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The Three Categories of Natural Resources
Transcript of The Three Categories of Natural Resources
Renewable resources are natural resources that can replenish or reproduce naturally over time.
Renewable resources will grow or reproduce themselves if they are managed properly.
Examples of Renewable Resources
Fruits and vegetables
Meat from animals
A flow resource is neither a renewable resource or a non-renewable resource. It doesn't stay in one area, it moves around because of natural actions in the physical environment.
Examples of Flow Resources
Non-renewable resources are resources which are
sustainable because their formation takes billions of years.
Non-Renewable resources can be extracted and used only once.
Examples of Non-Renewable Resources
Diamonds are non-renewable elements because even though they can replenish, it takes billions of years before they can reform again.
Petroleum is known as a fossil fuel. Fossil fuels are formed when sea plants and animals die and their remains are buried under thousands of feet of silt, sand or mud. Fossil fuels take millions of years to form and therefore petroleum is considered to be a non-renewable source.
Coal, along with petroleum, is also considered a fossil fuel, therefore it is also non-renewable.
Timber is renewable because trees drop saplings when it is windy. These saplings are seeds that can reproduce into new trees.
Oxygen is a renewable resource because trees create oxygen that we inhale. When we exhale we let out carbon dioxide. The trees breathe it in and the cycle repeats.
Animals are renewable resources because when a female and male of one species reproduce they create new babies.
Wind is a Flow Resource because actions produced by the sun create thermal energy. The earth's rotation also creates wind. These types of forces will never end or need other sources of energy; they will always be there.
The Sun is a Flowing Resource because it gives off a consistent, reliable and powerful source of energy that is not expected to run out for another billion years or so. It also causes no damage to the earth's atmosphere.
Tides are Flowing Resources because tides move a huge amount of water twice each day and harnessing it could provide a great deal of energy.
Tides are caused by the interaction between the Earth's, the Sun's, and the Moon's gravitational pull.
The Sun is a giant sphere of gas with huge quantities of hydrogen under pressure at its extremely hot core. The pressure and the hot temperature cause the hydrogen to convert to helium. This reaction releases an enormous amount of energy. Some of this energy reaches earth.
The Sun provides us with heat and energy. Without the Sun, nothing could live on earth. It supplies light and heat, both of which can be transformed into energy. One reason why this is important is because plants and trees need energy. We depend on plant and trees for our food, our oxygen, protection and more.
There are five layers of atmosphere that surround Earth . These five layers are the Exosphere, Thermosphere, Mesosphere, Stratosphere, and Troposphere. The layers of the Atmosphere are made up of gases: 78 percent nitrogen, 21 percent oxygen, and the remainder is made up of other gases. They are held in place by Earth's gravity. The layer of Atmosphere closest to Earth is the Troposphere. It makes up 75 percent of the Atmosphere, even though it only extends from Earth's surface to between 6 to 18 km above Earth. Weather takes place in this thin layer, as does most of life on Earth.
The atmosphere is important because it protects the Earth from the harsh heat of the Sun. Without the Atmosphere we would burn to death in the day or freeze to death at night. Also, the ultraviolet rays from the Sun can cause skin cancer eye problems and it can harm trees, plants, and animals. Without these resources and with these potential problems that is why the Atmosphere is a MUST.