water water everywhere n.
Skip this Video
Loading SlideShow in 5 Seconds..
Water, Water Everywhere PowerPoint Presentation
Download Presentation
Water, Water Everywhere

Water, Water Everywhere

715 Views Download Presentation
Download Presentation

Water, Water Everywhere

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Water, Water Everywhere By: A 9th grade student Menu

  2. Menu Introduction Water In Organisms Water As A Solvent Water As A Way Of Transport Water As A Reactant Water As A Way Of Support Water As A Lubricant Water In Sexual Reproduction Water For Constant Temperature Water As A Habitat Marine Ecosystems Freshwater Ecosystems Marine Life During Winter Watersheds EPA Clean Water Act What A Normal Person Can Do Bibliography Exit NOTE: Only use buttons to change slides!!! Words come automatically!!!

  3. 2/3 of the globe is covered in water. 2/3 of all cells contain water. Water is the only substance in world to be found naturally in all 3 states. (Solid: Ice, Liquid: Water, Gas: Water Vapor. Water freezes at 0C and boils at 100C. Introduction Menu

  4. Organisms usually contain 60% to 90% water. Lowest- Plant Seed (20%) Highest- Jellyfish (99%) Water helps all organisms with metabolism, and specifically helps plants with photosynthesis and support. Water In Organisms 20% Water 99% Water Menu

  5. Water contains 1 oxygen atom and 2 hydrogen atoms. The atoms are covalently bonded. The water molecule is said to be polar, because electrons are not equally shared. Because the water molecule is polar, it can ionize substances easily, making it a good solvent. Water is know as ‘The Universal Solvent’. Water As A Solvent Menu

  6. Many different substances, such as blood and sap, are transported by water. Sap and blood contain high amounts of water making them good solvents. Being good solvents allows them to dissolve the substances they are transporting. Water As A Way Of Transport Tree Sap Human Blood Cells Menu

  7. Water, being a good solvent, allows many reactions to occur. Water is used in photosynthesis to make NADPH2, and ultimately sugar. These reactions release oxygen gas, which is vital to human life. Without water in photosynthesis, organisms would not be able to obtain energy, and life as we know it would be impossible. Water As A Reactant Menu

  8. When water enters the cell by osmosis, the water fills up the cell so much that the cell prevents other water intake. This makes the cell turgid, or stiff. The cell must be turgid to support the plant’s leaves. Also, organisms that live in the water have weaker skeletons than organisms that live on land because of the water’s buoyancy effect. Water As A Way Of Support Menu

  9. When bones meet at a joint, they need a fluid between the bones to prevent scraping against each other. That fluid is called a synovial fluid, which is made mainly of water. Many internal organs have fluid around them to keep them protected. Examples: Brain: Cerebro-spinal fluid Lungs: Pleural Fluid Eyes: Mix of fluids. Water As A Lubricant Synovial Fluid Menu

  10. During fertilization, the male sex cell, the sperm, must get to the female sex cell, the ovum in order to make the zygote, which makes a new individual. In organisms adapted for internal fertilization, the sperm is transported in semen which contains mostly water. In organisms using external sperm can be transported in the water habitat. Water In Sexual Reproduction Sperm Cells Menu

  11. Water For Constant Temperature • Water has a very high specific heat. (4200J/kg0C) • That means much energy is required to change the temperature of water by a single degree. • That provides a perfect habitat for marine mammals, because of the non-changing temperature. • Another way water helps mammals maintain their body temperature is by sweating. • Mammals sweat when their body temperature is too high. • Sweat is made of mostly water. • When the water evaporates from the organism it creates a cooling effect, therefore lowering the organisms body temperature. Menu

  12. Here are some good reasons why water is a good habitat: Water can provide a good protective layer for organisms in it. Water provides buoyancy and support for organisms in the water. Dissolved oxygen can be plentiful in water, for use in respiration. Fertilization is easier in water. Water helps maintain a constant temperature. Water keeps out UV rays from the sun. Water As A Habitat Menu

