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Planet Earth

Transcript: Science Project By:Michael Sawers 7N/K Original Remains is a type of fossil that has unchanged remnants of plants or animals. Some examples are: - Organisms being frozen in ice. - Organisms being trapped in sap, which later turns into Amber. - Bones, or teeth. Below is a picture of a mosquito trapped in sap, which is now amber- The Golden Toad, Also Known As- Bufo periglenes, is an extinct animal that was found in the wonderful location of Costa Rica! It is often thought that the golden toad was wiped off of the earth because of Global Warming, but scientists say it was caused by something called EL NINO, which causes severe dryness. It lived in the Phanerozoic Eon, the Cenozoic Era, the Quaternary period, and the Holocene Epoch. It was last seen on May 15, 1989. Coal? Tell me more! THE HYDROSPHERE is the layer of water on a planet in a solar system like rivers, lakes and oceans. Many people think it is only in the form of water, but it is also in the forms of vapor and ice! On earth, the hydrosphere is found on the surface of it, underground and in the atmosphere. CONTINENTAL DRIFT IS CAUSED BY convectional currents moving the tectonic plates in various positions. There is also evidence for continentall drift because of the continents being able to fit together, and of fossils being found on different continents instead in their natural places and why they wouldn't have been in other places. For example, there were animals that were able to swim in salt water, but only stayed in one place! I love lustre...what is it again? Planet Earth A massive earthquake that took place in 1868, measuring a 7.9 on the Rictor Scale, killed 77 people, 46 of which from the Tsunami, and 31 from landslides took place in the KA'U district on the Island of Hawaii. The Tsunami that resulted from the earthquake measured up to 15 meters! Chemical Weathering, or Biological Weathering, is the effect on rocks, soil and minerals from chemicals found in the atmosphere. To the right is the result of recent acid rainfall on an umbrella plant. The Original Remains of what? THE MAUNA LOA TAKES UP HALF OF THE HAWAIIAN ISLAND THE BIG ISLAND! IT FIRST EXPLODED IN 1843, AND IT'S LAST ERUPTED WAS IN 1984! no one has died from the last eruption because evacuation took place beforehand. Extinct animal: The Golden Toad Metamorphic Rocks are 1 of the 3 main rocks in the rock cycle. They are rocks that have changed shape or form by undergoing heat and pressure. An example of a metamorphic rock is a schist. Schist can be formed from basalt, shale, or slate! Schist Mauna Loa Erupts! Lustre is the way that light is relfected off of a rock, crystal or mineral. There are different types of lustre, like metallic, pearly and silky lustre! Hawaii's Largest Earthquake Shakes Citizens The Kanaskis Range in Alberta,CAN. On this range, peaks are named after ships and people who were in the naval battle of Jutland. The Mauna Loa Volcano! Coal is the largest electricity producing energy source in the whole world! Coal is mostly made up of Carbon, and can be found in many places of the world. It is most abundant in China, which in 2010, had produced 3.162 billion tons of coal! IT'S MORPHING TIME! The Kanaskis Mountain Range! HYDROSPHERE! WHAT'S THE REASON FOR CONTINENTAL DRIFT? What do you mean, Chemical Weathering?

Planet Earth

Transcript: By: Mauro Di Fazio the radius of the earth is 6.371 km It takes the Earth about 365.25 days to complete its orbital period the .25 add up every year and after 4 years we experience a leap year It takes the Earth 24 hours to complete one rotation the mass of the earth is 5.9 sextillion tons the mean density is 5.515g/cm cubed The Earth is tilted about 23.5 degrees on its axis and this is why we have seasons the average surface temperature of the Earth is about 14 degrees Celsius or 57.2 degrees ferinheight. A Magnetic Field does exist on Earth This Magnetic field protects the Earth from Solar wind. It is located at the North and South Poles there are weak points in the magnetic field and they are located at the North and South Poles because of these weak points at those spots you can see what is called the Northern Lights or Aurora Borealis and the Southern lights or Aurora Australis it is created by the solid inner core of the Earth that is composed of iron and is 2/3 the size of the moon it is surrounded by an outer core composed of Nickel, Iron as well as other small quantities of other metals low pressure causes the metals here to be liquids This flow of liquid generates an electrical current, which produces a magnetic field the Eccentricity of the Earth is 0.0167 The Earths Atmosphere is composed of 78% Nitrogen The Earth is capable of sustaining life we have an ozone layer that provides us with oxygen and allows us to breathe also we get sunlight from the sun and this allows plants to grow and go through photosynthesis which provides oxygen for us There are 3 parts to the internal structure of the Earth next there is the mantle. It has different temperatures at different depths. the temperature is the most intense near the core, and is less intense right under the crust. the rocks in the mantle are split into 2 zones rocks in the upper mantle are cool and brittle, these rocks break under stress and this causes earthquakes rocks in the lower mantle are hot and soft, but they are not molten. on top of the mantle is the crust and there are 2 different types Oceanic Crust is thicker than continental crust composed mostly of basalt Continental Crust is composed primarily of granite the low density of this crust allows it to float 70% of the planet is covered in water and the remaining 30% is land there are 7 continents and they are North America South America Africa Asia Australia Europe Antarctica it has a chain of volcanoes known as the Pacific Ring of Fire. It has 425 active volcanoes Thank you for listening and hope you enjoyed my presentation (cc) photo by medhead on Flickr and 1% of other gases it has one Moon the average distance of the Earth from the sun is 150,000,000 kilometers or 1 AU About 21% Oxygen The gravitational force of the Earth is 9.81m/s squared Earth (cc) photo by medhead on Flickr the core is separated into different zones the inner core is completely solid, and the outer core is liquid The Core- is the Earths source of heat because it contains radioactive materials which release heat as they break down

