Bell Work (February 11, 2013)  What do you think is the difference between Energy and Power????

Bell Work (February 12, 2013)  Energy that is stored within an object is called ________________ energy.  A. Thermal  B. Kinetic  C. Mechanical  D. Potential

Bell Work (February 13, 2013)  Fission and Fusion are examples of _________________ energy.  A. Electrical Energy  B. Thermal Energy  C. Nuclear Energy  D. Chemical Energy

Bell Work (February 14, 2013)  Which is an example of electrical energy?  A. SantaB. a computer  C. a treeD. your planner  After you finish, please define and draw a picture of the following words in your Science Notebook (pgs 90-91): Energy, potential energy, kinetic energy, Chemical Potential Energy, Elastic Potential Energy, Gravitational Potential Energy, and Mechanical Energy

Bell Work (February 21, 2013)  What type of energy is usually called light energy, but TV and radio waves are also common examples. Sunlight is often a source of this energy.  A. thermal  B. radiant  C. nuclear  D. chemical

Bell Work (February 22, 2013) Which energy conversion occurs when a battery operated alarm clock goes off?  A. light-energy to electrical energy to sound energy  B. potential energy to kinetic energy to potential energy  C. electrical energy to chemical energy to sound energy  D. chemical energy to electrical energy to sound energy

ENERGY Mrs. Lassiter 6 th Grade Science

 Standards we are working on mastering while learning about ENERGY!  10.1 Distinguish among gravitational potential energy, elastic potential energy, and chemical potential energy.  10.2 Interpret the relationship between potential and kinetic energy.  10.3 Recognize that energy can be transformed from one type to another.  10.4 Explain the Law of Conservation of Energy using data from a variety of energy transformations.  Our Objectives for today:  Explain the relationship between energy and work.  Compare kinetic energy and potential energy.  Describe the different forms of energy.  Our Science Vocabulary Words for the Day  EnergyKinetic EnergyPotential Energy  Elastic Potential EnergyGravitational Potential Energy  Chemical Potential EnergyMechanical Energy Our Class Objectives Today

Energy and Work: Working Together  Energy is the ability to do work. It is the ability to cause a change. It could change temperature, speed, position, shape, or direction of an object.  Work is done when a force causes an object to move in the direction of the force. Work is a transfer of energy.  Energy and work are expressed in units of joules (J).

Objective: Compare kinetic energy and potential energy. Kinetic Energy Kinetic energy is the energy of motion. All moving objects have kinetic energy. Kinetic Energy Depends on Mass and Speed If you know an object’s mass (m) and its speed (v), you can calculate the object’s kinetic energy with the following equation:

Objective: Compare kinetic energy and potential energy. Kinetic Energy

Objective: Compare kinetic energy and potential energy. Describe the different forms of energy. Potential Energy Potential energy is the energy an object has because of its position. Elastic potential energy can be stored in objects like bowstrings, springs, and rubber bands. The energy put into stretching becomes elastic potential energy. The amount of gravitational potential energy that an object has depends on its weight and its height.

Objective: Compare kinetic energy and potential energy. Partner Up  With your partners help, Organize the Potential and Kinetic Energy page. After you believe it is correct, please raise your hand for me to look at. After it is organized correctly, glue them correctly and put on page 92.

Objective: Compare kinetic energy and potential energy. Describe the different forms of energy. Gravitational Potential Energy The equation to find gravitational potential energy is: gravitational potential energy = weight x height Gravitational potential energy is equal to the amount of work done on an object to lift it a certain height. Painter Website

Objective: Compare kinetic energy and potential energy. Describe the different forms of energy. Chemical Potential Energy Chemical Energy is the energy of a chemical compound that changes as its atoms are rearranged. Chemical energy is a form of potential energy because it depends on the position and arrangement of the atoms in a compound. The energy in food is chemical energy.

Objective: Compare kinetic energy and potential energy. Describe the different forms of energy. Mechanical Energy Mechanical energy is the total energy of motion and position of an object. Both kinetic energy and potential energy are kinds of mechanical energy. The equation to find mechanical energy is: mechanical energy = potential energy + kinetic energy Roller Coaster Website

Objective: Compare kinetic energy and potential energy. Describe the different forms of energy. Other Forms of Energy Thermal Energy is all of the kinetic energy due to random motion of the particles that make up an object. All matter is made up of particles that are always in random motion. So, all matter has thermal energy. Thermal energy increases as temperature increases and increases as the number of particles increases.