  13. Marine Ecosystems There are 6 zones of the marine ecosystem: • Intertidal- near shore, few organisms; empty of water at low tide. • Coastal- contains 98% of marine life; continental shelf is bottom of coastal zone. • Oceanic- farthest away from major land masses. • Euphotic- enough light for photosynthesis; 100-200m deep. • Bathyal- 2000m deep; continental slope ends. • Abyssal- bottom layer; coldest and darkest, least life. Marine ecosystems are important in the following ways: • Rich source of food and jobs • Areas such as saltmarshes provide protection from storms. • Filters runoff from land. Menu

  14. Freshwater Ecosystems Freshwater ecosystems are split into 2 zones: • Limnetic- light can penetrate; most plants live there • Profundal- light cannot penetrate; many fish live there There are also 2 types of freshwater ecosystems: • Eutropic- full of nutrients and light; many types of fish live there • Obliogotrophic- Not as abundant with nutrients; fewer organisms live there. Freshwater ecosystems are important in the following ways: • Hydroelectric power • Products and commerce • To put out fires Menu

  15. Marine Life During Winter • The solid form of water (ice) is actually less dense than the liquid form which is water. • This is very unusual. • Water has its highest density at 4C. • That means that at the bottom of a body of water the water will usually be at least 4C. • This allows aquatic organisms to be able to live, even in the winter. Menu

  16. Watersheds are streams, rivers, and lakes that water drains into. South Carolina is divided into eight major watershed areas: Broad Catawba Santee Pee Dee Saluda Edisto Savannah Salkenhatchie Watershed pollution can be determined by how the land is used. (Columbia: Industrial, Ladson: Farming) Watersheds Menu

  17. EPA stands for Environmental Protection Agency. In 1977, a law was made called the Clean Water Act. The act sets water qualities levels for all surface waters. The act made it illegal for a person to pollute navigable waters from a point source. (Meaning a source from which it is known.) It also raised money to build sewage treatment plants. EPA Clean Water Act Menu

  18. What A Normal Person Can Do There are many things an average person can do to help keep the water clean: • Keep debris out of gutters and drains. • Only use small amounts of lawn and garden chemicals. • Do not dispose of pet litter or paints into gutters or drains. • Have septic tank checked every 3 to 5 years. • Keep soil erosion on your property low by planting grass. IN DRAINS Menu

  19. Bibliography Illustrations and Music: Music: Soul Thang – Slide 1: Water In Nature – Clip Art (Search: Water) Slide 2: Menu – Clip Art (Search: Menu) Slide 3: Earth- BROWSE/earth_1.html Slide 4: Plant Seed- plant/search_seed.html Jellyfish- monterey-aquarium-jellyfish-29 Slide 5: Molecule- botimages.html Slide 6: Tree Sap- blog/archives/2004_04.html Blood Cells- cells/animal_cells.htm Slide 7: Photosynthesis- events/TeacherTECH_2005/ Slide 8: Osmosis- 1watertransportrev4.shtml Slide 9: Joint- quick_pics/capsule01.html Slide 10: Sperm Cells- pictures/nature/embryo/ Slide 11: Specific Heat- 770lecwatersalt.htm Slide 12: Marsh- nature_en.html Slide 13: Coral Reef- 2000thai-sympo/2000sympo-e.html Slide 14: Pond- Arbor-Day/996~2003/index.asp Slide 15: Iceberg- antarctica_fp.htm Slide 16: SC Watershed- papers/2000_tcs_paper.htm Slide 17: Paint Can - Pet Litter - Slide 18: Man in River- chairman.htm Internet and Book Sources: Slide 3: Slide 4: Slide 5: Slide 6: Slide 7: Slide 8: Side 9: Side 10: Slide 11: Slide 12: Slide 13: Slide 14:\ Slide 15: Slide 16: Post and Courier Supplement Slide 17: Slide 18: Post and Courier Supplement Menu

  20. Exit NO YES Menu