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Science: Use of natural resources
Terms in this set (39)
Part 1: Renewable and Non-Renewable Resources
Energy resources are divided into two categories:
Renewable and Non-renewable resources
****Nonrenewable resources include what 5 things?
Coal, Petroleum (oil), Natural Gas, Propane, and Uranium.*****
Most of the energy used in the United States comes from ___________ resources that are often referred to as _______ fuels.
******Renewable resources include what 5 things?
Solar, Biomass, Geothermal, Hydropower, and Wind Energy Resources.
What are the advantages to Fossil fuels:coal, petroleum, natural gas
Cheap, easy to get and transport
What are the disadvantages to Fossil fuels:coal, petroleum, natural gas
Pollutant, nonrenewable resource. Extraction can damage environment.
What are the advantages to Nuclear energy?
Losts of energy for small amount of fuel
What are the disadvantages to Nuclear energy?
Produces radioactive wastes. Hot water discharge.
What are the advantages of Hydropower energy?
Renewable, no pollution
What are the disadvantages of Hydropower energy?
Must have source of water. (Reservoirs) Dams cause large lakes which flood wild life habitats and people's lands.
What are advantages of Solar energy?
Doesn't produce pollution, limitless
What are the disadvantages of Solar energy?
Costly to make solar panels and cells. No power when sun doesn't shine (cloudy, rain) inefficient, need large area.
What are the advantages of Wind energy?
Non-pollutants, inexpensive, renewable
What are the disadvantages of Wind energy?
Works well only in areas with a steady wind. Very noisy, kills birds. Need large amount of land.
What are the advantages of Biomass energy?
Renewable. Biomass-biofuel-ethanol can burn for fuel and to make steam for power plants.
What are the disadvantages of Biomass energy?
Produces smoke, need large farmland areas. ***
What are the advantages of Geothermal energy?
What are the disadvantages of Geothermal energy?
Only works where there are hot springs or other easy access to interior hot spots
Part 2: Fossil Fuels
Fossil fuels are considered nonrenewable energy resources. What does that mean?
Non-renewable resources are energy sources that will disappear eventually. There is a limit to them.
Why are these resources referred to as fossil fuels?
These resources are referred to as fossil fuels because they were formed from the remains of plants and animals that lived during prehistoric times millions of years ago
Give examples of fossil fuels and include how they are used.
Coal is used as a fuel for furnaces at factories and power plants. Oil can be used to make gasoline and other fuels. Natural gas is boring and used in home stoves, ovens, and furnaces. Propane fireplaces
What are some of the problems associated with the use of fossil fuels?
Fossil fuels are Non-renewable which means they will disappear eventually. They also give off pollutants when they are burned which can cause problems for the environment such as acid rain. Coal ash.
What are some of the problems associated with a dependence on fossil fuels?
Currently we are dependent on energy needs. This causes problems because we will run out of these resources. Also they create problems for the environment because these fuels often give off pollutants.
Part 3: Renewable Resources
What are renewable energy resources?
Renewable resources are resources that can be replenished quickly and easily. They may be limitless.
List the renewable energy resources:
Geothermal-heat from the Earth, Wind-steady wind turns turbines, Solar-sunlight, Biomass-burning points, wood and wastes, Hydropower- water used to turn turbines.
Why will renewable resources become more important in the future?
They will eventually have to replace our dependence on nonrenewable resources. Non-renewable sources are running out. Pollution is becoming rampant.
What are some important advantages of using renewable resources instead of nonrenewable energy resources?
They are non-polluting and won't run out.
Currently renewable resources represents very small percentage of the overall energy consumption in the United States. Why?
Most of the factories and power plants are designed to use fossil fuels. Many of the renewable resources are limited to use in certain areas. Some are still expensive to set up such as solar panels.
Part 4: Forms of Energy and Energy Transformation
List seven major forms of energy:
See study guide for more information of these forms
Mechanical, Chemical, Nuclear, Light/Solar/Radiant, Sound, Electrical, Heat/Solar
For the following situations, describe what is happening during the energy transformations.
After lunch a boy rides his bike to his friends house.
Chemical energy of the food transforms to mechanical energy of the pedals moving the wheels.
A driver fills his car with gas and then drives three hundred miles.
Chemical energy of the gasoline is transformed to mechanical energy of the car.
The electrical toaster is plugged into he outlet and is used to make dinner.
Electrical energy for the taster turns into heat energy to heat the bread.
Sunlight shines on a tree.
Light energy from the sun is turned into Chemical energy (glucose) by the tree.
Coal is burned in the furnace of a power plant.
Chemical energy of the coal turns into heat energy to change water into steam. The steam is used to tun turbines (mechanical energy) and spin generators to make electricity (electrical energy).
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