Presentation on theme: "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."— Presentation transcript:
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 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 Earths cleanliness?
4 Main Benefits of water on Earth Thermal Stress Protector UV Protection Food /Nutrient Supplier Protection from gravity
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.
UV Protection Water absorbs DEADLY UV RADIATION Refracts UV light into harmlessblue that we commonly associate with the Ocean UV radiation can kill cells and destroy DNA the molecule of life
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
Protection from Gravity Animals in water are neutrally buoyant No gravity affects themno need for strong muscles or bones Gravity effects extremely limited which also allows animals to achieve massive sizes that could not exist on land
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!!
Facts: 71% of Earth is covered by water 29% Terrestrial Surface 3% of water is Fresh 97% of all water is salt water
Water in Ice caps completely frozen all year round Making ground water the largest supplier of the worlds FRESH WATER!
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.
4 UNINQE PROPERTIES UNIVERSAL SOLVENT- can dissolve most anything : SOLUTE –Thing thats dissolved (salt) SOLVENT- Does the dissolving (water) EXPANDS WHEN FROZEN (ice floats) SURFACE TENSION- Water moleculesstick together, CAPILLARY ACTION- Water defies gravity as polar charges allow water to move up through items
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?