4/22/16. Table of Contents # Quiz Review Do-Now. Planner: Environmental Science. Read 13.2

Transcription

1 Environmental Science Monday, April 18, 2016 Do-Now: 13.1 Quiz Review Do-Now 1. Write down today s FLT 2. Describe the weather of Los Angeles 3. Describe the climate of Los Angeles 4. IdenHfy four factors that influence climate 5. Summarize what El Niño is Finished? Take out your planner and ToC. Announcements Taking APs? Make sure you pay your $5 exam fee in the student store Grade level success assemblies this week Turn in ALL missing work Next week: WASC visits Read 13.2 Planner: Table of Contents # Quiz Review Do-Now Standard HS-ESS3-1: Construct an explanation based on evidence for how the availability of natural resources, occurrence of natural hazards, and changes in climate have influenced human activity. FLT I will be able to demonstrate my understanding of climate by completing 13.1 Quiz 1

2 ToC J CW Environmental Science Tuesday, April 19, 2016 Do-Now: BrainPOP: Ozone Layer 1. Write down today s FLT 2. IdenHfy two reasons why the sun is important or useful 3. Explain why the sun can also be harmful 4. Define the term ozone layer. Look it up if needed. 5. What might happen if we didn t have an ozone layer? Finished? Take out your planner and ToC. Announcements Grade level success assemblies Wed Report to class first You will be sent out for part of the period P. 2: 11 th grade -- p. 4: 12 th grade P. 6: 10 th grade --p.8: 9 th grade Turn in ALL missing work ALL stamps J Planner: Table of Contents #7 13. BrainPOP: Ozone Layer 14. Ozone Graphing Activity BrainPOP: Ozone Layer Watch the video clip As a group, answer the post-video questions The group with the most correct answers receives +5 dojo points ozonelayer/ 2

3 Standard HS-ESS3-1: Construct an explanation based on evidence for how the availability of natural resources, occurrence of natural hazards, and changes in climate have influenced human activity. Ozone molecules (O3) naturally exist in small quanhhes in the stratosphere FLT I will be able to model and analyze changes in the ozone layer by completing Ozone Layer Graph The ozone layer helps protect us by absorbing UV radiahon from the sun Another chemical, methyl bromide, has been idenhfied as an ozone-deplehng chemical Certain chemicals, such as CFCs, contribute to the deplehon of ozone Methyl bromide is a toxic peshcide that is used to kill insects, weeds, etc. 3

4 ScienHsts use ozone deplehon potenhal (ODP) to compare a substance s ability to destroy ozone with that of CFC-11 In today s achvity, you will graph data to analyze the consumphon of methyl bromide and concentrahons of stratospheric ozone over AntarcHca 1. Dobson units (DU) measure the thickness of the ozone layer. Calculate the thickness of the ozone layer in DU by complehng the equahon below: x = The data table includes eshmates of worldwide produchon of methyl bromide from 1984 to 1996 and the changing thickness of the ozone layer over AntarcHca between 1979 and On your graph paper, label your x-axis On the lej y-axis, label increments of 5,000 metric tons (ex 5000, 10000, 15000) -On the right y-axis, label DU by 10s (80 DU, 90 DU, 100 DU) Use different color pencils to plot the two graphs. à One graph will be metric tons vs. year à The other graph will be DU vs. year 4

5 CW 1. Finish the graphs, then answer the queshons that follow 2. Catch up! Complete all make up work and ToC work Do-Now: Video Notes: Climate Change 1. Write down today s FLT 2. What does climate change refer to? 3. Is climate change a threat now, or is it something we re worried about for the future? 4. Indicate two possible consequences of climate change. 5. Some people don t believe in climate change. Think of one reason why this might be. Finished? Take out your planner and ToC. Announcements Trade in dojo points! 1 point = 1 Cardinal $ 5 points = pencil, pen, or snack 15 points = stamp Turn in ALL missing work ALL stamps J Planner: Table of Contents #7 15. Video Notes: Climate Change Notes Standard HS-ESS3-5: Analyze geoscience data and the results from global climate models to make an evidence-based forecast of the current rate of global or regional climate change and associated future impacts to Earth systems. FLT I will be able to discuss the possible causes and effects of climate change by completing 13.3 Notes Video Notes We will watch two videos First video: Climate Change 101 List four possible effects of climate change 5