Other Forms of Energy Electrical Energy is the energy of moving electrons. Electrical energy can be thought of as potential energy that is used when you plug in an electrical appliance and use it. Sound Energy is caused by an object’s vibrations. The object’s vibrations transmit some kinetic energy to the air particles, which also vibrate. These vibrations transmit sound energy. Light Energy is produced by the vibrations of electrically charged particles (IONS). Nuclear Energy is energy that comes from changes in the nucleus of an atom. Nuclear energy can be produced when nuclei are joined in a fusion reaction or when a nucleus is split apart in a fission reaction.

Bell Work (February 25, 2013)  A glow stick contains a form of potential energy until you bend it. What energy conversion happens when you bend the glow stick?  A. Chemical energy is converted to heat.  B. Light energy is converted to chemical energy  C. Light energy is converted to heat  D. Chemical energy is converted to light energy

Bell Work (February 26, 2013)  A gasoline engine only converts about 15% of the chemical energy of gasoline into mechanical energy. What other energy transformation is taking place in the gasoline?  A. chemical to thermal  B. nuclear to chemical  C. electrical to thermal  D. mechanical to nuclear

Bell Work (February 27, 2013)  What energy conversion occurs when a toaster is IN USE?  A. electrical energy into heat and light  B. chemical energy into gravitational energy  C. Electrical energy into chemical energy  D. chemical energy into heat and light  Please glue in Energy Resources/Renewable Energy page in Science Notebook on pg 97

Bell Work (February 28, 2013)  Name and describe 2 major uses for coal….  Please glue in concept map (page 99) and 3 Energy Conversion examples (page 98) in your Science Notebook.

Bell Work (March 1, 2013) Which of the following is a feature of a car to make it be more efficient?  A. Closed System  B. Friction  C. GeoThermal Energy  D. aerodynamic shape  After you finish bell work, please study notes for test.

Energy Conversions Mrs. Lassiter 6 th grade Science

 Standards we are working on mastering while learning about ENERGY!  10.1 Distinguish among gravitational potential energy, elastic potential energy, and chemical potential energy.  10.2 Interpret the relationship between potential and kinetic energy.  10.3 Recognize that energy can be transformed from one type to another.  10.4 Explain the Law of Conservation of Energy using data from a variety of energy transformations.  Our Objectives for today:  Describe an energy conversion.  Give examples of energy conversions for the different forms of energy.  Explain how energy conversions make energy useful.  Explain the role of machines in energy conversions.  Our Science Vocabulary Words for the Day  Potential Energy  Kinetic Energy  Mechanical Energy  Chemical Energy  ENERGY CONVERSION Our Class Objectives Today

Objective: Describe an energy conversion. Kinetic and Potential Energy  An energy conversion is a change from one form of energy to another. Any form of energy can change into any other form of energy.  For example: As the skateboarder travels up and down the half-pipe, his energy changes back and forth between kinetic energy and gravitational potential energy.

Objective: Give examples of energy conversions for the different forms of energy. Conversions involving Chemical (Potential) Energy  Chemical energy is stored in the food you eat. Your body uses this chemical energy to function.  The chemical energy in the food you eat comes from the sun’s energy. Plants use photosynthesis to convert light energy into chemical energy.  The chemical energy in the food you eat is changed into another kind of chemical energy that your body can use. Your body then uses that energy to give you kinetic energy that you use in everything you do.

Objective: Explain how energy conversions make energy useful. Why are Energy Conversions SOOOO Important!!!!!  Energy conversions are needed for everything we do. Heating our homes, getting energy from a meal, and many other things use energy conversions.  Machines, such as a hair dryer, help convert energy and make that energy work for you.  Some common energy conversions that involve electrical energy are shown in the table.

Partner up  Partner A – Pick an object that you used this weekend and explain what energy conversions occurred while using that object.  Partner B - Pick an object that you used this weekend and explain what energy conversions occurred while using that object.  After you each share, discuss if each of you were correct in the energy conversions of the objects.

Objective: Explain the role of machines in energy conversions. Energy and Machines  A machine can make work easier by changing the size or direction (or both) of the force needed to do the work. Some machines allow you to use less force over a greater distance to do the same amount of work. Machines help you use energy by converting into the form that you need. For Example: A Bicycle

Exit Ticket  What energy conversions happen if you ride a bike. Write answer on sticky note and when class is over, please place on the stoplight. Please place your answer on the correct way you feel about Energy Conversions.  Red – Need More Help  Yellow – Getting it, but still have a few questions.  Green – Yes I Can! - You feel very confident you understand Energy Conversions.

