Post on 16-Dec-2015
transcript
The Natural World
•Renewable Resources
•Nonrenewable Resources
•Inexhaustible Resources
Try to imagine a world without the natural resources we use to fuel our cars, light
our homes and pave our highway.
Natural resources run our cars, rocket ships, video games, factories, and
practically our entire lives.
All forms of transportation-walking, riding a bus, riding your bike or
horse, or driving a car-use energy. However, some forms use energy
that can be renewed, and some use energy that can’t be renewed.
We can divide all sources of energy and materials into three categories:
inexhaustible, renewable, and nonrenewable.
Resource: Natural materials that are considered valuable.
What is a resource?
Inexhaustible Resources
Inexhaustible Resources: Resources that have no practical
limits, such as solar or hydrothermal energy.
Inexhaustible resources, such as sunlight, cannot be used
up. Water is considered inexhaustible because the Earth will always have the
same amount of water
Air, wood, cotton, food, water, land, trees, fish, fertile agriculture, soils, crops and wildlife
are renewal natural
resources.
Renewable Resources: •Resources that can be replaced over a relatively short time period, such as fresh water, hydroelectric power, or living resources. •Renewable Resources are resources that can grow again and will last (as long as they are not overexploited).
Renewable Resources
Non-renewable Resources include minerals and fossil fuels.
Aluminum, tin, copper coal, oil, and natural gas are
examples of non-renewable resources.
These exist in limited quantities and can’t be replenished by natural processes within
the foreseeable future.
For example, fossil fuels, which are the remnants of prehistoric organisms, take millions of years to form.
Non-renewable Resources
Non-renewable Resources: Resources
that accumulate over such a long period of time that they must be considered
as fixed, such as minerals or fossil fuels.