Carbon Footprint
What is a carbon footprint?
Impact of activities have on the environment and climate change
What is a renewable resource example?
solar, wind, water, geothermal, biomass
Fossil Fuels, Uranium
What is an Ionic Bond?
Transfer between valence electrons
What is the center of an atom called?
Nucleus
What factors determine carbon footprint?
Travel
Household Appliances
Food
Shopping
What is the definition of renewable Energy?
What is Resources that can be replaced by natural processes in a relatively short amount of time
Definition of nonrenewable energy
resources that are used faster than they can be replaced by natural processes
What is a covalent bond?
Sharing of Valence Electrons
What is the charge of each
Proton
Electron
Neutron
Proton: Positive
Electron: Negative
Neutron: Neutral
What is phantom or vampire energy?
The amount of electrical power used by an appliance that is switched off
What is the advantages of Renewable Resources?
Nonpolluting (solar, wind, water)
Available in the United States (solar, wind, water, geothermal, biomass)
Relatively inexpensive (wind)
Produces little pollution (geothermal)
Reduces organic material in landfills (biomass)
Advantages and Disadvantages of fossil fuels
Advantages: Fairly easy and direct to transform chemical energy to electrical energy ; relatively inexpensive ; relatively east to transport
Disadvantages: limited supply ; habitat disruption ; pollution from mining and from burning
What two elements bond to form an Ionic Bond?
Nonmetals and Metals
What kind of bond will Sodium and Chloride form?
NaCl - Ionic Bond
Projector, Microwave, Refrigerator, Smart board
Describe how people use the different renewable resources.
Solar, Hydroelectric, Geothermal
Solar: solar cells capture light energy from the sun and covert it to electrical energy
Hydroelectric: Dams across powerful rivers produce electricity from flowing water
Geothermal: Thermal energy from Earth's interior produces steam that turns turbines to produce electricity
Advantages and Disadvantages of nuclear energy
Advantages: small amount of uranium produces large amount of energy ; well run plant does not pollute air, soil or water
Disadvantages: Uranium is nonrenewable ; an out of control chain reaction can release harmful substances into the environment ; nuclear waste is radioactive
What forms to create a covalent bond?
Two Nonmetals
What kind of bond does Hydrogen and Oxygen form?
Wattage x Hours not in use per day / 1000 = kWh
Biomass, Water, Wind
Biomass: air pollution ; less efficient than fossil fuels
Water: affected by long periods of no rainfall ; negative impact on aquatic ecosystems ; limited to areas with fast-flowing rivers
Wind: best sites are far from urban areas ; limited to areas with strong, steady wind ; potential impact on bird populations
What does the formation of fossil fuels depend on?
Type of organic matter
temperature and pressure
length of time material was buried
How do you find the amount of valence electrons on a periodic table
The numbers on the top of the columns
Who is your favorite teacher?
Better be your strategies teachers ;)