Conservation of Energy Mrs. Lassiter 6 th grade Science

 Standards we are working on mastering while learning about ENERGY!  10.1 Distinguish among gravitational potential energy, elastic potential energy, and chemical potential energy.  10.2 Interpret the relationship between potential and kinetic energy.  10.3 Recognize that energy can be transformed from one type to another.  10.4 Explain the Law of Conservation of Energy using data from a variety of energy transformations.  Our Objectives for today:  Explain how energy is conserved within a closed system.  Explain the law of conservation of energy.  Give examples of how thermal energy is always a result of energy conversion.  Explain why perpetual motion is impossible.  Our Science Vocabulary Words for the Day  ENERGY CONVERSION  Friction  LAW OF CONSERVATION OF ENERGY Our Class Objectives Today

Objective: Explain the law of conservation of energy. Law of Conservation of Energy The Law of Conservation of Energy states that energy cannot be created or destroyed. Energy can be converted from one form to another. But all of the different forms of energy in a system always add up to the same total amount of energy.

Objective: Explain how energy is conserved within a closed system. Where Does the Energy Go? Friction is a force that opposes motion between two surfaces that are touching. Even air causes friction. Friction creates heat. A Closed System is a group of objects that transfer energy only to each other. For example: a roller coaster. For a roller coaster car to move, energy must be used to overcome the friction between the car’s wheels and the track. As a result, not all of the car’s potential energy changes into kinetic energy and not all of the car’s kinetic energy changes back into potential energy.

Objective: Explain how energy is conserved within a closed system. Energy in a closed system Let’s Watch our roller coaster again, this time watch how the kinetic and potential energy levels work. The image below shows energy conservation in a light bulb.

Objectives: Give examples of how thermal energy is always a result of energy conversion. Explain why perpetual motion is impossible. No Conversion without Thermal Energy Any time one form of energy is converted into another form, some of the original energy always gets converted into thermal energy. The thermal energy due to friction that results from energy conversions is not usually useful energy. A Perpetual Machine is a machine that would run forever without any additional energy. Many Scientists have attempted to come up with this type of machine, but have not succeeded because wasted thermal energy always results from energy conversions.

Objective: Give examples of how thermal energy is always a result of energy conversion. No Conversion without Thermal Energy Scientists and Engineers have developed some systems that transform energy with less loss of heat than others do. Such systems are more efficient than others are. Improving the efficiency of machines is important because greater efficiency results in less waste. If less energy is wasted, less energy is needed to operate a machine.

Energy Resources Mrs. Lassiter 6 th grade Science

 Standards we are working on mastering while learning about ENERGY!  10.1 Distinguish among gravitational potential energy, elastic potential energy, and chemical potential energy.  10.2 Interpret the relationship between potential and kinetic energy.  10.3 Recognize that energy can be transformed from one type to another.  10.4 Explain the Law of Conservation of Energy using data from a variety of energy transformations.  Our Objectives for today:  Name several energy resources.  Explain how the sun is the source of most energy on Earth.  Evaluate the advantages and disadvantages of using various energy resources.  Our Science Vocabulary Words for the Day  Law of Conservation of Energy  Nonrenewable resource  Renewable Resource  Fossil Fuel Our Class Objectives Today

Partner Up Think about the web quest we completed Tuesday and Wednesday.  Partner A – Name two renewable resources and describe how they are converted in to energy for us to use.  Partner B – Name two nonrenewable resources and describe how they are converted in to energy for us to use.

Objective: Name several energy resources. Nonrenewable Resources Nonrenewable resources cannot be replaced, or are replaced much more slowly, than they are used. Fossil fuels are nonrenewable energy resources that formed from the remains of organisms that lived long ago. Oil, natural gas, and coal are the most common fossil fuels. All fossil fuels contain stored energy from the sun, which can be converted into other kinds of energy. Burning coal is a common way to generate electrical energy. Petroleum is used to make gasoline, wax, and plastics. Natural gas is often used in home heating.

Objective: Name several energy resources. Nonrenewable Resources Video of Coal Fired Power Plants

Objective: Name several energy resources. Nonrenewable Resources Another way to generate electrical energy is to use nuclear energy. In a process called nuclear fission, the nucleus of a radioactive atom is split into two smaller nuclei, which releases nuclear energy. Because the supply of radioactive elements is limited, nuclear energy is a nonrenewable resource.

Objective: Name several energy resources. Explain how the sun is the source of most energy on Earth. Renewable Resources Renewable resources are naturally replaced more quickly than they are used. Sunlight can be changed into electrical energy through solar cells. (Solar Energy) When rays of sunshine strike a solar panel, they give some of the electrons inside it more energy, a process that creates an electrical current. Solar cells can be used in devices such as calculators. They can also be placed on the roof of a house to provide electrical energy.

