Science+C15+Outline,+ENERGY

Energy exists in many forms and can be changed from one form to another.
I. What are kinetic and potential energy? A. Energy 1. Scientists definition of energy is the ability to __a change in matter 2. Causing movement is a change 3. Law of Conservation of Energy says energy can never be__ __or destroyed a) Energy can change forms from hi to low, from gasoline to speed, from food to movement B. Kinetic and Potential Energy 1. All energy is either__ __- or__ 2. Kinetic - energy of __3. Potential- energy because of condition or__ 4. A t the top of roller coaster, you ‘d have ___energy 5. An flying airplane has__ _energy C. Energy Transfer 1. The movement of energy from one place or object to another is __2. A compressed spring has__ __energy D. Summary: Energy is the ability to cause a__ _ __in matter. All energy is either stored__ _ __or in motion,__ _. Energy can be transferred from one place to another. II. What are some forms of energy? A. Solar Energy source of almost all energy on our Earth 1.Energy from the __2. Kinds of solar energy: radiation as either light or__ __, X-rays, ultraviolet rays, radio waves 3. Solar heat energy supports life on hear 4. Light helps plants make food and oxygen 5. Fossil fuels, coal oil & gas come from long dead__ _ __&__ __6. Uneven heating of earth produces wind energy and water cycle 7. Solar energy can be changed to electricity to run tools 8. Solar collector panels absorb sun’s energy to heat water 9. Problems with solar energy a. Solar cells are__ _ __b. Not always sunny B. Chemical and Mechanical Energy 1. Chemical energy released by__ reaction a. Evidence of chemical reaction: heat, light, color change, precipitates, smell, gas 2. When not in use chemical energy is stored, i.e. potential 3. Mechanical energy has both potential and kinetic too a. Release of tight (potential energy) spring give motion, _ energy B. Electricity and Sound 1. Electricity energy comes from movement of _ __2. Sound energy comes from the vibration of__ 3. TO hear, matter vibrates against your 4. Can feel sound energy vibrate matter around you E. Changing Energy Forms 1. Flashlight changes battery’s _- energy into _ energy which passes across a thin wire in the bulb to __energy F. Summary: There are many forms of energy: solar, chemical, mechanical, electrical, and sound. These types of energy can be changed into other forms. III. How is heat transferred? A. Heat and Temperature 1. Movement of matter is a kinetic energy called thermal__ _ __2.__ _ __is transfer of thermal energy between mater 3. Thermal energy goes from__ to  __object 4. Temperature = average___ energy of matter in a substance 5. Increase in thermal energy causes change in a substance’s state of matter B. Thermal Energy Transfer 1. Heat moves through system in 3 ways, _ __,__ , 2. _ __is transfer from one object directly into another 3.__ _ __transfer through a gas or liquid 4.__ _ __transfer through waves of energy 5. Radiation is different because it does not need__ _ __to travel C. Insulators and Conductors 1.__ _ slow the movement of thermal energy 2. __allow thermal energy to move through it easily 3. Styrofoam wool, fiberglass are__ 4. Many metal are _ IV. How do people use energy resources? A. Nonrenewable Energy Resources 1. coal, oil and natural gas formed from the remains of once-_ things 2. It takes _ __of years for them to form 3.__ are materials that can be used to satisfy a need 4. A resource that cannot be replaced within a reasonable amount of time is a _ 5. To prevent using up all our nonrenewable resources we must

B. Renewable Energy Resources 1. A resource that can be replaced is __2. Some \renewable resources are__ energy,  water, C. Conservation and the Environment 1. Fossil fuels cause pollution 2. Pollution is anything that dirties of harms our 3. What are 2 ways you do to conserve energy? a.

___b.___

D. SUMMARY: Some resources like fossil fuels cannot be replaced, Renewable resources can be just as effective as fossil fuels, but right now they cost more.

___ Chapter 15 VOCABULARY Energy Kinetic energy Potential energy Solar energy Light Chemical Mechanical Electric energy Heat System Conduction Convection Radiation Reflection Fossil Resources Nonrenewable resource Conservation Renewable resource Pollution