* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Energy - Griffin School District
Kinetic energy wikipedia , lookup
Energy subsidies wikipedia , lookup
Directed-energy weapon wikipedia , lookup
100% renewable energy wikipedia , lookup
Open energy system models wikipedia , lookup
Potential energy wikipedia , lookup
Public schemes for energy efficient refurbishment wikipedia , lookup
Low-Income Home Energy Assistance Program wikipedia , lookup
World energy consumption wikipedia , lookup
Energy storage wikipedia , lookup
Zero-energy building wikipedia , lookup
Energy Charter Treaty wikipedia , lookup
International Energy Agency wikipedia , lookup
Alternative energy wikipedia , lookup
Energy returned on energy invested wikipedia , lookup
Regenerative brake wikipedia , lookup
Energy efficiency in transport wikipedia , lookup
Internal energy wikipedia , lookup
Energy policy of Finland wikipedia , lookup
Gibbs free energy wikipedia , lookup
Low-carbon economy wikipedia , lookup
Environmental impact of electricity generation wikipedia , lookup
Energy policy of the United Kingdom wikipedia , lookup
Energy harvesting wikipedia , lookup
Negawatt power wikipedia , lookup
Energy policy of the European Union wikipedia , lookup
Conservation of energy wikipedia , lookup
Life-cycle greenhouse-gas emissions of energy sources wikipedia , lookup
Energy in the United Kingdom wikipedia , lookup
Energy Independence and Security Act of 2007 wikipedia , lookup
Earth Science 2010-11 Main Themes in Earth Science: Energy Systems Cycles Change Energy occurs in several forms: Light Heat Motion: kinetic energy Stored energy: potential energy Chemical potential energy: food, battery, gas, wood, etc. Mechanical potential energy: compressed spring Gravitational potential energy Electrical energy Nuclear energy Energy is the ability to do work (to make something move) Energy is constantly changing from one form to another example: a car changes chemical potential energy into kinetic energy (movement) and heat Bill Nye Video: Energy (complete this on a separate sheet of paper) Describe 15 different kinds of energy conversions that take place in the video. For each one, tell how the energy was changed. Example: Burning candle: chemical energy is converted into heat and light A system is a set of individual parts that work together to perform a task or function Each part has a unique role in making the system work Remove any part, and the entire system won’t work as well All systems need ENERGY to function Systems convert energy from one form to other forms Example: a car engine is a system that converts chemical energy into motion and heat Examples of Systems? Circulatory System Electrical System Ventilation System Ecosystem Aquarium And more systems . . . Nervous System (human or other animal) Plumbing System (house) Transportation System (state or country) Operating System (computer) Electrical System (car) Solar System (astronomy) Systems Assignment Copy and complete on a separate page in your notebook. Due tomorrow. Describe four systems that can be found here at Griffin School For each of the systems you have described: 1. 2. 3. Name five parts of the system Describe the energy source that “runs” the system Describe how the system changes the energy it uses Cycles In nature, EVERYTHING is recycled (except energy) Oxygen Water Think about where all those water molecules have been before they became a part of you . . . Carbon ALL “your” molecules came from somewhere (or something) else Examples of Cycles: Oxygen Cycle Water Cycle Carbon Cycle Nitrogen Cycle In Nature, the only constant is Change Mountains erode Stars evolve (our sun will be a red giant) Continents move Organisms grow and die New species emerge Lakes become meadows, meadows become forests ecological succession