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planet earth

Transcript: photo credit Nasa / Goddard Space Flight Center / Reto Stöckli history Earth has very mild climate compared to the other planets in our solar system the lowest recorded temperature was -128.6 f the highest recorded temperature was 134 f and the average temperature is about 59 f. On earth there is actually rain do to large amount of open water and warm climate Earth's atmosphere is a mixture of different elements it is mainly nitrogen and oxygen. But to be exact the atmosphere consists of 78.08% nitrogen, 21.95% oxygen, and about 1% trace gases. Earth's composition is 35% iron, 30% oxygen, 15% silicon, 10% magnesium, and 10% other elements. solar system Earth is the third planet planet from the sun and and the second to last terrestrial planet. It is exactly 1 AU or 149,567,871 km from the sun. The time it takes to revolve around the sun once is equal to 365 days. The time it take for a revolution is equal to 24 hours, the earth has a equatorial circumference of 40,075 km surface conditions explration rings Earth has one moon formally known as Luna not "the moon". It is the fifth largest satellite in the solar system and is the second largest moon in the solar system right behind Lo which is one of Jupiter's moons moons There has never really been a satellite that was sent up above earth to explore earth,but there are satellites that orbit the earth , these include gps satellites, surveillance satellites and even communications satellites Earth has no rings unless you count the junk ring that is starting to form from all the space junk orbiting the earth Earth has never been truly discovered unless you count the man who came up with the idea that earth is a spherical body in space that revolves around the sun. That man was Nicolaus Copernicus, he made his famous discovery in Poland in about 1508 AD. Earth got it's name from a german word "erda"which meant ground composition and atmosphere

Planet Earth

Transcript: Planet Earth How Earth got its name? Earth got it's name by a old English and Germanic, Earth is a English German name which means the ground. Do you ever wonder if Earth has any Moons? Earth only has one moon and its called Moon. What the Atmospheric make up? What the surface is like? The atmospheric makes up 36.4% of Iron,29.5% of Oygen,15.2% of Silicon,12.7% Magnesium,2.4%Nickel,1.9% Sulfure,and 0.05% Titanium. The Surface is like made up of rocky land and water, earth is made up of 70% of water, and thereis also plains,mountain ranges,and rocky lands. What is its mass? Diameter? Mass:5.972e24kg Diameter:12,756.3km How long does it take to orbit the sun? How long does it rotate one full turn? To orbit the sun it takes 365.244 days. To rotate one full turn it takes 23hours,56minutes,and 4.09 seconds. What is the coldest tempature? -89.2 degress Celsius What is the hottest tempature? Why do the poles on this planet receive certain amounts of sunlight and daylight? In the daylight we can experince that it would be greater in the Northern Hemisphere in June, but less in the Southern Hemisphere on December. The Southern Hempisphere will recieve longer days. In the sunlight the Northern Hemisphere is tilted away from the sun, but the Southern Hemiphere is tilted away. The Northern Hemisphere is experencing summer while the Southern Hemisphere is experencing winter. While the Earth is still going around the sun through the year, then it will change like the Southern Hemisphere will be towards the sun while the Northern is tilted away thats when souhtern is experencing summer and Northern is experencing winter. Why dont we see a lot of craters on Earth? The reason we dont see a lot of Craters is becasue of Erosion and Tectnic they start to process destroying and recreates most of the Earths surface. Most of all traces of the earlier geolgic surface history such as the impact of Craters. How Earth's rotation,tilt and orbit affect our seasons? When the Earth orbits the sun is goes counterclock wise motion, when the Earth rotates on the axis is going at angle of 23.4 degress. When the Earth is tilted on the axis the sun gives light on the earth on one side, but on different sides then it goes on to the other side and so on. What are the dates of each seasons? Autumn begins when the sun is directly above on the equator which starts on September 20th,or21st. Winter begins when the sun is directly above the tropic of Capricorn on December 20th or 21st. Spring begins when the sun is directly above the equator on March 20th or 21st. Summer begins when the sun is directly above the tropic of Caner on June 20th or 21st. Define Solstice,Equinox Solstice: When the sun is at its greatest distance from the Celestial equator. Equinox: When the sun crosses the plane of Earth's equator also with the day and night of equal lenghts. Both Solstice and Equinox have different lenghths of daylight.

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