Natural Resources

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Fossil Fuel: A ________________ energy source formed from ancient plants and __________ buried in Earth's crust for __ of year

Nonrenwable, animals, millions

Nuclear fission: the process in which the ___________________ of a radioactive atom is _________, forming lighter elements and releasing a _____________ amount of _______________

Nucleus, split, huge, energy

Recycling is only ________ of the solution to our ____________ problem

Part, resource

________________ resources are used to produce electricity and _________

Renewable, fuel

Wind energy is clean and ________________, but depends on strong winds blowing most of the time and wind farms take up a lot of _________--.

Renewable, land

The trash amount per person has ____________

Increased

Hydrogen is the ______________atom, is a flammable gas, and must be handled with _________.

Simplest, care

Example: Glass, _______________, cans, certain __________, paper

Aluminum, Plastic

Because hydroelectric power doesn't _______any fuel, it produces no ____________________.

Burn, pollution

Burning fossil fuels produces excess ______________, harmful acids, and other forms of _______________

Carbon dioxide, pollution

Minerals are found in _____, airplanes, tools, wires, and __________ chips

Cars, Computer

Fossil Fuels burn ___ and produce a lot of ____. They are used to run most of the ____ plants that generate___________.

Easily, heat, power,electricity

Nuclear waste will remain __________________ for thousands of years, so countries using it face the challenge of _____________ it safely

Fadioactive, storig

Wind _______are areas with hundreds of _______________.

Farms, windmills

Fossil Fuels are the most ______ used sources of energy, but _______________ power is also used to produce _______________

Commonly, nuclear, electricity

However, hydrogen fuel is very ____________and takes a great deal of energy, time, and _________.

Expensive, money

Conservation programs try to ____________ our natural resources, protect our _______, and slow the amount of _______produced.

Extend, health, trash

In nuclear power plants, nuclear ______ is used to__________ the water

Fission, heat

People can use _________water to produce electricity.

Flowing

Many of the products you use come from _____________________

Fossil fuels

Solar cells were created to ______the sun's ________.

Trap, energy

There are ____ ways to : ____________ cut back _________ use more than once

Two, Reduce, Reuse

Sunlight is an ____________source of ___________energy but current methods of collecting sunlight are __________and somewhat __________.

Unlimited, clean, expensive, inefficient

Nuclear power plants use ____________________ atoms as fuel

Uranium

Geothermal energy comes from underground _________that is heated by ______ ______.

Water, hot rock

Renewable resources provide only a ___________percentage of energy used because these resources can't produce enough ________to pay for the ________of developing them on a ______scale.

Small, energy, cost, large

When a uranium nucleus splits, it forms 2 __________ nuclei and releases a few neutrons and a large amount of _______________ in the form of light and ______________

Smaller, energy, heat

_______cell: a special ________device that converts light energy to __________.

Solar, layered, electricity

Hydrogen fuel cells are used to supply electrical energy on _____________and space stations and is being tested on other forms of ___________________.

Spacecraft, transportation

In a solar cell, when _________strikes the cell, __________move from the lower layer to the upper layer, producing an _______________current.

Sunlight, electrons, electrical

The energy in fossil fuels represents a form of stored _________, since ancient organisms depended on the _____

Sunlight, sun

The average ____________of the Earth are ___________, and the rate of increase is getting faster and ________________.

Temperatures, increasing, faster

Example: _____ is usedto build homes and to make furniture, utensils, and _________

Wood, Paper

Recycling invoves _______ and extending natural resource

reusing

People use natural resources make_______, build cities, _______their homes and make their lives more comfortable.

tools, heat

These energy sources are in __________supply and usually produce electricity or _______ with little or no ____________.

unlimited, heat, pollution

Hydroelectric energy: electricity produced by moving ________.

water

Sources of renewable energy are moving________, wind, Earth's internal heat, _____________, living matter, and hydrogen.

water, sunlight

For thousands of years, people have used ______energy to move ships, grind ___________, and pump water. Today, people use wind energy to generate ____________________.

wind, grain, electricity.

The modern _________is made of metal and plastic. The ___________turn a set of gears that drives the generator to produce __________.

windmill, blades,electricity

People also know that there are _____ AND _________ in using natural resources; for example, coal produces_____ but also _______ the air

cost, benefits, heat, pollutes

Natural resource: any _______source, organism, or substance found in _________ that people use.

energy, nature

These energy sources also help to preserve the ____________________________and protect human ___________.

environment, health

Nonrenewable resource: a natural resource that exists in a ____ amount or that is used up _______ than it can be __________ in nature

fixed, faster, replaced

Fossil fuels, ____________, and plants supply materials for modern products

minerals

Includes ______, coal, and natural ____

oil, gas

Biomass energy: ______________matter, like ____________(corn starch → ethanol) and animal ____________, that can be used as ______.

organic, plant, waste, fuel

Biomass ________stations burn ______and other plant material to produce electricity.

power, wood

Conservation means ___________, restoring, and ________natural resources so they last _________.

protecting, managing, longer

We need to _______ the amount of pollution.

reduce

Natural resources can be classified as ________ and _________________

renewable, nonrenewable

Although biomass is a _______________________resource, burning biomass can produce a lot of carbon dioxide (____________).

renewable, pollution

Renewable resource: a natural resource that can be ___________ in nature at about the ______________ as it is used

replaced, same rate

In the U.S., geothermal energy provides electricity for nearly ___________________ homes.

3.5 million

_____________ than fossil fuels

Cheaper

Hydrogen is a _______source of energy and produces ________and _________as byproducts.

Clean, water, heat

Building __________can cause problems for the environment by _____________wildlife habitats, interfering with ________________of fish, and making it harder to raise crops and livestock (some areas at the end of the river may receive ___________water).

Dams, destroying, migration, less

Fossil Fuels supply most of society's ___________

Energy

Natural Resources provede materials and

Energy

Recycling takes time, _________, and ____________, but can help extend available resources, and protect human ___ and the environment

Energy, money, health

Although nuclear fission produces a lot of ____________, it also produces radioactiv ____________ that can cause death and_____________ if living things are exposed to it long enough

Energy, waste, disease

In __________ fuel power plants, water is __________ to make ______ that turns a turbine, which drives a generator to make electricity, _________ fossil fuels (like wood or coal) _________ the water

Fossil, boiled, steam,burning, boil

Hydrogen is used in a hydrogen _______cell, which is a device that produces _________________by separating hydrogen into protons and ____________.

Fuel, electricity, electrons

It is caused by increase greenhouse _______(like _________ __________) in the atmosphere that ____heat and cause the Earth to __________up.

Gases, carbon dioxide, trap, heat

Geothermal Energy: energy produced by __________within Earth's ______.

Heat, crust

The supply of any nonrenweable resource is _____________----

Limited

The Earth does go through _____________warming and cooling cycles, but the current warming is happening too __and is too _________to be natural.

Natural, fast, extreme

Example: Oil is broken down into different parts that are used to make __________

Plastics

Factory waste can ________, air, _______, and soil

Pollute, water

Fossil fuels must be burned to generater______ for the factories and businessess that make thee _________

Power, Produts

Not every item can be ______ or reused

Recycled

Conervation involves _________waste and reusing _________ resources

Reducing, natural

Recycling: The __________ of materials that people would otherwise _______________

Reusing, throw away

Solar cells can be ______together in solar _____.

Wired, panels

Geothermal energy is _________and renewable but is _____________to areas where hot water is close to the _______________.

clean, limited, surface


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