Cycling of Matter in Ecosystems, SNC1W PDF

Cycling of Matter in Ecosystems Lesson 6 Unit 2 - Ecology SNC1W  Cycling of Matter Energy flows through ecosystems when organisms consume other organisms * Energy not created nor destroyed, only transformed * Matter (anything that has...

Cycling of Matter in Ecosystems Lesson 6 Unit 2 - Ecology SNC1W  Cycling of Matter Energy flows through ecosystems when organisms consume other organisms * Energy not created nor destroyed, only transformed * Matter (anything that has mass and volume) is transformed many times and used over again Humans require water and nutrients, which are matter, obtained from food, water, and air This matter does not stay in your body forever – it is replaced over time Estimated that every particle in the human body is replaced at least once every seven years!  Cycling of Matter Ecosystems undergo continuous renewal to maintain a delicate balance All the water and nutrients are from particles that already exist in the environment They are consumed, rearranged, stored, and released in various cycles  The Water Cycle The water cycle is the movement of water as a liquid, solid, or gas around Earth. 1. Liquid water evaporates into water vapour 2. Water vapour condenses forming ice crystals or water droplets 3. Droplets collect to form clouds and fall to Earth as rain, hail, or snow 4. Water enters lakes, oceans, soil, or groundwater and the process starts again 5. Plants release water from their leaves in a process called transpiration Try labeling the water cycle to see how much you understand right now… check your answer in one minute!  Label the diagram of the water cycle in your notes! The Water Cycle condensation precipitation transpiration (rain, hail, snow) evaporation surface runoff ocean groundwater Water Cycle Video  The Carbon Cycle Carbon is found in both biotic and abiotic features Carbon in the form of carbon dioxide and sugars is cycled during photosynthesis and cellular respiration During the carbon cycle, carbon moves between the biotic and abiotic parts of ecosystems  Carbon Deposits Most carbon on Earth is not cycled It is stored in deposits such as coal, limestone, ocean sediments, shells of marine animals, oil, and natural gas (methane or CH4) These form when decomposed organisms are compressed over millions of years  Carbon Deposits: Coal mines  D Limestone (CaCO3) Marine Shells Ocean sediments & dissolving CO2 in Oceans Oil Natural Gas (CH4 or methane) The Carbon Cycle  The Carbon Cycle Carbon Cycle Video  Human Activities Change the Carbon Cycle Auto Emissions – The fuel we burn is made from carbon-rich fossil fuels such as oil and natural gas – Stored carbon is released into the atmosphere as carbon dioxide and carbon monoxide Deforestation – Clearing forests releases carbon trapped in trees when they are burned or decompose An oil rig removing oil from the lithosphere https://www.youtube.com/watch?v=hgFpvDNfXOk&ab_channel=NASAeClips (6 min)  The Nitrogen Cycle Most nitrogen is in the atmosphere. It is converted into a useful form for living things by nitrogen fixing bacteria and lightning. Humans also add nitrogen to the soil as fertilizer. Nitrogen is an important nutrient in soil and is absorbed by producers, passed to consumers and up the food chain. Nitrogen is needed by living organisms to make DNA and protein A plant with nitrogen deficiency:  The Nitrogen Cycle Nitrogen Cycle Video  Fake Test! Which cycle are the following pictures a part of? Volcanism  Carbon Cycle Volcanism moves carbon from: – Lithosphere Into: - Atmosphere Condensation  Water Cycle Condensation moves water from: atmosphere Into the: hydrosphere Fertilisers  Nitrogen Cycle Fertilisers are problematic when they get into: hydrosphere Called: eutrophication Deforestation  Carbon Cycle Deforestation causes carbon to move from: biosphere Into: atmosphere Lightning  Nitrogen Cycle Lightning moves nitrogen from the: atmosphere Into the: lithosphere as nitrites and nitrates and THEN it goes into the biosphere Transpiration  Water Cycle Transpiration moves water from: biosphere Into the: atmosphere Bacteria  Carbon & Nitrogen Cycle Carbon Cycle: Bacteria perform cellular respiration Move carbon from: – biosphere to atmosphere AND… Decomposition Move carbon from: – Biosphere to lithosphere/atmosphere Nitrogen Cycle: They fix nitrogen Move nitrogen from: – atmosphere to the biosphere Reforestation  Carbon Cycle Reforestation moves carbon from: atmosphere Into: biosphere Legumes with Root Nodules  Nitrogen Cycle Bacteria in nodules move nitrogen from: atmosphere/litho sphere Into the: biosphere Activities to Try on Google Classroom… 1. Consolidation task 2. Handouts to practice the cycles 3. Watch the videos to see if you’re understanding our lesson.