natural resources

• What are non-renewable resources?

  Resources that cannot be replaced in a short period of time because they take millions of years to form.
• Give an example of a non-renewable resource.

  Fossil fuels (Petroleum, Coal, Natural gas)
• What are renewable resources?

  Resources that can be replaced naturally within the time the supply is being used.
• Give an example of a renewable resource.

  Air
• What are the two types of natural resources?

  • Non-renewable Resources
  • Renewable Resources
• What is a watershed?


  An area of land on a slope which drains its water into a stream and its tributaries.
• What percentage of Earth's surface is made up of land?

  25%
• What is soil made up of?

  45% mineral matter, 25% water, 25% air, and 5% organic matter.
• What processes act together to continuously form soil?

  • Weathering
  • Temperature changes
  • Rainfall
  • Chemical changes
  • Biological action
• What is weathering?

  The breaking down of rocks into smaller pieces by natural resources.
• Name some metallic resources.

  Gold, copper, iron, chromite, nickel, cobalt, and platinum.
• Name some non-metallic resources.

  Sand and gravel, limestone, marble, clay, and other quarry materials.
• Why is the Philippines rich in mineral resources?

  Because it is located in the Pacific Ring of Fire, which is associated with over 450 volcanoes.
• What is the Pacific Ring of Fire?

  An area associated with over 450 volcanoes and approximately 75% of the world's active volcanoes.
• Why is the Philippines called an archipelago?

  Because it is a group of islands surrounded and separated by oceans and seas.