science ch.9 lesson 1,2,
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what is a fossil fuel? | a energy source formed from the decayed remains of ancient plants and other organisms.
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| what are some examples of fossil fuels? | coal, oil and natural gas
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| where did coal come from? | millions of years ago in swampy regions where fern like plants grew
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| how did coal form? | the remains of ancient swamp vegitation over time.
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| where does oil & natural gas come from? | it is formed from algae and other organisms that have died - over millions of years ago.
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| the decayed material eventually forms ___ and ___. | liquid and gas
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| why does oil and natural gas move up wards after they formed? | oil and natural gas once formed move upward because they are less dence then the rock surronding them. they became trapped by rock that is too thick to pass through.
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| where is fossil fuels burned? | in cars, power plants, homes, and factories
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| what is pollution? | harmful waste products, chemicals, and substances found in the enviroment.
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| how many people died because of air pollution? | 60,000
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| what is acid rain? | a product when gases released by burning oil and coal mix with water in the air to form acidic rain or snow.
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| what is a nonrenewable source? | resources that cannot be replaced by natural processes in less then 100 years.
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| are fossil fuels nonrenewable? | yes, that means humans can run out of these important resources of energy someday.
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| what is a renewable resource? | energy that can be recycled or replaced.
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| what uses energy from the sun? | solar energy
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| what changes light into electicity? | solar cells
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| one hour of energy reaches earth can last for how long? | one year
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| what uses windmills? | wind energy
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| what is a wind farm? | many windmills in one area
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| what is hydroelectric power? | using moving water
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| what are two sources of moving water? | natural waterfalls and concrete dams
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| what are some disadvantages of hydroelectric power? | it increases eroison downstream, wildlife habitats disturbed, and some places not near flowing water
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| what is geothermal energy? | it is when you use the magma and hot rock beneath Earth's surface.
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| when magma close to Earth's surface what happens? | geysers erupt
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| what is nuclear energy? | produced by splitting nuclei of certain elements
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| what is another name for the splitting procces? | fission
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| how long can coal last? | 200-300 years
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| how many years does oil last? | 30-40 years
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| what are the 4 renewable resources? | sun, wind, water, and geohtermal energy
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| does energy from the sun cause pollution? | NO
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| are many alternative sources of energy renewable or nonrenewable? | renewable
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| how do we use wind? | by sailing, flying kites, and when we use windmills.
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| who uses niagra falls fro hydrolelecrtic power? | Canada and eastern North America
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| what are some disadvantages of dams? | it starts sediment, erosion, land is flooded, and habitats disturbed
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| what are some disadvantages of geothermal energy? | it releases salty water at earth's surface which causes plants and animals to get hurt, only a few places have magma, it is hard and expensive to drill for magma.
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| what is the most recent found fuel in nuclear power plants? | uranium
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| what can nuclear energy cause? | cancer, or have other harmfull effects on living things
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| how many years will the nuclear waste remain radioactive? | for more than 10,000
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| worldwide how many countries use nuclear energy to generate electricity? | 30 years
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| what percent of the world's energy is supplied by fossil fuels? | 90 percent
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| what percent of Earth is covered by water? | 70 percent
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| all living things need what kind of water to survive? | clean water
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| what two things help shape Earth's surface? | erosion and deposition
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| what continually moves water? | the water cycle
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| how much of Earth's water is salt water? | 97 percent
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| what is groundwater? | water that soaks into the ground and collects in small spaces inbetween bits of soil and rock
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| in the U.S. how much groundwater provides us public water supply? | 40 percent
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| where does surface water come from? | fishing, swimming, cooking, and bathing
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| what is water pollution? | harmful debris, chemicals, or biological materials added to water
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| what is a point source pollution? | some pollution comes from a single, identifiable source
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| what is a nonpoitn source of pollution? | a source of pollution that can't be traced back to an exect location
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| is land a renewable resource? | YES
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| before building, what do the people have to look for? | indangered plants or animals, the soil is right, and if it will effect the water
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| what affect do trees have on us? | they make oxygen and carbonyhrates
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| what can carbon dioxide? | global worming
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| what is global worming? | a rise in tempurture around the world
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| what is conservation? | the careful use of resources with the goal of resucing damage to the enviroment
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| is a tree a nonrenewable resource or a renewable resource? | renewable resource
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| why are forests a nonrenewable resource? | they are a complex ecosystem that supports countries living things
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| what is another source that is obtained by land? | minerals
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| hwta is an ore? | a mineral resource that can be mined at a profit
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| This is vital to earth | Water
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| The earth is cover by what amount of water | 70%
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| What percentage of the earth is land | 30%
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| What are the two major sources of water used for the public water supply? | Ground water and water found on the earth's surface
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| How many laws are there to reduce water pollution? | 2
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| What are the two laws that help reduce water pollution? | Safe Drinking Water Act and The Clean Water Act
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| What does the Safe Drinking Water Act do? | ensures safe drinking water
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| What does the Clean Water Act do? | gives states money to build water treatment plants
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| Is land a renewable resource? | YES
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| The amount of land is ____________? | limited
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| What are things that people must do use the land wisely? | (1) preserve natural habitats and reduce soil erosion.
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| what are the three uses of land? | Land, forests, minerals
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| What a re some things people must do when they use land? | Preserve natural habitat and reduce soil
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| What is an important product from the forest? | wood
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| What is it called when there is a careful use of resource to reduce environmental damage? | conservation
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| What is it called when you limit the number of trees in one area are cut down and replaced? | Select cutting
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| What is it called when all the trees in one area are cut down and replaced? | clear cutting
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| This is a renewable resource that can be replenished by planting a tree? | Tree
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| This is a renewable resource of a complex ecosystem? | Forest
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| These are land resources found in rocks? | minerals
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| This is a mineral at a profit? | ore
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| Where is ore founded? | under the earth surface
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| What is an example of a metal? | Iron
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| What is iron? | a type of metal
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| What is the process used to reach ore? | Mining
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| What does mining do? | It moves large qualities of soil and rock
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| What negative effects does mining have? | It affects the enviroment
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