Transcript Environment
4/18 Bell Work The sum of a four-digit number is a multiple of 9. The first 3 digits are 1, 2, and 3. What is the missing number? 4/18 Schedule Grade AIMS study guide Due today including justifications! Review material for sections you missed Cycles Wksht to Review due TUESDAY AIMS Science Test 4/19!! Sophomores, Aud, 8:30 Bring a book or homework! Assignments: 1. AIMS Study Guide due TODAY 2. Cycles Wkst due TUESDAY 4/19 Bell Work Two hours ago it was as long after 1 o’clock in the afternoon as it was before 1 o’clock in the morning. What time is it now? 4/19 Schedule 2nd and 3rd Hr - AIMS Test Work Cycles Wksht to Review due TODAY Extra Credit AIMS Science Test 4/19!! Sophomores, Aud, 8:30 Bring a book or homework! Assignments: 1. AIMS Study Guide LATE 2. Cycles Wkst due TODAY 4/20 Bell Work Duke Maverick worked for a packaging company. One day, he mixed up the four labels on his table, so he decided to apply them at random. What is the probability that he labeled exactly 3 packages correctly? 4/20 Schedule Notes Ch 6.1 “Interconnected Planet” Directed Reading Ch 6 Work Cycles Wksht Review LATE Assignments: 1. AIMS Study Guide LATE 2. Cycles Wkst LATE Ch 6 “Environment Objectives: 1. Describe biotic and abiotic factors that affect human populations 2. Assess how the size and the rate of growth of a population are affected by birth rate, death rate, immigration, emigration, and carrying capacity of the environment. Unit : The Environment Environment and Pollution How many different types of pollution can you name? What are the effects of pollution? Pollution and Effects List examples of pollution from industry, agriculture, or everyday use. What effects do different kinds of pollution have? Ch 6.1 “An Interconnected Planet” Objectives: Describe how humans and the environment are connected. Differentiate between renewable and nonrenewable resources. Describe how the state of the environment can affect a person’s health and quality of life. Humans and the Environment Humans now live in almost every kind of ecosystem on Earth. The more that the human population grows, the more resources we will need to survive. Humans and the Environment, continued Earth is an interconnected planet: we depend on the environment, and the environment is affected by our actions. Learning about this connectedness helps us care for the environment and ensures that the environment will continue to support us and other species on Earth. Resources Renewable vs Nonrenewable Resources Renewable resources are natural resources that can be replaced at the same rate at which they are consumed. The supply is either so large or so constantly renewed that it will never be used up. Nonrenewable resources are resources that form at a rate that is much slower than the rate at which they are consumed. Renewable resources can still be used up if it is used faster than it can be renewed. Renewable Resources Nonrenewable Resources Resources, continued Most of our energy today comes from fossil fuels. Fossil fuels are nonrenewable energy resources that formed from the remains of organisms that lived long ago. Fossil fuel formation Resources, continued Fossil fuels such as coal, oil, and natural gas, are nonrenewable resources because it takes millions of years for them to form. We use fossil fuels at a rate that is faster than the rate at which they form. So, when these resources are gone, millions of years will pass before more have formed. The Environment and Health Health and quality of life are affected by the state of the environment. Pollution and habitat destruction destroy vital resources like the air we breathe, the water we drink, and the food we eat. The Environment and Health Fish Anyone? Radioactive fish from Japan. Ch 6.2 “Environmental Issues” Objectives: Describe effects of air and water pollution. Explain the effects of fossil fuels on climate change. Identify ways humans disrupt environments. 4/21 Bell Work Sam, Buck, Sid, Slip, and Ari are playing poker. Their cards were laid on the table. Suddenly Sam leaps across the table and pummels Sid who had been the last to deal. King, Queen, Ace 2 Aces and a King 3 Jacks 2 Queens and an Ace 2 Kings and an Ace Why was Sam so angry at Sid? 4/21 Schedule Notes Ch 6.2 “Environmental Issues” Directed Reading Ch 6.2 Work Cycles Wksht Review LATE Assignments: 1. AIMS Study Guide LATE 2. Cycles Wkst LATE Air Pollution Air pollution causes … respiratory problems results in acid rain damages the ozone layer may affect global temperature Acid rain is precipitation that has an unusually high concentration of sulfuric or nitric acids caused by pollution. Acid rain damages forests and lakes. Effects of Acid RainAcid Precipitation Air Pollution, continued Ozone Layer Protects life on Earth from ultraviolet (UV) rays. The ozone layer has been damaged by chlorofluorocarbons (CFCs). CFCs are human-made chemicals that are used as coolants in refrigerators and air conditioners and as propellants in spray cans. Ozone “Hole” Over Antarctica Global Warming Global warming is the gradual increase in the average global temperature. The greenhouse effect is the warming of Earth that happens when greenhouse gases in the air absorb and reradiate heat. Examples: CO2 and water vapor. The greenhouse effect is necessary to keep Earth’s temperatures stable. Global Warming, continued Global temperatures have been rising steadily for many decades. Most scientists think that this increase in temperatures is caused by an increase in CO2. from burning fossil fuels. Global Warming, continued Increasing temperatures could cause serious environmental problems. Melting ice sheets Sea level rise Destruction of coastal ecosystems Changes in weather patterns. Water Pollution Pollution