Water Systems

• Why does soil hold the most water?

  A large surface area allows a soil to hold more water
• States of water


  • Liquid
  • Gas
  • Solid
• Changes of state


  1. Evaporation

  2. Condensation

  3. Precipitation

  4. Percolation

  5. Tranpiration
• How does the water cycle naturally purify water?

  When going through evaporation it leaves all the pollutants in the clouds during condensation. So during condensation and evaporation
• How does a large body of water such as a lake or an ocean affect the temperature in a city nearby?

  In the winter the water is going to be warmer and in the summer they will have cooler summers. It takes longer to heat up then to cool down
• pH range of acids

  • Carbonated H2O
  • Lemon juice
  • Vinegar
• pH range of bases

  • Distilled H2O
  • Bleach
  • Liquid soap
  • Tap H2O
  • Baking soda
• What causes acid rain?

  The 2 gases that cause acid rain are sulfur dioxide, water and carbon dioxide. A low pH would also cause acid rain.
• What can be done to prevent acid rain?

  Filtering air pollution in cars or in factories
• Why do ocean currents form?

  Cold water sinks because it's more dense when warm water rises because it's less dense. As cool water sinks it pushes the warm water upward causing a current.
• How do currents help organisms that live in the water?

  Convection currents are important because they move nutrients from one area to the other. For example, oxygen from the air enters the top layer of water and is brought to organisms in deeper water by currents.
• Why do we need to be careful with our water supply?

  It is a limited resource
• How can we reduce our water consumption?

  1. Take shorter showers

  2. Not leave the water on when brushing teeth

  3. Don't just dump water down the drain
• What is percolation?

  When the water gets absorbed into the ground