SlideServe
Télécharger Obtenir Pro
Menu
Accueil Pro
Préférences
ApparenceLight Aide et commentaires
© SlideServe · v2026

Using Water Wisely Chapter 11 section 4

padma avatar
padma
15 diapositives · 459 Views · Jul 30, 2014

Using Water Wisely Chapter 11 section 4. S6E5.i Describe methods for conserving natural resources such as water, soil, and air. You will be able to ……………….………… Identify two forms of water pollution Describe two ways that wastewater can be treated.

Using Water Wisely Chapter 11 section 4 - slide 1
01 / 15Using Water Wisely Chapter 11 section 4
1 / 17

Télécharger la présentation

Using Water Wisely Chapter 11 section 4
Une image / un lien ci-dessous est fourni (tel quel) pour télécharger la présentation

Politique de téléchargement : le contenu du site vous est fourni TEL QUEL pour votre information et votre usage personnel ; il ne peut être vendu, concédé sous licence ni partagé sur d’autres sites sans l’accord de son auteur.Le contenu vous est fourni TEL QUEL, pour votre information et votre usage personnel uniquement. Téléchargez la présentation en cliquant sur ce lien. Lors du téléchargement, si vous ne parvenez pas à télécharger une présentation, l’éditeur a peut-être supprimé le fichier de son serveur.Pendant le téléchargement, si vous ne parvenez pas à obtenir une présentation, le fichier a peut-être été supprimé par l’éditeur.

F I N

Plus de contenu associé

Transcription de la présentation

  1. Using Water WiselyChapter 11 section 4 S6E5.i Describe methods for conserving natural resources such as water, soil, and air.

  2. You will be able to ……………….………… • Identify two forms of water pollution • Describe two ways that wastewater can be treated. • Describe how water is used and how water can be conserved in industry, in agriculture, and at home.

  3. While hiking, you realize your canteen is almost empty. Why should you not fill the canteen with water from the nearby stream? Even though the water may look clean, it might contain pollutants or bacteria.

  4. Water Pollution • What is pollution? • Where does the waste come from? • The introduction of harmful substances into the environment. • Cities, factories, and farms

  5. Point-source pollution • It comes from a specific site. • It can be controlled because its source can be identified.

  6. Nonpoint-source pollution • It comes from many sources. • Reaches bodies of water by runoff. • Examples: street gutter, fertilizers, eroded soils, salts from irrigation. Hardest to Control

  7. Health of a Water SystemProperties of water influenced by water quality? • Dissolved Oxygen (DO) – this is the oxygen that is dissolved in water. • Levels below 4.0 mg/L in can cause stress and death for organisms in the water. • Sewage, fertilizer runoff, and animal waste can decrease DO levels. • thermal pollution (increase in water temperature) causes a decrease in DO levels. Ex: nuclear power plants • Cold water holds more oxygen than warm water

  8. Nitrates are naturally occurring compounds of nitrogen and oxygen. • Small amounts normal, elevated harmful • Lower DO levels • Examples: animal wastes or fertilizers that seep into groundwater.

  9. Alkalinity refers to the water’s ability to neutralize acid. -too much acid (ph below 6.0), harmful to organisms living in water.

  10. Cleaning polluted water • Sewage treatment plant • A facility that cleans the waster materials found in water that comes from sewers or drains. • Septic Tank • A large underground tank that cleans the wastewater from a household by separating solid waster from liquids. • Bacteria breaks down the solid waste.

  11. Where is water used? Home Average 100 gal per day Industry 19% Agriculture

  12. Ways to Conserve water>>>>>>Only use water that is needed<<<<<< • Industry: recycle water • Agriculture: drip irrigation system • Household: low-flow shower heads and low-flush toilets, time your showers, only wash dishes and clothes when there is a full load.