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Description
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
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Created by Malachy Moran-Tun
about 3 years ago
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| Question | Answer |
| What was the Early Atmosphere Comprised of and How? | > Little to No O₂ > Large Amount of CO₂ > Water Vapour (H₂O) > Small Amounts of Other Gases (Methane / Ammonia) > Made from Volcanic Activity |
| How were the Oceans Formed? | The Water Vapour from the Early Atmosphere's Volcanic Activity Condensed to form Oceans |
| What 3 Ways are Theorised to be Responsible for the Reduction of CO₂ in the Atmosphere? | 1. CO₂ Dissolved into Oceans, some of which Remains Today 2. Algæ and Plants in the Sea Absorbed CO₂ → They Decayed into Fossil Fuels 3. CO₂ Used to Create Shells of Marine Organisms → Organisms Die → Remains Decay but Shells Remain → Sedimentary Rocks |
| How was Nitrogen Gas (N₂) introduced into the Atmosphere? | > Formed by Ammonia Reacting with Oxygen > Released by Denitrifying Bacteria |
| How was Oxygen (O₂) introduced into the Atmosphere? | > Green Plants Evolved > Through Photosynthesis, CO₂ → O₂ |
| What did the Build Up of Oxygen Allow for? | > Ozone Layer (O₃) > Blocked Harmful Rays from the Sun > Enabled Complex Organisms to Evolve |
| What is Today's Atmosphere Primarily made up of? | > 78% Nitrogen (N₂) > 21% Oxygen (O₂) > <1% CO₂, H₂O, Noble Gases etc. |
| What is the Chemical Test for Oxygen? | Gas Relights a Glowing Splint |
| What is the Greenhouse Effect? | > Greenhouse gases absorb heat energy > Heat energy is from the Sun > Earth absorbs a lot of the heat energy > The Greenhouse gases re-emit the heat energy that is radiated back from the Earth > This heats up the Earth's surface |
| How are Historic CO₂ Levels Found? | > Antarctic ice contains small pockets of air > Cannot be used to asses global change since they are from one place only > Not as accurate and subject to natural error |
| Where were the Earliest Temperatures Recorded? | Central England |
| What is Global Warming? | The increased temperature from increased CO₂ levels |
| What is Climate Change? | The change in weather patterns from the increase in temperature |
| What are some Examples of Fossil Fuel Usage? | > Burning Fossil Fuels in Power Stations to Produce Electricity > Burning Fossil Fuels to Heat Homes > Burning Petrol / Diesel in Cars |
| What is Methane and how is it Naturally Produced (mainly)? | > Powerful greenhouse gas > Produced by the bacteria in livestock's stomachs |
| What are the Effects of Climate Change? | > Increased sea levels - coastal flooding > Changing weather patterns - more storms > Changing temperature and rainfall patterns > Animals moving to different areas > Coral bleaching |
| What are some ways Climate Change can be Mitigated? | > Reducing the amount of greenhouse gases we add to the atmosphere > Removing CO₂ from the atmosphere > Helping people cope with weather changes (what a bad excuse for climate change amirite) |
| https://www.youtube.com/watch?v=xuCn8ux2gbs | https://www.youtube.com/watch?v=xuCn8ux2gbs |
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