Unit 2: Energy Conservation and Transfer Day 1 Focus: energy introduction 10-16-17 On a sticky note, write down a word that comes to mind when you hear the word “energy”. Bring the sticky note up and place it on the dry-erase board.

Plan for the Day ***Begin Unit 2 Energy -Discussion -Notes -Video -Group activity

Homework “Resources and World Trade” reading passage and worksheet

Essential Question: page 1–COPY WHAT IS IN PARENTHESES: what are some implications (future consequences) of depleting (using up) our natural resources?

engage: Let’s look at the words you came up with when you hear the word “energy” and see if we can categorize them.

Energy is the ability to do work. There are different forms of energy: Kinetic Potential Mechanical Chemical Thermal Electrical Nuclear Gravitational Light/sound

In this unit, we will focus on natural resources that are used for making electricity (electrical energy)…or energy resources. Why do you think it is important to study about energy resources? Why do they matter in our everyday lives?

1. Energy resources Energy: any source of usable power/electricity. What are these sources? Fossil fuels Nuclear Solar Wind Water (Hydroelectric) Geothermal Biomass Hydrogen fuel cells

1. Energy resource Def. -any __________ of usable ________________/ __________________________. A.D. 1 –examples: ___________________ Fossil fuels Wind Geothermal Biomass ____________ fuel cells

There are 2 categories of natural/energy resources. Renewable Nonrenewable A natural resource that CANNOT be replaced at the same rate at which it is consumed. A natural resource that CAN be replaced at or near the same rate at which it is consumed.

Let’s see what prior knowledge you have about energy resources by sorting them. ../Unit 2 Energy 2016-2017 8th Science/renewable and nonrenewable energy sort.notebook

2. Renewable Def. -A natural resource that CAN BE REPLACED at about the same rate at which it is consumed. A.D. 1- Simply put…the Earth will NOT RUN OUT of it . but we still have to practice CONSERVATION with some of them. A.D. 2 – they are: 1. SOLAR 2. WATER/HYDROELECTRIC 3. WIND 4. BIOMASS 5. GEOTHERMAL 6. HYDROGEN FUEL CELLS

2. Renewable Def. -A natural resource that ______ ____ _________ at the same rate at which it is consumed (used). A.D. 1- Simply put…the Earth will ____ _____ _____ of it . but we still have to practice _______________________ with some of them. A.D. 2 – they are: 1. 2. 3. 4. 5. 6.

3. Nonrenewable Def. -A natural resource that CANNOT be replaced at the same rate at which it is consumed. A.D 1 - Simply put…once you use it, you lose it….for millions of years. SO, we must practice conservation. A.D. 2 - Modern societies are dependent on some of these and will have difficulty functioning without them. A.D. 3 – They are: 1. Coal, oil (petroleum), natural gas AKA Fossil Fuels 2. Uranium AKA Nuclear

3. Nonrenewable Def. -A natural resource that ____________ ____ ____________ at the same rate at which it is consumed. A.D 1 - Simply put…once you use it, you ______ ____….for millions of years. SO, we ________ practice conservation. A.D. 2 - Modern societies are _____________ on some of these and will have difficulty functioning without them. A.D. 3 – They are: 1. 2.

What energy sources do we Use in the U.S.? Predictions? What do you notice? What problems do you perceive? Let’s fill in your notes.

**Why should we be concerned about this?** 4. U.S. Energy Consumption A.D. 1 – Percentage of energy that comes from renewable resources?__________ Which do we use in the greatest amount? _____________ A.D. 2 - Percentage of energy that comes from nonrenewable resources? __________ Which do we use in the greatest amount? _____________ **Why should we be concerned about this?** ____________________________________________________________________________________________________ 10% hydroelectric 90% Petroleum/oil Nonrenewables, once depleted (used up), will be GONE! We are most dependent on them.

**Why should we be concerned about this?** 4. U.S. Energy Consumption A.D. 1 – Percentage of energy that comes from renewable resources?__________ Which do we use in the greatest amount? _____________ A.D. 2 - Percentage of energy that comes from nonrenewable resources? __________ Which do we use in the greatest amount? _____________ **Why should we be concerned about this?** ____________________________________________________________________________________________________

How has the human population changed? Why do you suppose developing (3rd world) countries have a faster population growth? At this rate, what will happen to the human population in the future? Think about this one! what do you think the quality of life will be for people who live on Earth 200 years from now? Supply and Demand?

What about north Carolina??? http://www.eia.gov/state/?sid=NC Let’s see what energy sources are used by us in Harrisburg, NC and the rest of the US!

What do you think about this cartoon?

North Korea's invisibility cloak is due to mandatory power cuts at night, part of the country's struggle to conserve its precious energy. the Soviet Union has limited N.K. access to inexpensive, Communist- approved fuel. Limited/no trade with other countries also limits their energy availability. They are almost self- sufficient in energy. Have Coal and Hydroelectric Import small amount of oil

Why are there no lights above India?

Where do you see a lot of electricity use? Why do these areas generate more electricity?

Why are we studying this unit? At the current rate we are using (consuming)energy, we won’t have enough resources to support our growing population of people! We are reaching our carrying capacity.

5. Carrying Capacity Defin. -The maximum number of organisms that can be supported by the resources of an environment. Organisms = humans The environment = Earth Ex. If your mom makes dinner for your family of five people, and you invite 3 friends over without asking her (so 8 people), you will have exceeded the carrying capacity for dinner. There would not be enough dinner for everyone to eat and be full.

More Realistically…. Our carrying capacity should increase as we …..improve technology and conservation efforts. But are we doing enough? As carrying capacity increases, what happens to human population? What does the carrying capacity appear to be doing to human population in this graph?

What happens to the population when the carrying capacity is exceeded? What happens to the carrying capacity?

5. Carrying Capacity (cont.) A.d.1 -Carrying capacity generally keeps the population in check. A.d.2 -If population exceeds (goes over) the carrying capacity, the population will decline rapidly, then slowly rebound/increase. A.d. 3 -If population exceeds carrying capacity, the carrying capacity will decline/decrease, then slowly rebound/increase.

5. Carrying Capacity Def. -The maximum number of _______________ that can be ________________ by the ________________ of an environment. A.D. 1-Carrying capacity generally keeps the population ____________________________________. A.D. 2 -If population exceeds (goes over) the carrying capacity, the population will ___________________________________________________________, then____________________________________________________________. A.D. 3 -If population exceeds carrying capacity, the carrying capacity will ____________________________________________________________, then____________________________________________________________.

Sounds great, right???? Everything will eventually straighten itself out, right???? What problem do you see?

Problems our future may hold if we don’t change what we do today: Resource depletion – using up our resources pollution, acid rain, deforestation Food shortages Increases in prices Poor water and air quality Poor Health Wars over resources (food, water, medicine, space) Climate change https://www.youtube.com/watch?v=grI3BDSGEC4 Extinction (plant, animal and possibly human)

If you were elected president of the United States…. What new laws would you put in place (no more than 3) to try and prevent energy problems we may face in the future? Work with your group Write down the laws AND tell why/how they will help.