Presentation is loading. Please wait.

Presentation is loading. Please wait.

Resources and Land Use World Resources Section One.

Similar presentations


Presentation on theme: "Resources and Land Use World Resources Section One."— Presentation transcript:

1 Resources and Land Use World Resources Section One

2 Natural Resources Materials used in the natural environment that people value and use to satisfy their needs. Materials used in the natural environment that people value and use to satisfy their needs.

3 Renewable Resources Natural resources that are constantly being regenerated, or replaced by the environment. Natural resources that are constantly being regenerated, or replaced by the environment. Examples are; Soil, water, and sun. Examples are; Soil, water, and sun. Natural growth takes time and human activity can interfere with the process of renewal. Natural growth takes time and human activity can interfere with the process of renewal.

4 Nonrenewable Resources These resources cannot be replaced once they have been used. These resources cannot be replaced once they have been used. Examples are: minerals, especially fossil fuels such as coal, oil, natural gas, iron, copper, aluminum, uranium, and gold. Examples are: minerals, especially fossil fuels such as coal, oil, natural gas, iron, copper, aluminum, uranium, and gold. Recycling is a way to increase nonrenewable resource supplies. Recycling is a way to increase nonrenewable resource supplies.

5 Energy Sources The main energy source today is nonrenewable fossil fuels. The main energy source today is nonrenewable fossil fuels. Nations are searching for new sources of energy and competing for those that already exist. Nations are searching for new sources of energy and competing for those that already exist.

6 Depending on Fossil Fuels Nearly all modern industrialized countries, including the United States, depend heavily on fossil fuels. Nearly all modern industrialized countries, including the United States, depend heavily on fossil fuels. Most nations have to import these fossil fuels because they dont have a sufficient supply to meet their own needs. Most nations have to import these fossil fuels because they dont have a sufficient supply to meet their own needs. Oil and natural gas reserves are unevenly spread around the world. Oil and natural gas reserves are unevenly spread around the world. Over half the worlds oil supplies are in southwestern Asia (the Middle East). Over half the worlds oil supplies are in southwestern Asia (the Middle East). The worlds oil reserves are estimated to run out in 100 years or so. The worlds oil reserves are estimated to run out in 100 years or so. Coal is more evenly distributed and the United States, China and Russia have rich deposits. Coal is more evenly distributed and the United States, China and Russia have rich deposits. These reserves are expected to last 200 years. Burning coal has drawbacks as it creates air pollution and acid rain. These reserves are expected to last 200 years. Burning coal has drawbacks as it creates air pollution and acid rain.

7 Nuclear Energy Produced by fission (splitting of uranium atoms in a nuclear reactor to release their stored energy). Produced by fission (splitting of uranium atoms in a nuclear reactor to release their stored energy). Many countries supply part of their energy through electricity that is created by nuclear power. Many countries supply part of their energy through electricity that is created by nuclear power. There are many concerns surrounding the use of nuclear power: There are many concerns surrounding the use of nuclear power: 1. Radiation leaks 2. Explosions 3. Disposal of radioactive waste 4. Use of uranium, a non-renewable resource

8 Other Energy Sources These are alternatives to the use of fossil fuels in limited use in the world today: These are alternatives to the use of fossil fuels in limited use in the world today: 1. Water power- the use of falling water to move machinery or generate electricity. Dams are used to harness this energy. Water is a renewable resource. 2. Geothermal energy- energy that comes from the earths internal heat. Magma heats underground water which produces steam. This can be used to heat homes or make electricity. Iceland, Italy, Japan, and New Zealand all make use of this form of energy. 3. Solar Energy- energy produced by the sun. This energy has been used to heat homes and water for many years. This is potentially the greatest source of renewable energy.


Download ppt "Resources and Land Use World Resources Section One."

Similar presentations


Ads by Google