What is ENERGY? Energy is the ability to do work or cause change

TYPES OF ENERGY Mechanical, Electromagnetic, Electrical, Chemical, Thermal, & Nuclear

What is Mechanical Energy? o Energy due to a object’s motion (kinetic) or position (potential). The bowling ball has mechanical energy. When the ball strikes the pins, mechanical energy is transferred to the pins!

Examples of Mechanical Energy

What is Electromagnetic Energy? o Light energy o Includes energy from gamma rays, xrays, ultraviolet rays, visible light, infrared rays, microwave and radio bands

What is Electrical Energy? o Energy caused by the movement of electrons o Easily transported through power lines and converted into other forms of energy

What is Chemical Energy? o Energy that is available for release from chemical reactions. The chemical bonds in a matchstick store energy that is transformed into thermal energy when the match is struck.

Examples of Chemical Energy

What is Thermal Energy? o Heat energy o The heat energy of an object determines how active its atoms are. A hot object is one whose atoms and molecules are excited and show rapid movement. A cooler object's molecules and atoms will show less movement.

What is Nuclear Energy? o Energy stored in the nuclei of atoms o Releasing this energy by splitting atoms is called FISSION oReleasing this energy when less massive nuclei merge to form a more massive nucleus is FUSION

Examples of Nuclear Energy

QUIZ TIME! Get out your remotes!!

What type of energy cooks food in a microwave oven? 1.Mechanical 2.Electromagnetic 3.Electrical 4.Chemical 5.Thermal 6.Nuclear Response Grid

The plate spinning in the microwave would have what type of energy? 1.Mechanical 2.Electromagnetic 3.Electrical 4.Chemical 5.Thermal 6.Nuclear Response Grid

Electrical energy is converted to what type of energy on this stove? 1.Mechanical 2.Electromagnetic 3.Electrical 4.Chemical 5.Thermal 6.Nuclear Response Grid

Plugging a fan into a power outlet transforms electrical energy into what type of energy? 1.Mechanical 2.Electromagnetic 3.Electrical 4.Chemical 5.Thermal 6.Nuclear Response Grid

Photosynthesis converts electromagnetic energy from the sun into what type of energy to nourish plants ? 1.Mechanical 2.Electromagnetic 3.Electrical 4.Chemical 5.Thermal 6.Nuclear Response Grid

Electrical energy is transformed into what type of energy when a lamp is turned on? 1.Mechanical 2.Electromagnetic 3.Electrical 4.Chemical 5.Thermal 6.Nuclear Response Grid

What are some energy transformations that occur while driving a car?

Energy Transfer Chemical Electrical Sound (mechanical) Light (Electromagnetic) Thermal Mechanical

TYPES OF ENERGY Get ready for the Most missed Paleontology Test Questions Complete the Transforming Energy Worksheet Get your Storyboards ready to go!!

ENERGY Research your assigned Source of Energy. Use the website provided or do a google search of advantages & disadvantages

Understanding Energy Ready your remote

Which of the following is NOT a form of energy? 1.Electrical 2.Mechanical 3.Density 4.Chemical

Radio waves make up which form of energy? 1.Electrical 2.Mechanical 3.Thermal 4.Electromagnetic

The wind blowing would be an example of which form of energy? 1.Electrical 2.Mechanical 3.Thermal 4.Chemical

Understanding Conservation of Energy

Law of Conservation of Energy Energy may not be created nor destroyed.

Law of Conservation of Energy Energy may not be created nor destroyed. The total energy in a closed system remains constant

Law of Conservation of Energy Initial Energy = Final Energy

Initial Energy = Final Energy (KE + PE) initial = (KE+PE) final

Initial Energy = Final Energy (KE + PE) initial = (KE+PE) final 2 J + 8 J = 7 J + ?

Initial Energy = Final Energy (KE + PE) initial = (KE+PE) final 2 J + 8 J = 7 J + 3 J

A ball is at a position with only 100 J of potential energy. After being dropped 50 feet, it still has 40 J of potential energy left. How much kinetic energy does it have? 1.0 J 2.40 J 3.50 J 4.60 J J

A car has 100 J of energy. After rolling 20 feet, it still has 70 J of energy left. How much energy was transformed into thermal energy in the form of friction. 1.0 J 2.20 J 3.30 J 4.70 J J

Einstein’s equation E=mc 2 is an exception to the Law of Conservation of Energy used only when dealing with which form of energy ? 1.Electricity 2.Mechanical 3.Thermal 4.Chemical 5.Nuclear

Understanding Energy 1.) Return your remote 2.) Pick up The Nature of Energy WS 3.) Complete both sides of The Nature of Energy WS 4.) Turn in your Energy Resource Presentation 5.)Complete the Energy Skate Park Simulation Paper

Understanding Energy Ready your remote

A ball is dropped from the top of a building where it has of potential energy of 60 J. When it hits the ground, how much kinetic energy does it have? 1.0 J 2.30 J 3.60 J J

A ball is dropped from a height where it has of potential energy of 200 J. When it still has 50 J of potential energy, how much kinetic energy does it have? J J 3.50 J 4.0 J

