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OCEANS ON THE EDGE 4

The Impacts of Climate Change on Oceans. OCEANS ON THE EDGE 4. Key words: sea level rise bleaching environmental refugees. Starter: Watch this clip – what impacts of climate change are discussed? http://www.youtube.com/watch?v=mkCWI7CwR_0. Learning Objective:

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OCEANS ON THE EDGE 4

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  1. The Impacts of Climate Change on Oceans. OCEANS ON THE EDGE 4 Key words: sea level rise bleaching environmental refugees Starter: Watch this clip – what impacts of climate change are discussed? http://www.youtube.com/watch?v=mkCWI7CwR_0 Learning Objective: To be able to describe and explain how climate change effect marine ecosystems

  2. Watch this clip to see how climate change could effect coral reef. • http://www.youtube.com/watch?v=miLyqOrnwZc Copy and complete the following (words below to help) • Many of the world’s coral reefs suffer from_____. The coral losses _____ (bleaches) due to the loss of _____ with which it lives. Changes in ocean temperature by 1-2oC can _____ coral. Eventually the bleached reefs weaken and _____. colour stress bleaching algae collapse

  3. Direct Impacts of Climate Change • Coral bleaching • More extreme weather; can cause pollution and siltation • Extra freshwater input from ice sheets and glaciers will affect salinity, which could change ocean currents. Ocean currents move heat around the world, changes in this could have a major impact of marine food webs as some species move away from areas.

  4. Indirect Impacts • Rising sea levels from: • Thermal expansion (warmer water) • More water from melting glaciers and ice sheet • Rising sea levels causes • Coral reefs submerged • Delta areas are risk from storm surges and flooding • Low-lying countries /islands submerged = environmental refugees • Ports close, hurting the economy. Nile Delta, Egypt Tuvalu

  5. Watch this clip to see how climate change could effect Tuvalu. • http://www.youtube.com/watch?v=DSmN8Eq4qEg

  6. The effects of sea level rise • Use the green book page 113 to complete your table to show how sea level rise could effect people around the world. • Answer this exam question (6 marks) • Using examples, explain the impacts of climate change on developed or developing countries. For 6 marks, you must use named places You should choose your examples from either developed of developing countries. What good/bad things will happen, and why.

  7. And finally ... • What might the children of Tuvalu be saying about their future?

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