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Planet Earth
- 1. Planet Earth Environmental Science
- 2. Planet Earth PlanetEarth is the _____ planet from the sun. 3rd We live on a unique planet in that it may be the only one in our solar system that has life on it. What do you think? Are we alone?
- 3. Living Creatures Livingthings are called? Organisms
- 4. Question Do organismsinteract with non living components on the Earth? Examples: 1.Respiration 2.Water breaks down components 3.Rocks and Minerals for building/ tool making
- 5. Non-living components ofEarth Are? Lithosphere Hydrosphere Atmosphere
- 6. The lithosphere ……Land on the Earth’s surface The hydrosphere………….. That part of the Earth made up of water The atmosphere………… Air that surrounds the Earth
- 7. What characteristics makeit possible for life to exist on the Earth? 1. Liquid water Why is it important?? Organisms are mostly water. Nutrients need to be dissolved in water to be used Most chemical activities occur in water.
- 8. What else iswater needed for 2. To store heat Where is this going to happen? OCEANS
- 9. What characteristics makeit possible for life to exist on the Earth? 1. The atmosphere Why? Maintain a steady temperature Gases are used by organisms
- 10. 2. The sun… All energy comes from the sun What characteristics make it possible for life to exist on the Earth?
- 11. Animals use _____________to carry out the process of _______________________ to make ______________. oxygen respiration energy
- 12. Plants use _____________to carry out the process of _______________________ to make ______________ from sunlight. CO 2 photosynthesis energy
- 13. Do plants needoxygen to make energy? Yes Plants use oxygen to make energy for them to grow and develop
- 14. The interaction betweenliving and non-living parts of the Earth are the subject of: ECOLOGY
- 15. The lithosphere ismade of three types of rocks: Igneous – liquid or molten rocks Sedimentary – layers of sediment accumulate and are compacted or cemented Metamorphic – formed under intense heat and pressure.
- 16. The atmosphere Whatgases make up the atmosphere? Nitrogen – 78% Oxygen – 21% Carbon dioxide - .04% The rest includes: water vapor, dust, argon
- 17. Where does theCO 2 come from? Released from volcanoes. Produced when burning fossil fuels.
- 18. Air pressure is……..Greatest at sea level. 14.7 lbs/in 2 Becomes less as you gain altitude.
- 19. Atmospheric layers Thermosphere - highest Mesosphere Stratosphere Troposphere – nearest the Earth
- 20. Troposphere Weather occurshere Most of the Earth’s water vapor and gases are here
- 21. Stratosphere Ozone layerhere O 3 you smell this after a thunderstorm Jet stream – weather controller
- 22. Mesosphere Meteors burnup here Coolest layer
- 23. Thermosphere Contains theionosphere Ions become trapped and glow causing the northern lights Temperature is 2,000 0 C – air molecules are very far apart.
- 24. Hydrosphere 97 %of the water on the earth is? Salt water Of the remaining water 2% is locked in ice. This leaves only 1% as usable freshwater.
- 25. Ocean water Is35 ppt of salt Meaning 35 solid parts of salt for every 1000 parts of sea water. The major salt is NaCl
- 26. Freshwater Stored in:lakes, ponds, streams, rivers Ground water
- 27. Ground water Iscarried in porous rock (permeable) called an aquifer Ground water can reach the surface by way of a: spring
- 28. When ground waterbecomes “sandwiched” between two layers of impermeable rock and the rock above cracks, water can reach the surface by way of an oasis or artesian well.
- 29. Question Can rainre-fill the aquifers as fast as people can pump the water out? In most cases NO !!!!!!!!!!!! Most surface water runs off and continues to the ocean
- 30. Biosphere………… All partsof the Earth that contains and supports life….. Most life prefers to live between 500 m. deep in the ocean to 6 km above sea level.
- 31. Energy Flow SunlightBiosphere plant and animal use Lost as heat To space
- 32. Changes in thebiosphere Affect organisms If we raise or lower the temperature of ocean water….. Volcanic eruptions can……….
- 33. Organisms can changethe biosphere What happens when a beaver dams a stream? Make a list of all the things that could happen. The biosphere is a very complex network