Geomagnetism “The Earth's geomagnetic field is a combination of several magnetic fields generated by various sources superimposing on each other.” According to the Hong Kong Observatory. It says that “more than 90% of the field is generated by the movement of conducting material inside the Earth's core, which is often referred to as the Main Field”. The Geomagnetic field is used to explore the Earth’s inner core and the environment. The Earth’s geomagnetic field affects sea turtles. It affects them by leading them back to their birth beaches to lay their eggs. According to the article “Sea turtles’ long ocean swim home” By the Los Angeles Times, adapted by Newsela staff. The Sea turtles do not have a memory of where they were born, but they
After reading The Earth on the Turtle’s Back and When Grizzlies Walked Upright, many key details are displayed about the Onondaga and Modoc cultures, these tribes vary in their beliefs but the morals that are conveyed through their folklore are very similar. In the story, The Earth on the Turtle’s Back, there is a group of mythical people that live in the Skyland. After the chief's wife dreams about the Great Tree being uprooted, the young chief pulled the tree from the soil, exposing a large hole in the ground, his wife leans to look into the hole and falls through to a sea of water, where the animals that inhabit it created Earth on the Turtle's back for her to live on. In When Grizzlies Walked Upright, the Chief Sky Spirit creates a mountain of snow and ice on Earth and
CHARLESTON, South Carolina (Achieve3000, August 7, 2015). A rare leatherback sea turtle was found on a South Carolina beach in March 2015. The enormous reptile weighed 476 pounds (216 kilograms). It was spotted on the Yawkey-South Island Reserve in Georgetown County. The creature was brought to the South Carolina Aquarium. Workers named her Yawkey. She was treated with fluids, antibiotics, and vitamins. She was the first leatherback to be found alive in South Carolina. Caretakers were eager to see her returned to the sea.
The origin myths The Earth on the Turtle’s Back and When Grizzlies Walked Upright have story details that are similar, yet also very different. The Onondaga and Modoc cultures both respect the Sky Spirit, and believe that the Sky Spirit controlled everything on Earth. A recurring moral in both myths is that everything happens for a reason. In The Earth on the Turtle’s Back, if the Ancient Chief’s wife had never had a dream about the tree being uprooted, Earth would have never been discovered. In When Grizzlies Walked Upright, if the daughter never poked her head out over the top of the mountain, grizzly bears would be able to talk and walk on two legs.
Nature is a very important aspect to many Native Americans, especially in “The Earth on Turtle’s Back” where they value nature to a great extent. On page 20 the author introduces the story with the background about how “they believed that each living thing possesses a unique power that sustains it and affects other”. To further explain this, what they meant was that each living thing has a purpose in nature and that each purpose is very important and help lean to help and affect other. For example in the story the tree affects the people because it was hope for them that it would uproot, and when she falls the seeds she grabs affects the soil because it helped to grow several trees. After bringing the Muskrat to the Great Turtle’s back, to
The data amassed by the scientist revealed that the Mid- Atlantic Ridge and the East Pacific Rise and countless other locations on the ocean floors display the same arrangements of varying magnetic stripes. As new volcanic rock erupts through fractures on the floor of the ocean, a progression identified as seafloor spreading, which causes the seafloor to widen (Trefil & Hazen, 2010). This new rock will be pushed aside as the continents are moved apart and as more magma comes up to take its place. The iron ore in this latest rock will steer to the position of the magnetic north pole once they get through to the top. Every occasion, that the planet’s magnetic field moves in the opposing direction, the dipole course of the planets magnetic field adjust and becomes encased in the recently constructed rock (Trefil & Hazen, 2010).
Light pollution has become a problem for sea turtle hatchlings along developed coastlines. The hatchlings have a natural instinct to move to the brightest direction which on a naturally lit beach is the night sky over the ocean. However, the artificial light that is found on developed coastlines, disorients sea turtle hatchlings and as a result they move towards this light instead of the ocean. According to an article on conserveturtles.org, only 1 in 1000 sea turtle hatchlings survive to maturity therefore changing artificial lighting practices on beaches would help the sea turtle population. The implementation and enforcement of artificial light ordinances for coastal homeowners would be a solution to the effects of light pollution
The climate change has caused not only waters to raise in temperature, but also in the sea level; this is having a major negative effect on sea turtles. When the female sea turtles lay their eggs and bury them in the sand, the rising waters make the eggs’ nest a dangerous place to be, resulting in even lower amounts of turtles hatched. Also, the rising temperatures effects the natural eggs’ incubation temperature of 34°C higher, which effects the sex of the turtle. Loggerhead turtles in Florida are ninety percent female due to this factor. If the temperature continues to rise, there may be no males left at all.
The topic argues about a dangerous problem to some particular turtle's species. It is described as when fishers want to fish, turtles get stuck in their net.The problem is, turtles get trapped into these nets so they cannot come to the surface for breathing air, eventually they'd die.
Magnetism occurs when a magnetic field forms. There are two sides of a magnetic field; south pole and north pole. If the two poles are opposite, they will attract and vise versa. A magnet can magnetize an iron object. Electromagnetic waves work
Earth is in fact an intricate planet that has multiple layers of differing compositions. To be exact the earth has four main layers. The uppermost layer is the one humans come in most contact with, the crust. The crust consists of “thin silicate rock material”(Structure of the). Although the crust is not entirely the same. Actually there are two distinct types of crust, oceanic and continental. “The continental crust is made up of mostly rocks similar to granite while the oceanic crust is much denser and made up of a material similar to basalt”(Structure of the, Rose). The second layer is called the mantle. “The mantle is much denser than the crust and contains similar to the crust mostly solid silicate crust”(Structure of the). “As we travel further down the earth we wind up in the outer core. The outer core is a core of molten nickel and iron. Finally there’s the inner core. The inner is a solid metal core made up of nickel and iron”(Structure of the). All these layers functioning together cast out a magnetic
The strength of magnetic fields is measured in units of Teslas (T). One tesla is actually a relatively strong field - the earth's magnetic field is of the order of 0.0001 T.
Sea turtles lay an average of about 100 eggs in each nest, and lay an average of 3-7 nests during their nesting season (Tim Flannery). Also in Florida, along about a twenty mile stretch of beach sea turtles lay over 150,000 pounds of eggs in the sand every nesting period. Which would seem like enough to keep their population up, but it is not that simple. Now why are sea turtle populations shrinking you may ask? Well, that’s simple. Climate change is not the only threat that a sea turtle has to fear. Along with climate change sea turtles face the fear of being eaten, not being able to make it back to the water when they are first hatched, being picked up by whatever or whoever may come by, and a whole other array of things that most do not even take into consideration. Over the last few years climate change has simply been one of the main things observed when
Sea turtles face a lot of life or death obstacles from the second they are born. Even
Reviews provided by top organization, Intergovernmental Panel on Climate Change indicate that climate change is likely to induce changes in temperatures and adjustment associated with ocean circulation, sea level, and ice coverage. Impact of climate change on marine mammals occur differently according to type of mammal and its dwelling place either deep-sea dweller or surface sea dwellers (Aguirre, Ostfeld, & Daszak, 2012). Marine species distribution is affected by multiple factors; ecological, habitat related and anthropogenic factors. Habitat distributed
On the other hand, the geomagnetic storms have been intensified and enhanced in their frequency as magnetic fields of coronal mass ejections indulges with that of the earth that causes change of direction and leave more radiation and magnetic energy into the environment of the planet earth. Solar Hemispheric Observatory and Solar