1 / 15

WHY STUDY WATER ???

WHY STUDY WATER ???. Water. You will be able to explain how and why water is so important to life on Earth. You will understand and explain the properties which water possesses that enables life to exist and where we find water. Activation Questions.

kalkin
Télécharger la présentation

WHY STUDY WATER ???

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WHY STUDY WATER ???

  2. Water You will be able to explain how and why water is so important to life on Earth. You will understand and explain the properties which water possesses that enables life to exist and where we find water.

  3. Activation Questions • How are trees plants able to “pump” water to the top, without having a heart or pump to move the water? • How is water different from other compounds as Carbon-dioxide, Methane, and Ammonia? • How will knowing this make you change your attitude regarding Earth’s cleanliness?

  4. 4 Main Benefits of water on Earth • Thermal Stress Protector • UV Protection • Food /Nutrient Supplier • Protection from gravity

  5. Thermal Stress Protector • Temperature differences between night and day and seasons, differ little in water as compared to land environments • Water in day absorbs sunlight, thus preventing Earth from getting too warm • Night releases heat preventing Earth from getting too cold • This action creates wind and weather patterns as well which distributes water on land.

  6. UV Protection • Water absorbs DEADLY UV RADIATION • Refracts UV light into harmless “blue” that we commonly associate with the Ocean • UV radiation can kill cells and destroy DNA the “molecule of life”

  7. Food/Nutrient Supplier • All food and nutrient items necessary for life can be dissolved in water, thus making it easy for simple animals to get needed nourishment from just floating in water • More advanced animals still use water based circulation systems to carry nutrients to their cells • Food also can be provided in 3 dimensions allowing for easy capture

  8. Protection from Gravity • Animals in water are neutrally buoyant • No gravity affects them—no need for strong muscles or bones • Gravity effects extremely limited which also allows animals to achieve massive sizes that could not exist on land

  9. Where is the water • Earth is considered a hydrosphere or planet composed of water • Water makes up for 98% of all inhabitable places on Earth to live!!

  10. Facts: • 71% of Earth is covered by water • 29% Terrestrial Surface • 3% of water is Fresh • 97% of all water is salt water

  11. Water in Ice caps completely frozen all year round • Making ground water the largest supplier of the world’s FRESH WATER!

  12. 3 STATES of WATER • Solid- Ice, snow, sleet, glaciers, icebergs, ice caps • Liquid- Water, rain, oceans, seas, lakes, rivers, groundwater • Gas- Water Vapor, steam, clouds • WATER IS A UNIQUE COMPOUND IN THAT IT IS COMMONLY FOUND IN ALL 3 STATES OF MATTER.

  13. 4 UNINQE PROPERTIES • UNIVERSAL SOLVENT- can dissolve most anything : SOLUTE –Thing that’s dissolved (salt) SOLVENT- Does the dissolving (water) • EXPANDS WHEN FROZEN (ice floats) • SURFACE TENSION- Water molecules“stick” together, • CAPILLARY ACTION- Water defies gravity as polar charges allow water to move up through items

  14. Review • 4 Benefits Earth gets from water? • 4 Unique traits of water? • How is water distributed on Earth? • How would life on Earth CHANGE if more or less water was in its liquid state? • How does knowing this information CHANGE your opinion on water?

More Related