enters groundwater when polluted surface water percolates down through the soil. Run off can contaminate both aquatic habitats and public water sources. Sources Pollutants Agriculture, farms, and lawns Fertilizers and pesticides Factories Industrial waste Roads Oil run off Septic tanks and landfills Nitrogen, human waste, chemicals, heavy metals Water Pollution, continued Fertilizers can run off into a body of water and increase the amount of nutrients in the water. Lots of nutrients means excessive growth of algae. Algal blooms can deplete the dissolved oxygen in the water. Fish and other organisms suffocate. Water Pollution Soil Damage Fertile food. soil allows agriculture to supply the world with Nutrients that make soil fertile come from the weathered rock as well as from bacteria, fungi and the remains of plants and animals. The processes that form just a few centimeters of fertile soil can take thousands of years. Soil Damage, continued The greatest threat to soil is soil erosion. Erosion is a process in which the materials of Earth’s surface are worn away and transported by wind, gravity, or water. Plant and tree roots help hold soil together and protect it from erosion. Many farming methods loosen the topsoil or remove plants that hold the soil in place then it can be washed away by wind or rain. Soil Damage, continued Sustainable agricultural practices can prevent erosion Terracing changes a steep field into a series of flat steps that stop gravity from eroding the soil. In contour plowing, rows are plowed in curves along hills instead of in straight lines. The rows then act as a series of dams, which prevent water from eroding the soil. Planting a cover crop, such as soybeans, restores nutrients to the soil. Crop rotation, or planting a different crop every year, slows down the depletion of nutrients in the soil. Ecosystem Disruption Ecosystem disruptions can result in loss of biodiversity, food supplies, potential cures for diseases, and the balance of ecosystems that supports all life on Earth. Over the last 50 years, about half of the world’s tropical rain forests have been cut down or burned for timber, pastureland, or farmland. This process of clearing forests is called deforestation Ecosystem Disruptions, continued Ecosystem disruption decreases the number of Earth’s species. Biodiversity affects the stability of ecosystems and the sustainability of populations. Every species plays an important role in the cycling of energy and nutrients in an ecosystem. Each species either depends on or is depended on by at least one other species. Ecosystem Disruptions, continued When a species disappears, a strand in a food web disappears. If a keystone species disappears, other species may also disappear. There are many ways in which humans benefit from a variety of life forms on Earth. food, clothing, shelter, and medicine. Ecosystem Disruptions, continued Humans have disrupted ecosystems by intentionally and unintentionally introducing nonnative species. Many species are on the edge of extinction. Extinction is the death of every member of a species. Cane toad in Australia. Salt cedar 4/22 Bell Work Slip shoots an arrow exactly at noon at a target. He continues to shoot one every minute until 1 pm. Assume he hits the target every time. How many arrows will be in the target? 4/22 Schedule Environmental Issues Research Research Day ½ Get notes Ch 6.2 “Environmental Issues” online if missing Work Cycles Wksht Review LATE Directed Reading Ch 6.2 Assignments: 1. AIMS Study Guide LATE 2. Cycles Wkst LATE Environmental Issues Presentation Pick one of the following topics, or get your own approved. -Acid Rain - Light pollution - Air pollution - Deforestation - Specific non-native species - Chemical dumping - Ozone depletion Work alone or in pairs to research. Prep today and MONDAY, Present next week… 4/25 Bell Work Ideas are like rabbits. You get a couple and learn how to handle them, and pretty soon you have a dozen. John Steinbeck Make Ideas your own analogy about ideas. are like ________________ because ____________. 4/25 Schedule Environmental Issues Research Research Day2/2 Get notes Ch 6.2 “Environmental Issues” online if missing Work Cycles Wksht Review LATE Directed Reading Ch 6.2 Assignments: 1. AIMS Study Guide LATE 2. Cycles Wkst LATE Environmental Issues Presentation Pick one of the following topics, or get your own approved. -Acid Rain - Light pollution - Air pollution - Deforestation - Specific non-native species - Chemical dumping - Ozone depletion Work alone or in pairs to research. Prep today and TUESDAY, present FRIDAY… 4/26 Bell Work Terry is half as old as Alice was when Alice was five years older than Terry is now. How old is Terry? 4/26 Schedule Environmental Issues Research Finish Research and Presentation TODAY Present FRIDAY Work Cycles Wksht Review LATE Directed Reading Ch 6.2 Assignments: 1. Cycles Wkst LATE 2. Environ Issues Research & Presentation FRIDAY 3. Ch 6 Dir Rdg TBA The Dead Tell No Tales… Ususally Do you, your family, or friends get flu shots? How often? Why? How dangerous is getting the flu? Compared to HIV? Why do you think scientists were so concerned about swine and bird flu? Contaminated Water Demo Come up to the front bench. Pick any test tube. Some of them are “contaminated.” Pour your liquid into someone else’s test tube and get half back. Repeat with another person. Check to see if you’ve been contaminated. Return test tubes to rack. Contaminated Water Demo Contaminated Water Results blue = clean green = slight contamination yellow = contaminated Was your water contaminated? Can you tell who started the infection? Environmental Issues Brainstorm… Name as many solid, liquid, and gaseous pollutants as you can... The number to beat is _________.