Power & Efficiency Power Efficiency Energy Resources 1.

Slides:



Advertisements
Similar presentations
Without energy nothing happens.
Advertisements

5.4 Efficiency Have you ever noticed how hot an incandescent light bulb gets after it has been left on for a while? An incandescent bulb transforms only.
Energy Resources Renewable and Non Renewable.
ENERGY By: Phoebe biomass hydropower Wind power Solar power nuclear geothermal Experiment #1 Experiment #2 Energy Transformation Conclusion Credits.
Who Wants To Be A Millionaire?

Types of EnergyForms of Energy Law of Conservation of Energy Amusement Park Physics and Activities Work Renewable and Nonrenewable Sources.
LEFT CLICK OR PRESS SPACE BAR TO ADVANCE, PRESS P BUTTON TO GO BACK, PRESS ESC BUTTON TO END LEFT CLICK OR PRESS SPACE BAR TO ADVANCE, PRESS P BUTTON.
1 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Energy.
Power & Efficiency Energy Resources Power Efficiency.
Alternative Energy. Fossil Fuels Fossil fuels are a very efficient way to produce energy! However… – Burning Fossil fuels creates POLLUTION. – Coal mining.
Energy Resources.
Making Electricity.  A generator takes mechanical energy (movement) and turns it into electrical energy.  A generator makes electricity by turning a.
Energy Resources Nonrenewable.
P1a Energy and Energy Resources 1 Heat Transfer Conduction Convection Radiation 2 Using energy Forms of energy Conservation Efficiency 3 Electrical energy.
WORK.
What is energy? O Energy is the ability to do work. O Just as food gives us energy to focus and play. O Different forms of “natural” energy O potential.
Finish the following sentence: “Energy is the ability to ____.”
Energy Ch. 13 pg Objectives Describe how energy, work, and power are related. Name and describe the two basic kinds of energy.
Jeopardy This iS Energy Energy Vocabulary Potential & Kinetic Energy.
Energy Resources!. Nonrenewable Resources A resource that forms at a rate that is much slower than the rate at which it is used Fossil Fuels – Formed.
Mr. Fleming. D.7 Explain how heat is used to generate electricity. D.8 Describe the availability, current uses and environmental issues related to the.
Energy Resources A natural resource that can be converted by humans into other forms of energy in order to do useful work.
 A. water  B. wind  C. heat  D. coal  A. oil  B. petroleum gasoline  C. natural gas  D. water.
Work, Energy and Power   Introduction   Energy is used to do work Mechanical – motion of objects and gravity   Types of energy: solar, chemical,
Thermal Radiation Thermal radiation is energy transfer by electromagnetic waves All objects emit thermal radiation The hotter an object is, the more thermal.
5.4 Efficiency, Energy Sources, and Energy Conservation
ENERGY Energy Forms, Conversion, Resources and Conservation.
Energy The ability to do work or cause change Examples – kinetic or potential Non-example – matter, ideas Related Words – forms, sources, transfer, transformation.
Energy: Forms and Changes. Forms of Energy  The five main forms of energy are: Thermal (heat) Chemical Electromagnetic (electricity and light) Nuclear.
Work, Energy, and Power Energy, Work, and Power
Chapter 8 Energy Sources and the Environment
Chemical Energy Energy that is released during a chemical reaction or change Type of Potential Energy Examples: – Batteries – Burning Wood – Coal – Oil.
Energy splat! Kinetic energy Gravitational potential energy Heat energy Chemical energy Light energy Electrical energy Watch this space!
ENERGY. Where Does the Energy Go? Friction is a force that oppose motion between two surfaces that are touching. For a roller coaster car to move, energy.
Energy Sources. Fossil Fuels Coal, Oil and Gas are called "fossil fuels" because they are the fossilized remains of prehistoric plants and animals. Coal,
Chapter 13 Energy and Energy Resources Section 1 What is Energy.
Unit 5: Work, Power and Energy. Work Work is done when a force causes a change in motion of an object, or work is a force that is applied to an object.
The Nature of Energy. What is Energy The ability to do work or cause a change is called energy. When an organism does work some of its energy is transferred.
What is a renewable energy resource? By: Harley Marcum.
Thermal Radiation Thermal radiation is energy transfer by electromagnetic waves All objects emit thermal radiation The hotter an object is, the more thermal.
Making Electricity.
S3 Physics - Energy
Jeopardy MORE ENERGY N R G ENERGY ENERGIA Q $100 Q $100 Q $100 Q $100
Chapter 9:1 What is Energy?
Energy and Electricity
Energy and Electricity
ENERGY SUSTAINABILITY
Review Energy Types.
Alternative Power By ECO Stone.
KINETIC ENERGY energy of motion
Energy Resources.
Forms of Energy.
E N E R G Y.
Energy and Electricity
Chapter 4 Work and Energy
Chapter Energy Resources.
Renewable Energy It’s renewable ‘cuz you can use it over and over, and it is (seemingly) limitless.
ENERGY and RESOURCES.
Without energy nothing happens.
Energy and Energy Resources
Energy: Forms and Changes
Energy resources.
Nonrenewable Resources
Energy: Forms and Changes
Without energy nothing happens.
Energy can change from one form to another
Renewable Energy Resources
Types of Energy Chemical Solar.
Energy and Electricity
Presentation transcript:

Power & Efficiency Power Efficiency Energy Resources 1

Power Work done per unit time Energy per unit time P = work/time = energy / time Units Joules per second, Js-1 Watt, W 2

Example A motor-driven lift carries 24 bricks to the top of a 3 m wall. If each brick weighs 10 N and takes 15 s to get to the top, how much is the power output of the motor? If the motor has a power rating of 1000 W, how long will it take to lift 100 bricks? 3

Efficiency Describes how much of the energy supplied is used than wasted. Efficiency = useful output energy/total input energy Output/input No units May be expressed in percentage 4

Example A block is dragged up a slope with a force of 80 N. The block weighs 100 N and the slope is 20 m long and 10 m high. Calculate the efficiency of the work done. 5

Energy Resources Fuel Chemical (burning fuel) Thermal (boiling water) Mechanical or Kinetic (turn turbines) Electrical 6

Energy Resources Solar Light (sun shining on solar panels) Electrical 7

Energy Resources Nuclear Nuclear (splitting of atoms) Or combining of atoms Thermal (boiling water) Kinetic (turn turbines) Electric 8

Energy Resources Wind Kinetic (Moving air) Mechanical or Kinetic (turn turbines) Electrical 9

Energy Resources Wave Kinetic (Moving water) Mechanical or Kinetic (turn turbines) Electrical 10

Energy Resources Hydroelectric Potential (water at a height) Kinetic (Moving water) Mechanical or Kinetic (turn turbines) Electrical 11

Energy Resources Geothermal Thermal (Heat under the earth) Thermal (boil water) Mechanical or Kinetic (turn turbines) Electrical 13

Questions Which energy resource does not boil water? Which energy resource does not turn turbines? Which energy resource does not rely on the sun? 14

Questions Which energy resources are renewable? Which energy resources are non-renewable? Which energy resource is the best? Why? 15

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.