weather conditions
•Rising temperatures
•Changing sea levels
•Coral bleaching
List three human activities contributing to climate change
•Deforestation
•Burning of fossil fuels
•Overpopulation/Urbanisation
•Pollution
What is climate change mitigation?
- Means doing things that make fewer greenhouse gases.
- Also means doing things that remove greenhouse gases from the air.
Where can solar radiation go when it reaches the earths atmosphere?
Either is absorbed or released into space.
What is ocean acidification?
- Carbon dioxide dissolves into the ocean, increasing the amount of CO₂ in seawater.
- This causes the pH to drop, making the water more acidic.
- The acidity bleaches coral and damages its structure.
- Coral becomes stressed and expels the algae it needs to survive.
What is deforestation and why is it such a negative to the environment?
- Clearing large areas of trees means removing forests to get wood or use the land.
- This destroys habitats for animals that live there.
- Releases out CO2 in the atmosphere.
Who used the method of Biochar and why is it useful?
- Method used by First Nations People
- Stored in soil, controlling the release of carbon dioxide into the atmosphere when plants decay.
Name 3 different greenhouse gases.
Methane
carbon dioxide
water vapour
ozone
nitrous oxide
What is the main role of snow and ice in the hydrosphere?
To reflect solar radiation back into space
One of the biggest contributors to CO2 emissions
Burning fossil fuels
What is one way using renewable energy can help reduce climate change?
- Renewable energy (like solar, wind, and hydro) makes less greenhouse gas.
- It replaces energy from coal and gas, which produce lots of CO₂.
- This helps slow down global warming.
What do greenhouse gas molecules do?
- They absorb some of the energy
- trapping in energy and emit it into the atmosphere
- Heating up the earth
What happens when the amount of snow/ice decreases?
- When snow and ice melt, there is less white surface to reflect sunlight.
- More solar energy gets absorbed by land and water instead of bouncing back into space.
- This extra absorbed heat makes the Earth warm faster (increased global warming).
- Melting ice also adds more water to the ocean, causing sea levels to rise
True or False:
Small changes in large ocean currents can produce changes in marine life and climate.
True
List some ways that greenhouse gases can be mitigated
•Electric transport
•Reduce consumption of electricity generated by fossils
•Reduce human consumption of meat – opting for plant based food
•Increasing awareness of the effects of climate change (Education)
•Reforestation (planting new trees)
1. Why is the ENHANCED greenhouse effect dangerous?
2. Do we need the greenhouse effect? True or false?
1.
- There are too many greenhouse gases in the atmosphere.
- This means more energy from the Sun stays trapped around Earth.
- Less energy escapes back into space, so the balance is not equal.
- This trapped energy makes Earth’s temperature go up (global warming).
2. True
How do higher temperatures increase health and disease?
- Hotter temperatures make heatwaves last longer.
- Long heatwaves can make people dehydrated.
- Dehydration puts extra strain on the heart.
- Heatwaves can also cause sleep problems because the body struggles to cool down.
Why is the global conveyor belt important?
- It spreads heat across the oceans.
- Regulates temperatures
- It carries nutrients for marine ecosystems.
How can education help reduce climate change?
- Makes people more aware
- Teaching people about climate change helps them make better choices, like saving energy and reducing waste.