ENERGY http://www.wpcsd.k12.ny.us/cms/lib5/NY01000029/Centricity/Domain/789/1%20Energy.pptx

List 3 things you used today that has or will use energy. Do NOW In your journal: List 3 things you used today that has or will use energy.

a FORCE is… WORK is… ENERGY is… when a FORCE moves an object the ability to do WORK or cause change Name any 2 things that ARE energy or that HAVE energy WORK is… Write the definitions of energy, work and force. Name 2 things that are energy or that have energy. when a FORCE moves an object a FORCE is… a push or a pull

Energy that is NOT being used Energy that IS being used There are two main kinds of energy… POTENTIAL ENERGY KINETIC ENERGY STORED energy or Energy that is NOT being used Energy that IS being used or Energy in MOTION Examples: Examples: Write the defintions and title Two Main Kinds of Energy: *Potential and Kinetic. Write two examples of each.

Demonstrate POTENTIAL ENERGY using the ball on your table AND draw a picture showing what potential energy looks like. Following the instructions on the screen. Remember to draw the picture and describe what the potential and kinetic energy looks like. Now, use the same ball to demonstrate KINETIC ENERGY. Again, draw a picture to show what kinetic energy looks like.

Write a “P” or a “K” under each picture on your paper to tell whether the pictures are showing POTENTIAL or KINETIC energy. zzzz Label your papers with the name of each picture and P (Potential) and K (Kinetic) energy

Elastic Potential Energy Elastic potential energy is associated with objects that can be stretched or compressed. Elastic potential energy can be stored in rubber bands, bungee chords, trampolines, springs, an arrow drawn into a bow, etc. Write the definition and examples of where elastic potential energy can be stored:

Gravitational Potential Energy Gravitational Energy is the energy of position or place. A rock resting at the top of a hill contains gravitational potential energy. Hydropower, such as water in a reservoir behind a dam, is an example of gravitational potential energy. Write the defintion of Gravitational Energy and examples

Do Now: Write in your journal the number and label either (P) Potential energy or (K) Kinetic energy: 1. 2. 3. 4. 6. 5. Follow the directions on the screen. Write the number, what the picture represents and whether it is Potential or Kinetic Energy

6 DIFFERENT FORMS OF ENERGY Both potential & kinetic energy come in many forms. Six of the most common ones are: MECHANICAL ENERGY Energy of moving parts THERMAL (HEAT) ENERGY Energy of the heat IN an object Write down the Title 6 Different Forms of Energy. Under the title, write #1, Mechanical Energy (then write definition). #2 Thermal (Heat) Energy (definition) and so on. CHEMICAL ENERGY Energy in chemical bonds of food, gas, batteries, burning wood etc.

6 DIFFERENT FORMS OF ENERGY (continued) ELECTRICAL ENERGY Moving electrical charges ELECTROMAGNETIC ENERGY Light energy, X-rays, radio waves NUCLEAR ENERGY Stored in the nucleus of an atom & released when atoms are split or joined together, nuclear reactors, atomic bombs, stars, sun Complete note-taking of 6 different forms of energy.

Do Now: Write in your journal the form of energy each object has. a. electrical energy b. chemical energy c. mechanical energy d. nuclear energy e. electromagnetic energy f. heat energy. 1. 2. Follow the directions on the screen. 3. 4. (Nuclear power plant )

Energy Transformations Conversions Between Forms of Energy A change from one form of energy to another is called energy conversion. Most forms of energy can be converted into any other form. For example a toaster converts electrical energy to thermal energy. Your body converts chemical energy in the food you eat into the mechanical energy you need to move your muscles. Usually heat energy is also formed in an energy conversion. Take notes on the slide. Electrical Energy into Thermal Energy Chemical Energy into Mechanical Energy

ENERGY CONVERSIONS (ENERGY TRANSFORMATIONS) Energy can be converted (transformed or changed) from one form to another. For example… 1) Food has POTENTIAL CHEMICAL energy. 2) When you eat it, the bonds in the atoms are broken and the energy is released to your cells. Your body CHANGES the chemical energy to KINETIC MECHANICAL ENERGY when you run, jump, write, walk. 4) Finally, your body creates THERMAL (HEAT) ENERGY you can feel because the molecules inside you are moving! Take notes on the slide. Remember to put headings, underline and # examples.