Objective: Name several energy resources. Explain how the sun is the source of most energy on Earth. Renewable Resources The potential energy of water in a reservoir can be changed into kinetic energy as the water flows through a dam. In a hydroelectric dam, falling water turns turbines. The turbines are connected to a generator that changes kinetic energy into electrical energy. Video of Hydroelectric dam:

Objective: Name several energy resources. Explain how the sun is the source of most energy on Earth. Renewable Resources The kinetic energy of wind can turn the blades of a windmill or a wind turbine. A wind turbine changes the kinetic energy of the air into electrical energy by turning a generator. Video of wind turbine: &list=PL677ED92ED279EEF7&index=74 &list=PL677ED92ED279EEF7&index=74

Objective: Name several energy resources. Explain how the sun is the source of most energy on Earth. Renewable Resources Geothermal Energy is thermal energy caused by the heating of Earth’s crust. This energy can be converted into electrical energy at geothermal power plants. Biomass is organic matter, such as plants, wood, and waste, that can be burned to release energy. Some countries depend on biomass for energy.

Pair Up  Please discuss with your partner which energy source you believe is the best for our environment. Also discuss how we could make adjustments in our daily life so enough energy is provided for our daily routines.

Objective: Name several energy resources. Explain how the sun is the source of most energy on Earth. Two sides to Energy Resources All energy resources have advantages and disadvantages. Many factors determine when one energy source is a better choice than another. Energy planning in all parts of the world requires careful consideration of energy needs and the availability and responsible use of resources.

Energy Concept Map Use the following words to complete energy concept map on page 99 in your Science Notebook: potential energykinetic energy positionmass mechanical energymachines motion

Bell Work (March 4, 2013) When Coal is burned to produce electricity, which energy conversion happens when steam cause turbines to move? A.Kinetic energy to thermal energy B.Electrical energy to kinetic energy C.Thermal energy to chemical energy D.Thermal energy to kinetic energy

Bell Work (March 5, 2013) Which of the following best explains why the sun and moon look like they are the same size during a solar eclipse? A.The sun travels closer to Earth than the moon because of its elliptical orbit. B.The moon is larger than the sun but looks the same size because it is slightly closer. C.The sun has a greater gravitational attraction than the moon because it is larger D.The moon is smaller than the sun but looks to be the same size because it is much closer.

Bell Work (March 6, 2013) Explain what friction is and what is “released” from friction.

Bell Work (March 8, 2013) Name 3 Renewable Resources and 3 nonrenewable resources.

 Standards we are working on mastering while learning about ENERGY!  10.1 Distinguish among gravitational potential energy, elastic potential energy, and chemical potential energy.  10.2 Interpret the relationship between potential and kinetic energy.  10.3 Recognize that energy can be transformed from one type to another.  10.4 Explain the Law of Conservation of Energy using data from a variety of energy transformations.  Vocabulary  Kinetic EnergyPotential EnergyGravitational Potential Energy  Renewable ResourceNonrenewable ResourceEnergy Conversion  Our Objectives for today: We are reviewing the following.  Compare kinetic energy and potential energy  Give examples of energy conversions for the different forms of energy.  Evaluate the advantages and disadvantages of using various energy resources. Our Class Objectives Today

Objective: Compare kinetic energy and potential energy. Pair Up  Complete Kinetic vs Potential Energy Page together. Help each other out and take turns completing.

 Let’s see how y’all did! Objective: Compare kinetic energy and potential energy. Pair Up

MATH TIME!!!!!!  Let’s Do SOME MATH!!!!!!! Who can complete the problem on page 373 (number 15) the fastest and get it correct?!?!?!?

Objective: Give examples of energy conversions for the different forms of energy. Group Work  On page 98 of your Science Notebooks, you and your partners will discuss and decide where the greatest potential and kinetic energy will be exerted on each picture. Write a sentence for each describing what was decided.

Objective: Evaluate the advantages and disadvantages of using various energy resources. Pair Up  Please discuss with your partner which energy source you believe is the best for our environment. Also discuss how we could make adjustments in our daily life so enough energy is provided for our daily routines.

Energy Concept Map Use the following words to complete energy concept map on page 99 in your Science Notebook: potential energykinetic energy positionmass mechanical energymachines motion

Exit Ticket  Potential/Kinetic Mini Quiz. Please take the last 5 minutes to complete by yourself and turn into tray when you finish.