Science Quarter 4 Module 2

• Types of natural resources

  • Renewable
  • Nonrenewable
• Renewable resources


  Materials that can be replaced easily or have the potential to be replaced over time
• Nonrenewable resources


  Natural resources that are in limited supply or once consumed, cannot be replaced
• Philippines is considered rich in natural resources
• Philippines receives abundant rainfall and lots of sunshine due to tropical climate
• Watershed


  Catchment area that drains the water into streams, rivers, lakes, and springs
• Water is a renewable resource
• Soil is a nonrenewable resource as it takes thousands of years to form
• Watersheds


  Areas that supply the water needed by the communities and the varied life forms in that area
• Severe drought

  May cause rivers and deep wells to dry up
• When rain comes, the water is replaced
• Water


  A renewable resource
• Too much rain


  Can cause floods which can wash away the top soil where plants grow
• Top soil cannot be replaced easily
• Soils are formed

  From rocks that were broken down by physical and chemical weathering along with the materials from dead plants and animals
• It takes thousands of years for soils to form
• Soil


  A nonrenewable resource
• Philippines is recognized as the fifth mineral-rich country in the world, third in gold reserves, fourth in copper, and fifth in nickel
• Pacific Ring of Fire


  Continuing movement of very hot magma or molten materials under the ground

  
• The countries included in the Pacific Ring of Fire is home to approximately 75% of the world's active volcanoes

  
• Formation of igneous rocks

  1. Heat within the Earth causes rocks and other materials to melt forming magma

  2. When magma rises during volcanic eruptions, some of the magma does not reach the surface of the Earth but instead slowly cools and hardens forming different kinds of igneous rocks
• Metallic mineral deposits


  Copper, gold, silver, lead, and zinc are usually mined from deep within the roots of extinct volcanoes or those volcanoes with no record of eruption for the last 10,000 years and are not expected to erupt again in the future
• Uses of metals


  • Copper for making electrical wires
  • Iron for making steel bars for buildings and construction of roads
  • Tin for milk cans
  • Nickel and copper for stainless cooking wares
  • Gold for jewelry
• Metals are nonrenewable resources, but people use them without limits because of the economic gain brought by these metals
• Renewable energy resources


  • Solar energy
  • Geothermal energy
  • Hydropower
  • Wind energy
  • Biomass
• Nonrenewable energy resources


  Coal, crude oil, natural gas, and other fossil fuels
• Approximately 88% of our energy consumption is taken from nonrenewable energy resources while only 12% of the energy consumption accounted for renewable energy resources
• Oil and coal were listed as the primary sources of energy in the country
• Nonrenewable energy resources are exhaustible and once consumed entirely, it will take millions of years to replenish them
• With the high potential for cheap and clean energy from renewable resources, it is important that these alternative energy resources be explored to supply our energy needs before it becomes too late
• Sustainable use of natural resources


  The practice of using the earth's resources in a responsible manner that will allow the resources to be available for the present and future generations
• Practices that promote sustainable use of natural resources

  1. Practice the 5Rs (Refuse, Reduce, Reuse, Recycle, Recover)

  2. Save energy by conserving energy

  3. Use renewable energy resources instead of fossil fuels
• As our population grows, the number of people using the earth's resources also increases, putting a huge strain on the planet's ability to replenish the consumed resources
• Unsustainable lifestyle practices that deplete natural resources include food waste, overfishing, clearing of forests, and overuse of single-use or disposable plastic bags and packaging
• Reforestation


  • Planting new trees in denuded forests to keep forests standing and provide lumber, food, water, and carbon storage
• Renewable energy sources


  • Sun's heat, wind power, flowing water, and geothermal heat - they are clean, renewable, and abundant in the Philippines
• Waste management


  Practicing the 5Rs (Reduce, Recycle, Reuse, Refuse, Recover) to reduce demands for new resources and lessen waste materials
• Without the earth and its resources, humans will not survive. The earth has a recycling and cleansing system, but this has limits, so we need to use resources sustainably and manage our waste responsibly
• Burning of plastics to reduce wastes


  • NS
• Using buckets of water instead of showers

  • S