the first and upper most layer of the Earth. There is Continental Crust which sits on top of Oceanic Crust. This layer is made frequently from granite rocks and is solid. Continental Crust is approximately 32km. Below the Continental Crust is Oceanic Crust. It is about 8km. This part of the Crust is made from basalt rocks. The Crust is most of lithosphere and is the coolest layer by far. Mantle is like silly putty consistency. It is the largest layer of Earth sitting under the Crust. It is made
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Life on Mars and Life on Earth • Life on Earth - Right spot‚ suitable for life - Size of earth has allowed the internal heat from leaking too rapidly - Plate tectonic activity and bulkinism helps maintain and recycle carbon dioxide which helps prevent the earth from freezing - The magnetic field from the inner core maintains heat at a certain level protecting earth - Within the atmosphere‚ there exists hydrogen‚ water‚ methane and ammonia - These gases are subject to lightening and
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Atmosphere Homework Describe the composition of the air Air is a mixture of gases and aerosols that compose the atmosphere surrounding Earth. The primary gases of air include nitrogen (78%) and oxygen (21%). Trace gases and aerosols make up the remaining 1% of air. The trace gases include the noble gases argon‚ neon‚ helium‚ krypton and xenon‚ hydrogen and the greenhouse gases. The aerosols are solid or liquid particles having diameters in the region of 0.001 to 10 microns‚ and include dust
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August 8‚ 2013 Peopling of the Earth The earliest full human species known today lived in East Africa about 2.5 million years ago. Early humans survived by hunting and gathering. With an economy based on hunting and gathering‚ there is a great deal of space needed for just a small community. Before migrating majorly‚ they migrated to the Levant‚ in about 25‚000 years ago a global freeze happened and it wiped them out completely. They would then later end up migrating to the Middle East from Africa
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Table below shows the layers of the Earth : Layer Composition Depth Properties Crust Oceanic crust Continental crust Basalt Granite 7-10 km 20-70 km Cool‚ rigid‚ and brittle Cool‚ rigid‚ and brittle Lithosphere Lithosphere includes the crust and the uppermost portion of the mantle Varies; the crust and the mantle have different compositions About 100 km Cool‚ rigid‚ and brittle Mantle Uppermost portion of the mantle included as part of the lithosphere Asthenosphere
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working for too long time and rise their wage of month. FDR wanted to rebuild pubic trust in American financial system through the Emergency Banking Act and Federal Deposit Insurance Commission. The New Deal is a comprehensive program which is about how to relief‚ recovery‚ and reform Americas. He also made policy deal with public utilities‚ housing industry‚ and transportation to develop American democratic economy. In 1933‚ FRD made <> to recover American industrial‚ then he build dam‚ nuclear power
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Life on Earth. 1. Analysis of the oldest sedimentary rocks provides evidence for the origin of life. * Identify the relationship between the conditions on early Earth and the origin of organic molecules. * Scientists estimate that the universe is 10-20 billion years old and arose as a big bang‚ which is still expanding the universe. * The early Earth was very different from the Earth today and no oxygen was present. This means that there was no ozone layer exposing the Earth’s surface
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HOW DO SUNSPOTS AFFECT US ON EARTH?? Sunspots usually travel in connected pairs. The surface of the sun can reveal small dark areas that vary in numbers and location. Sunspots even tend to cluster in bands above and below the equator. Sunspots are darker than the rest of the sun because they are lower in temperature and release less energy than the areas surrounding them. Sunspots largest number recorded is about 200. Sunspots last for several days. Even though the largest ones can last for so many
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Slogans on Save Environment 1. Get into the Green Scene 2. Cool kids help a warm planet 3. Trees don’t grow on money either 4. Water‚ water everywhere but not a drop to drink 5. Join the race to make the world a better place 6. Save water! Save Life! 7. It’s the only Earth we got 8. When you conserve water‚ you conserve life! 9. A drop of water is worth more than a sack of gold to a thirsty man 10. One tree can make a million matches. One match can destroy a million trees. 11. Save water‚
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At Home • Adjust Your Water Heater – By turning your water heater down to 130 degrees Fahrenheit‚ you can save energy. • Clean Your Fridge – Refrigerators use a tremendous amount of energy every year. To cut down on waste‚ clean the condenser coils every year. Also‚ do not keep the temperature unnecessarily low. • Recharge Your Batteries – If you recharge your batteries‚ you will save money and help stop multiple environmental problems. You can prevent potentially hazardous metals from getting
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