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Green city Challenge

QuestionAnswer
What are the three r's of sustainability? Reduce, Reuse, Recycle
What are three benefits of recycling? The materials don't go in a landfill, raw materials aren't consumed, and energy and costs are saved from not having to obtain new materials.
A ________ is a location that is outfitted with special materials to contain our trash. landfill
A landfill can collect the gases that are a byproduct of decomposing garbage and use these gases as fuel for __________ _________. generating electricity
What are fossil fuels? Fossil fuels such as coal, oil and natural gas, formed over millions of years from the remains of ancient plants and animals.
Name three fossil fuels. Coal,oil and gas
What is the difference between a renewable resource and a non renewable resource? Renewable resources are sources of energy theater constantly replenished. Non-renewable resources are consumed as they are used. They took millions of years to form teh decaying remains of plants and animals.
______ is the ability to do work. Energy
Work is... moving an object across a distance.
_________ is the movement of heat between objects that touch each other. Conduction
_______ are materials that allow heat energy to pass through them. Conductors
__________ are materials that do not allow heat to move through them easily. Insulators
Convection is... the movement of heat energy through liquids and gases in currents.
Radiation is... heat energy that moves through space.
Temperature is... the average speed of particles in a substance.
Created by: crafter16