Turn in your homework on sustainable practices NOW. Unit 2: Energy Conservation and Transfer Focus: Energy Presentations Day 6: 10/23/17 Turn in your homework on sustainable practices NOW. Science Starter: 2 parts A.COPY AND BALANCE this equation: HBr + Mg(OH)2 MgBr2 + H2O B. Copy and answer: Why must chemical equations be balanced? No atoms are gained or lost in a chemical reaction; they just get rearranged to form new substances with different properties (matter cannot be created or destroyed; it can change form, though.)

Plan for the Day Mini-lesson- Brainpop on wind energy Begin presentations-completing chart Discussion and examples of Law of Conservation of Energy

Homework 1.Textbook/workbook pages 126-137 due Thursday. I will give 5 points extra credit if you finish it by Wednesday. 2. Energy Unit Test Tuesday, Oct. 31st

Essential Question – What are the environmental consequences of obtaining, transforming, and distributing energy resources?

Let’s see what Brainpop has to say about wind energy. Brainpop Wind Energy

Some people have found other uses for wind turbines Some people have found other uses for wind turbines. A drone caught this man up on a wind turbine. Hopefully, he was just checking the weather equipment or maybe he was tanning, or maybe the wife was nagging or had given him a “honey-do” list Anyway, don’t try this at home or at your nearest wind turbine, It’s a long way down!

Presentations - Let’s start with our “Fossil Fuels” group Presentations - Let’s start with our “Fossil Fuels” group. A few things: 1. Keep your presentation short and to the point (concise). 2. DO NOT read directly from the slide. 3. Give your classmates time to write information on their charts.

IT TAKES ENERGY TO MAKE ENERGY…WHAT DOES THIS MEAN IT TAKES ENERGY TO MAKE ENERGY…WHAT DOES THIS MEAN? DISCUSS AND BE READY TO SHARE YOUR THOUGHTS.

Based on your knowledge of the Law of Conservation of Matter/Mass, what do you suppose the Law of Conservation of Energy says? Law of Conservation of Energy – Def – Energy cannot be ____________ or __________, but can __________________. Ex. In a photovoltaic cell, _________ energy changes directly into ___________ energy (electricity) Ex. ______________ energy in coal changes into light energy and ______________ (heat) energy when you burn it. created destroyed change solar electrical Chemical thermal

Using coal as an example, let’s look at a flow map of energy transformation to show us that IT TAKES ENERGY TO MAKE ENERGY!!!! You use fossil fuels to transport fossil fuels What type of energy is in coal before it’s burned? 1. Mining – mechanical energy is used to mine it 2. Transporting – mechanical/ chemical energy. What else? 3.Burning it – chemical energy is changed into light and thermal energy which is used to: 6. Operate a generator- mechanical is changed into electrical energy which is used to: ???? 5.Turn a turbine – mechanical energy is then used to: 4. Heat water into steam-thermal energy is changed into kinetic/ mechanical energy, which is used to:.

Next group – Nuclear then solar

Wrap-up What is the most important thing you learned today? Why is this important to you and your world? Be prepared to share.