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Science Unit 9 Human Impact On Earth
Terms in this set (28)
A natural resource is any
natural material which is used by humans such as: air, soil, minerals, water, petroleum, plants and animals.
The energy which we get from natural resources such as petroleum or wind originally comes from
the sun's energy.
The atmosphere contains
the air we breathe.
The atmosphere controls
The atmosphere produces
Rainfall from the atmosphere renews
the water in the oceans, rivers, lakes and streams in the water cycle.
Nonrenewable and renewable are
the two categories of natural resources.
A renewable resource is
a natural resource which can be replaced at the same rate at which the resource is consumed.
Examples of renewable resources include
solar energy, water, air and trees.
Inexhaustible resources are
renewable natural resources which can never be used up.
Examples of inexhaustible resources include
solar energy and wind energy.
A Non renewable resource is a
natural resource that forms at a rate that is much slower than the rate at which it is consumed.
Some natural resources, like minerals, form at a rate which is
A fossil fuel is a
non renewable resource formed from buried remains of plants and animals that lived long ago.
Coal, oil and natural gas are
types of fossil fuels.
Some renewable resources, such as water, may also be considered non renewable if
they are not used wisely.
A material resource is
a natural resource that humans use to make objects or to consume as food or drink.
Material resources can come from
Earth's atmosphere, crust, fresh water and oceans, and from organisms, such as plants and animals.
Some examples or material resources include
oxygen from the atmosphere, minerals from the Earth's crust, salt from ocean water, fabric from cotton and other plants, rubber from tree sap, food from animals.
An energy resource is a natural resource that
humans use to generate energy.
Most of the energy used by humans
comes from fossil fuels.
Examples of energy resources include
fossil fuels, moving water, solar power, wind power and horse and camel power.
When fossil fuels are burned, they
release energy, usually in the form of heat, which is used to produce mechanical and electrical energy.
Why are natural resources important to humans?
Because humans use natural resources to breathe, drink, eat, make clothes, build homes and cars, and produce energy.
Give one example of a material resource:
a cedar tree which can be made into a guitar.
Give one example of an energy resource:
camp fire wood which can be burned to produce heat.
How do non renewable and renewable resources differ?
Renewable resources are replaced at a rate greater than or equal to the rate at which they are consumed, and can be used consumed in an almost unending manner.
Non renewable resources are replaced at a SLOW rate. They will eventually be completely consumed.
Name one renewable resource and one non renewable resource. Explain your answer.
Solar energy is a renewable resource because the sun always shines. Coal is a non renewable resource because it takes millions of years to form.
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