THE GREENHOUSE EFFECT Stephanie Seto. The Carbon Cycle.

Slides:



Advertisements
Similar presentations
Human Activity.
Advertisements

The Effect of Humans On Ecosystems and Biological Cycles On Ecosystems and Biological Cycles.
Climate Change An Inconvenient Truth. MAIN IDEAS 1.Human use of resources is releasing increasing amounts of CO 2 into the atmosphere. 2.This is leading.
Miss Parson – Allerton Grange School
Greenhouse Effect. The Greenhouse Greenhouses are used to grow plants, especially in the winter. The glass panels of the greenhouse let in light but keep.
Greenhouse Effect How we stay warm. The Sun’s energy reaches Earth through Radiation (heat traveling through Space)
Topic 5.2. The Carbon Cycle Photosynthesis takes CO 2 out of the atmosphere Cell Respiration by all organisms puts CO 2 into the atmosphere Transfer.
Cool Facts About Global Warming Donna Bowman Educational Outreach Coordinator SCDHEC - Bureau of Air Quality.
Global Warming Dimi Voliotis. What is Global Warming? Global Warming is the rise in the overall temperature of the earth's atmosphere, generally attributed.
Teacher: Samarripa GLOBAL WARMING. The Global Warming & The Greenhouse Effect.
Objective: Understand Causes, Effects and Solutions of Global Warming
+ YEAR 10 EARTH AND SPACE SCIENCE (ESS). + EARTH & SPACE SCIENCE 2 parts to the unit: EARTH – Global systems & SPACE – Origins of the universe We’re going.
1 THE CARBON CYCLE AND GLOBAL WARMING. 2 CARBON CYCLE Movement of carbon between the atmosphere, oceans, biosphere, and geosphere Movement of carbon between.
The greenhouse effect Topic 5.2.
Global Warming What Is It?.
A lesson on the Environment and Human Impact 8th Grade Science
I. Background A. global warming: the gradual increase in planet-wide temperatures B. temperature of Earth depends on amount of sunlight received, amount.
Sumaya S. Br.Nassry Mohammad 9th Grade Girls
Pollution. Smog smog – mixture of chemicals that forms a haze in the air (Nitrogen Oxides etc) smoke from cars and factories release the chemicals.
Earth Science Chapter 11.2 Climate Change.
Climate change.
Backward Forward Home Exit II. Is the greenhouse effect human enhanced? 1. What is the greenhouse effect? Greenhouse is: a house made of glass allows.
Global Warming.
Causes Effects Solutions
Unit 9G Lesson 4: Global Warming Objective: to learn about the causes and effects of global warming. 4, 11.
(Optional Game) (Site information came from)
Green house effect is an important natural process. Without it, the Earth would be too cool for the survival of living organisms. Carbon dioxide is the.
The Sun’s energy passes through the car’s windshield. This energy (heat) is trapped inside the car and cannot pass back through the windshield, causing.
PPT Lecture: Global Warming. Slide 2 - Greenhouse Effect The process of the atmosphere trapping heat from the sun. Without the atmosphere, heat would.
There are gases in our Earth’s atmosphere which can trap heat toward the Earth’s surface. This is called the greenhouse effect. The greenhouse effect.
Climate Change and Greenhouse Effect Notes. What we want to know? What is climate change? What is the greenhouse effect? How will climate change affect.
Geochemical Cycles.
The Precautionary Principle IB Topic 5.2. The precautionary principle  The Intergovernmental Panel on Climate Change (IPCC) Created in 1988 Find out.