A cannonball is launched from the ground with a kinetic energy of 500 J. How much kinetic energy will it have when it hits the ground? 1.0 J J J J

According to the law of conservation of energy, which of the following is true? 1.Energy is neither created nor destroyed 2.Energy can be destroyed by antimatter 3.Energy increases after a chemical reaction 4.Energy decreases after a chemical reaction

Understanding Energy Return your remote

Understanding Conservation of Energy

A ball is dropped from the top of a building where it has of potential energy of 300 J. When it hits the ground 90 feet below, how much kinetic energy does it have? J J J 4.0 J

An arrow is shot straight up in the air with a kinetic energy of 400 J. When it has 100 J of potential energy, how much kinetic energy does it have left? J J J J

Understanding Our Energy Resources

POLL: Which of the following resources would you consider the BEST resource for mankind to be using overall? 1.Petroleum 2.Natural Gas 3.Coal 4.Uranium 5.Biomass 6.Hydropower 7.Geothermal 8.Wind 9.Solar

POLL: Which of the following resources would you consider the 2 nd BEST resource for mankind to be using overall? 1.Petroleum 2.Natural Gas 3.Coal 4.Uranium 5.Biomass 6.Hydropower 7.Geothermal 8.Wind 9.Solar

1.) Complete the “Sources of Energy” Sheet 2.) Please be respectful of those sharing their energy resource

POLL: Has your opinion changed after research? Now, which resource would you consider the BEST resource for mankind to be using overall? 1.Petroleum 2.Natural Gas 3.Coal 4.Uranium 5.Biomass 6.Hydropower 7.Geothermal 8.Wind 9.Solar

POLL: Opinion after analyzing other sources of energy? Now, which resource would you consider the 2 ND BEST resource for the U.S. to be using to generate electricity? 1.Petroleum 2.Natural Gas 3.Coal 4.Uranium 5.Biomass 6.Hydropower 7.Geothermal 8.Wind 9.Solar

Hydrogen FUEL CELLS Hydrogen FUEL CELLS

Solar cells convert what type of energy into electrical energy? 1.Electromagnetic 2.Chemical 3.Nuclear 4.Thermal

The energy stored in gasoline is what type of energy? 1.Electromagnetic 2.Chemical 3.Nuclear 4.Thermal

A ball is dropped from the top of a stadium where it has a potential energy of 200 J. If it loses 10 J to air resistance, how much kinetic energy will it have when it has a potential energy of 50 J J J J 4.60 J

Greatest Inventions – Energy Video

Heat Energy

Conduction Heat transfer by direct contact of particles is called conduction. When your hands touches a metal spoon sitting in a boiling pot of soup, the heat from the bottom of the pot is transferred to you hand by conduction.

Conduction

Convection Convection is the transfer of heat by the movement of a heated fluid. Convection deals with density. Density is the measure of how much mass is there in a volume of a substance.

Convection When a liquid or gas is heated, the particles move faster and the density decreases. As the fluid becomes cooler, its density increases. As density increases, the fluid sinks. Heat Rises!!

Convection The heating and cooling of the fluid, changes in the fluid’s density, and the force of gravity combine to set convection currents in motion. Without heat, convection currents will eventually come to a stop.

Convection in the Earth’s Mantle The heat source for these convection currents in the mantle comes from the heat of the Earth’s core.

Radiation Radiation is the transfer of energy through empty space. Heat transfer by radiation takes place with no direct contact between a heat source and an object.

Heat from the Sun Energy is constantly on the move! The movement of energy from warmer object to a cooler object is called a heat transfer There are three types of heat transfer: radiation, conduction, and convection.

Radiation, Conduction, and Convection

Heat Energy Learning Checks

A lake is warmed by the sun due to which type of heat flow? 1.Conduction 2.Convection 3.Radiation 4.Insulation 5.Electricity

While swimming in a lake, the water feels warmer due to which type of heat flow? 1.Conduction 2.Convection 3.Radiation 4.Insulation 5.Electricity

Presentations Use the “Sources of Energy” Sheet to record and compare information on the energy resources in use on our planet.

Learning Review Ready your remote

In a chemical reaction, what would a chemist call the substances mixed before the reaction? 1.Products 2.Reactants 3.Mixtures 4.Parents

In a chemical reaction, how does the mass of the products compare to the mass of the reactants? (ACCORDING TO THE LAW OF CONSERVATION OF MASS) 1.The mass of the reactants is greater. 2.The mass of the products is greater. 3.The masses are equal. 4.It depends on the energy gain or loss

According to the law of conservation of energy, which of the following is true? 1.Energy is neither created nor destroyed 2.Energy can be destroyed by antimatter 3.Energy increases after a chemical reaction 4.Energy decreases after a chemical reaction

The equation E = m c 2 means what? 1.Energy can neither be created nor destroyed 2.Matter can be converted into energy 3.Everything is made out of matter 4.Chemical reactions release a lot of energy

Which of the following is a renewable energy resource? 1.Oil 2.Coal 3.Wind 4.Natural Gas

Learning Review Return your remote

Learning Review Ready your remote

Which of the following is NOT a form of energy? 1.Chemical 2.Electricity 3.Mechanical 4.Nuclear 5.Antimatter

Learning Review Return your remote