6 Video Notes Second video: Why People Don t Believe Summarize why people might not believe in climate change in 2-3 sentences. Let s Share Video Notes 13.3 Notes 13.3: Climate Change Noise level 0 Copy down all bolded ideas Raise your hand to question/ comment Be prepared to pair-share 6

7 Recall: The Greenhouse Effect Recall: The Greenhouse Effect Earth s atmosphere contains gases such as carbon dioxide (CO 2 ) that help act like the roof of a greenhouse Recall: The Greenhouse Effect During the day, the Sun shines through the atmosphere Recall: The Greenhouse Effect Earth s surface warms up in the sunlight At night, Earth s surface cools, releasing heat back into the air Recall: The Greenhouse Effect Some of the released heat is trapped by the greenhouse gases in the atmosphere, which helps keep our Earth warm Recall: The Greenhouse Effect Greenhouse gases = gases that absorb and reradiate IR from the sun Include water vapor, CO 2, CH 4 and nitrous oxide 7

8 Measuring CO 2 in the Atmosphere Measuring CO 2 in the Atmosphere When CO 2 is released into the air, much of it dissolves into the ocean or is used by plants for photosynthesis Measuring CO 2 in the Atmosphere Because many plants lose their leaves or die back in the winter, they absorb less CO 2 à there is more CO 2 in the atmosphere during the winter Rising CO 2 Levels Rising CO 2 Levels Due to the increase in burning fossil fuels, CO 2 levels in the atmosphere have increased. Rising CO 2 Levels CO 2 levels in the atmosphere today are higher than they have been for the last 420,000 years, and probably for the last 20 million years 8

9 Greenhouse Gases and Earth s Temperature Greenhouse Gases & Earth s Temperature Due to the increase in greenhouse gases in the atmosphere, too much IR is being rereadiated to Earth s surface à this leads to an increase in global temperatures Greenhouse Gases & Earth s Temperature This increase is from activities such as power plants, cars, and clearing forests Global Climate Change Global Climate Change Global warming = gradual increase in average temperature at Earth s surface Global Climate Change This increase correlates to the increase in greenhouse gases in the atmosphere 9

10 Global Climate Change This is often referred to as global climate change due to the associated changes in precipitation, frequency of fires, and extreme weather events. Modeling Climate Change Scientists use computer models to make predictions about future changes in climate The models must constantly be updated with new information Modeling Climate Change Modeling Climate Change The models predict that increasing temperatures are driven by human activity in addition to natural variability 1. Rising Sea Levels: -As water warms, it expands - Ice is melting, which adds to sea levels -Lands are slowly being flooded over 10

11 2. Global weather patterns: -Threats include changes in precipitation patterns, more severe storms, and flooding 3. Human Health Problems: -Threats include increased heat-related deaths, longer allergy season, and increased mosquito-related diseases (ex/ malaria) 4. Agriculture: -Changes in climate and increased droughts threaten agriculture 5. Effects on Plants and Animals: -Many plant species would lose their home range due to climate requirements(ex/ plants in need of cooler temps) 5. Effects on Plants and Animals: -Impact on food chains (ex/ a reduction in zooplankton due to warmer surface waters à many animals feed on zooplankton) Reducing the Risk 11

12 The Reducing the Risk Reforestation projects aim to reduce CO2 Trees help absorb CO The Reducing the Risk Kyoto Protocol Global treaty established to reduce greenhouse gas emissions The countries most responsible for greenhouse gas emissions, including the U.S., have not ratified the treaty Pair-Share-Respond What are examples of greenhouse gases? Why is the greenhouse effect GOOD? What makes the greenhouse effect BAD? IdenHfy three consequences of global climate change 5. What is one way to help reduce the effects of climate change? CW Flip your do-now over Write down: 13.1 Formative Assessment Answer questions 1-6 on page 345 Quietly work or study when finished 12