Unit 5 Seminar Carbon dioxide. The Carbon Cycle Carbon comes into the living world through the plants, algae, and bacteria that take in atmospheric carbon.
Warm Up: 2-21 What are the impacts of climate change on humans?
Carbon Cycle Jeopardy Water Rocks!. Carbon Sources Effects of Climate Change Greenhouse Gases $100 $500 $400 $500 $400 $300 $200 $100 $500 $300 $200 $100.
Green house gasses Sultan althani 7E. Carbon dioxide Carbon dioxide is a colorless, neutral gas produced by burning carbon and organic mix and by respiration.
AIM: What is Global Warming?
NOTES 20 – The Carbon Cycle, The Greenhouse Effect, and Global Warming.
Global Warming: The Disaster
Greenhouse Effect and Precautionary Principle Arctic Ecosystems Objective 5.2.
There are gases in our Earth’s atmosphere which can trap heat toward the Earth’s surface. This is called the greenhouse effect. The greenhouse effect.
Chapter 19 Global Change 1. o Global change- any chemical, biological or physical property change of the planet. o Global climate change- changes in the.
ATMOSPHERIC HEATING THE GREENHOUSE EFFECT SPI Analyze data to identify events associated with heat convection in the atmosphere. TN Standard GLE.
Global Warming Done By: Chong Chee Yuan 2P403. Agenda  What is Global Warming?  Causes of Global Warming  Effects of Global Warming  What can be done.
AIM: What is Global Warming? DN: Fill in the following chart: ProblemDefinitionCauseEffect Acid Rain Ozone Depletion.
Global Warming by Alex Kiss. Natural Warmth The Earth’s surface is heated primarily by sunlight The Earth’s surface is heated primarily by sunlight It.
Carbon Cycle. What is the Carbon Cycle? In the carbon cycle, carbon is transferred from inside the Earth to the atmosphere, oceans, crust, and to living.
4.4: Climate change. Changes in Carbon Dioxide in our Atmosphere in the last 100+ years. Why has carbon dioxide increased? Carbon Dioxide Levels (ppm)
Global Issues Biology CH 6.
The Greenhouse Effect IB Topic 5.2. The greenhouse effect is natural … It’s just intensifying due to human activity and pollution Causing the overall.
Greenhouse Effect (E 3 ) Pages ) Definitions 2) Description 3) Greenhouse Gases 4) Greenhouse Gases Effect on Atmosphere.
Topic 4.3 and 4.4 Carbon Cycling and Climate Change.
Global Warming & The Green house effect What is it? What causes it? What are the effects? to-see-to-convince-you-that-climate-change-is-
The Greenhouse Effect & Global Warming. The Greenhouse Effect The Earth’s average temperature is increasing.
Chapter 35 Essential Question: How might global warming affect the environment in the world’s coldest places? Antarctica: Researching Global Warming at.
Factors affecting climate. The tilting and rotating of the Earth on its own axis The revolution of Earth around the Sun The more concentrated the sunlight,
Olivia MacDonald’s PRESIDENTIAL CAMPAIGN. WHAT IS GLOBEL WARMING?  Global warming is an increase in the earth's average atmospheric temperature that.
The Enhanced Greenhouse Effect
Chapter 29 How Do Ecosystems Work?.
GLOBAL WARMING THE GREEN HOUSE EFFECT. Presented by- AND
Greenhouse the effect.
Air Pollution,Climate Change,and Global Warming
NEED TO LEARN.
The Greenhouse Effect IB Topic 5.2.
The greenhouse effect Topic 5.2.
Climate and Change.
DO NOW.
Green House Effect & Global Warming
NOTES 36 – The Carbon Cycle, The Greenhouse Effect, and Global Warming
Presentation transcript:

THE GREENHOUSE EFFECT Stephanie Seto

The Carbon Cycle

Changes in Atmospheric Carbon Dioxide Level  Since the Industrial Revolution (1800’s), humans have increased quantities of carbon dioxide from factories, transportation, fossil fuels (coal and oil), and burning forests to make way for farmland.  Human pollution has produced enough carbon dioxide to raise its percentage in the planet’s atmosphere.  Estimated over 25% increase since pre-industrial revolution

 Plants, phytoplankton, and photosynthetic bacteria are generally more active in the summer, during which more carbon dioxide is removed from the atmosphere.  NASA graph shows in 47 year time period, there has been a 19.4% increase in the mean annual concentration of carbon dioxide

The Enhanced Greenhouse Effect  There is already a natural greenhouse effect that occurs, but human pollution intensifies this, causing the overall temperature to increase; otherwise known as global warming.  How a greenhouse works: Sunlight enters through glass, reaches plants and becomes heat, heat is trapped.

The Enhanced Greenhouse Effect (Continued)  1. Sunlight enters atmosphere because gases of atmosphere are transparent to light.  2. Light energy is converted into heat energy and warms the Earth. Most of this heat radiates back into the atmosphere.  3. Greenhouse gases retain some heat and trap it in the atmosphere.  4. Earth’s natural greenhouse effect is that the atmosphere is warmer than outer space.

Greenhouse Gases  Carbon dioxide, methane, and oxides of nitrogen  Human production of greenhouse gases is increasing  Human activities that produce oxides of nitrogen: - burning fossil fuels (gasoline in cars) and using catalytic converters for their exhaust systems - The use of organic and commercial fertilizers to improve the growing of crops. - Industrial processes (production of nitric acid)

Greenhouse Gases (continued)  Methane has flammable properties which are useful for cooking and heating  Human activities that produce methane (CH 4 ): - Cows and bulls produce methane in their digestive processes. - Waste disposal in landfills (organic wastes like uneaten food decompose and release methane) - Production and distribution of natural gas (when made for use in homes, leaks in containers release methane into the air)

Impacts of Global Warming  Human activity intensifies Earth’s natural greenhouse gases to a point where it can be thrown off balance  This could potentially cause: - Increase in photosynthetic rates - Change in climate with varying effects on ecosystems - Extinction of certain species - Melting of glaciers - Rise in sea level leading to flooding in costal areas

The Precautionary Principle  In 1988, The Intergovernmental Panel on Climate Change (IPCC) set out to find if human activities have an impact on climate.  Conclusions: - Global temperatures are increasing; global warming is confirmed. - There is over a 90% chance that the cause is the production of greenhouse gases by human activity. The chance that it is caused by natural phenomena is less than 5%. - Sea levels are expected to rise between 18cm and 59cm. - Increased likelihood of severe weather (heat waves, drought, heavy rains, etc.) The research does not indicate whether this will have an effect on ecosystems or how severe the consequences may be.

The Precautionary Principle (continued)  The precautionary principle is an “ethical theory” that action should be taken to prevent harm to the environment, even if there is not sufficient evidence that the activity will have severe negative consequences.  If people want to engage in any potentially harmful activity, they must first find evidence that it will not cause harm.  Without this, industries and consumers tend to proceed until it is clear that harm is being done to the environment.

Evaluation of the precautionary principle  Farmers, manufacturers, and transportation providers wonder why they should invest in using new and expensive techniques to reduce greenhouse gases if there is not sufficient evidence of harmful consequences. Industries that do invest make themselves less economically viable than their competitors.  Unless all companies take preventive action, there will always be polluting competitors that will offer products at a lower price, thus driving the eco-friendly companies out of business.  Well-informed customers are more likely to choose eco- friendly companies, which, if done on a larger scale, would drive companies that are not eco-friendly out of business.

Evaluation of the precautionary principle (continued)  Scientists say that money invested in taking preventive action is not wasted; it is better to stop the problem in its tracks than to try and fix it.  However, there is an ethical dilemma: many of those who suffer the global warming consequences are not the ones creating and contributing to the problem. This also includes the organisms in the biosphere which are negatively affected by human activity.

Human Impact on Arctic Ecosystems  The Arctic includes: the arctic ocean, parts of North America, Greenland, Iceland, Norway, and Russia which are north of the arctic circle.  Changes in ecosystems: - more ice is melting every year - Less snow and more frozen rain in winter - Regions that never had them before are populated with mosquitoes - Certain woody shrubs are growing on warmer soils where there used to be moss and lichens on tundra - Bird species, such as robins, have migrated to areas where they are so foreign to the local people that they have no name for them in their language.

Human Impact on Arctic Ecosystems  A consequence of global warming on the Arctic is that it is changing the ecosystems. For instance, ice has the capacity to support algae on its underside. The surface area allows for the algae to attach and the transparency of ice allows sunlight to pass through, making photosynthesis possible. Since algae are important in Arctic ecosystems, any decrease in their population would cause harm to the rest of the food web.  Polar bears rely on seals for hunting. Their way of hunting is by standing on ice near a hole so they can catch the seal when it comes out. The melting of ice makes this more difficult, as seals have more open places for air.  As temperatures rise, habitats of organisms extend northwards. With new species arriving, it is likely that more pathogens will come about.