Think about the energy conversions taking place with a flashlight. Use the flow chart in your notes to show each form of energy that occurs. Light & Heat Batteries Copy flow chart in your notes with Heading _Energy Conversions in a flashlight. Wires CHEMICAL ENERGY ELECTRICAL ENERGY ELECTROMAGNETIC ENERGY

Label the ENERGY CONVERSIONS in your notes. ELECTRIC PENCIL SHARPENER GEARS & BLADES WIRES mechanical energy electrical energy Copy Heading: Energy Conversions in an electric pencil sharpener. Copy flow chart.

HEATING PAD WIRES HEAT electrical energy thermal energy Copy flow chart: Heading: Energy Conversion in a Heating Pad:

Energy Conversion in a Waterfall The water at the top of the falls has gravitational potential energy because it is higher than at the bottom. As the water falls, its height decreases, and loses its potential energy. At the same time, its kinetic energy increases because its velocity (speed) increases. The potential energy is converted into kinetic energy. Gravitational Potential Energy Kinetic Energy Copy Chart Energy Conversion in a Waterfall

Energy Conversion in a Pendulum A continuous conversion between kinetic and potential energy takes place in a pendulum. At the highest point in its swing, the pendulum has only potential energy. As it starts to swing downward, it speeds up and its potential energy changes to kinetic energy Potential Energy Copy Chart Energy Conversion in a Pendulum

PLANT PHOTOSYNTHESIS electromagnetic energy chemical energy SUN Plant changes sunlight and water into sugar (food) for plant! electromagnetic energy chemical energy Copy chart.

Law of Conservation of Energy When one form of energy is converted to another, no energy is destroyed in the process. Energy cannot be created or destroyed, so the total amount of energy is the same before and after any process. All energy is accounted for. Conserving Energy When you hear or read about conserving energy, don’t get confused with the law of conservation of energy. Conserving energy means saving energy, or not wasting it! In Science, energy is always conserved because its total quantity does not change. Write definition of Law of Conservation of Energy: Write example of Conserving Energy Write last sentence. In Science….. http://tonto.eia.doe.gov/kids/energy.cfm?page=about_home-basics

DO NOW With your elbow buddy: Take the index card from the tub. Keeping the fold up, use two hands to pull the ends out to flatten out the card. Predict what will happen to the card as you let go. Test and then explain your prediction. Use the terms potential and kinetic energy. Complete activity. You will have to construct the object represented. Take notes from this slide, construct the object, follow the instructions. Test. Then explain using terms potential and kinetic energy.

Draw and explain where you see, Potential energy, kinetic energy and label anywhere there is a change.

There are two TYPES of energy: potential and kinetic. Review: There are two TYPES of energy: potential and kinetic. Energy can’t be created or destroyed so we need to convert energy we have into what we need. The energy we use comes from many sources: Fossil fuel (coal, oil, natural gas), nuclear power, sun, wind, geothermal, hydropower. Most of this we convert into electricity (electrical energy). There are 6 forms of energy: mechanical, chemical, nuclear, electromagnetic, thermal, electrical . Energy can change from one form into another but is not created or destroyed. Write Review

How many people does it take to turn on a light bulb? Do Now: How many people does it take to turn on a light bulb? Where do we get our energy from? How is electricity “made”? Answer questions as best you can.

Do Now: Describe what is happening in each panel of the cartoon. Follow the directions on the screen and answer in your journal. Describe what is happening in each panel of the cartoon.

Energy conversions from fossil fuel. electricity school house rock Where do we get electricity? List the 6 types of energy conversion from the following slides. (Names only) Energy conversions from fossil fuel. List only the 6 types of energy conversion from fossil fuels. Names and picture only. real life power plant http://www.youtube.com/watch?v=20Vb6hlLQSg

Electricity from Nuclear energy

Electricity from hydropower

Electricity from Wind energy

Electricity from geothermal

Electricity from the sun