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Transcript: Seafloor spreading Sea-floor spreading is the process in which the ocean floor is extended when two plates move apart. As the plates move apart, the rocks break and form a crack between the plates. Earthquakes occur along the plate boundary. Magma rises through the cracks and seeps out onto the ocean floor like a long, thin, undersea volcano. As magma meets the water, it cools and solidifies, adding to the edges of the sideways-moving plates. As magma piles up along the crack, a long chain of mountains forms gradually on the ocean floor. This chain is called an oceanic ridge. The boundaries where the plates move apart are 'constructive' because new crust is being formed and added to the ocean floor. The ocean floor gradually extends and thus the size of these plates increases. As these plates get bigger, others become smaller as they melt back into the Earth in the process called subduction. The new rock at the edge has no sediments like the sand or mud, since it is formed only recently. Farther away from the ridge, sand and mud gradually settle on it, in an ever-thickening blanket. The oldest rocks may have 14,000 feet of sand and other sediments resting on top of it. An example of an oceanic ridge is the Mid-Atlantic Ridge. It is one part of a system of mid-oceanic ridges that stretches for 50,000 miles through the world's oceans. The underwater mountains of the ridge may not be more than two miles higher than the surrounding sea floor. Abundant evidence supports the major contentions of the seafloor-spreading theory. First, samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge. Second, the rock making up the ocean floor is considerably younger than the continents, with no samples found over 200 million years old, as contrasted with maximum ages of over 3 billion years for the continental rocks. This confirms that older ocean crust has been reabsorbed in ocean trench systems. By the mid-1960s studies of the earth's magnetic field showed a history of periodic reversals in polarity (see paleomagnetism). A timescale for “normal” and “reversed” polarity was established, showing 171 magnetic “flip-flops” in the past 76 million years. Magnetic surveys conducted near the mid-ocean ridge showed elongated patterns of normal and reversed polarity of the ocean floor in bands paralleling the rift and symmetrically distributed as mirror images on either side of it. The magnetic history of the earth is thus recorded in the spreading ocean floors as in a very slow magnetic tape recording, forming a continuous record of the movement of the ocean floors. Other supportive evidence has emerged from study of the fracture zones that offset the sections of the ridge. Sections in this article: Read more: seafloor spreading: Supporting Evidence for Seafloor Spreading — Infoplease.com http://www.infoplease.com/ce6/sci/A0860994.html#ixzz1ecWGFkw3 Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός "pertaining to building")[1] is a scientific theory that describes the large scale motions of Earth's lithosphere. The theory builds on the concepts of continental drift, developed during the first decades of the 20th century, and accepted by the majority of the geoscientific community when the concepts of seafloor spreading were developed in the late 1950s and early 1960s. The lithosphere is broken up into tectonic plates. In the case of the Earth, there are currently seven or eight major (depending on how they are defined) and many minor plates. The lithospheric plates ride on the asthenosphere. These plates move in relation to one another at one of three types of plate boundaries: convergent, or collisional boundaries; divergent boundaries, also called spreading centers; and conservative transform boundaries. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from 0–100 mm annually.[2] The tectonic plates are composed of two types of lithosphere: thicker continental and thin oceanic. The upper part is called the crust, again of two types (continental and oceanic). This means that a plate can be of one type, or of both types. One of the main points the theory proposes is that the amount of surface of the (continental and oceanic) plates that disappears in the mantle along the convergent boundaries by subduction is more or less in equilibrium with the new (oceanic) crust that is formed along the divergent margins by seafloor spreading. This is also referred to as the conveyor belt principle. In this way, the total surface of the globe remains the same. This is in contrast with earlier theories advocated before the Plate Tectonics paradigm, as it is sometimes called, became the main scientific model, theories that proposed gradual shrinking

PowerPoint Game Templates

Transcript: Example of a Jeopardy Template By: Laken Feeser and Rachel Chapman When creating without a template... http://www.edtechnetwork.com/powerpoint.html https://www.thebalance.com/free-family-feud-powerpoint-templates-1358184 Example of a Deal or No Deal Template PowerPoint Game Templates There are free templates for games such as jeopardy, wheel of fortune, and cash cab that can be downloaded online. However, some templates may cost more money depending on the complexity of the game. Classroom Games that Make Test Review and Memorization Fun! (n.d.). Retrieved February 17, 2017, from http://people.uncw.edu/ertzbergerj/msgames.htm Fisher, S. (n.d.). Customize a PowerPoint Game for Your Class with These Free Templates. Retrieved February 17, 2017, from https://www.thebalance.com/free-powerpoint-games-for-teachers-1358169 1. Users will begin with a lot of slides all with the same basic graphic design. 2. The, decide and create a series of questions that are to be asked during the game. 3. By hyper linking certain answers to different slides, the game jumps from slide to slide while playing the game. 4. This kind of setup is normally seen as a simple quiz show game. Example of a Wheel of Fortune Template https://www.teacherspayteachers.com/Product/Wheel-of-Riches-PowerPoint-Template-Plays-Just-Like-Wheel-of-Fortune-383606 Games can be made in order to make a fun and easy way to learn. Popular game templates include: Family Feud Millionaire Jeopardy and other quiz shows. http://www.free-power-point-templates.com/deal-powerpoint-template/ Quick video on template "Millionaire" PowerPoint Games Some games are easier to make compared to others If users are unsure whether or not downloading certain templates is safe, you can actually make your own game by just simply using PowerPoint. add logo here References Example of a Family Feud Template PowerPoint Games are a great way to introduce new concepts and ideas You can create a fun, competitive atmosphere with the use of different templates You can change and rearrange information to correlate with the topic or idea being discussed. Great with students, workers, family, etc. For example: With games like Jeopardy and Family Feud, players can pick practically any answers. The person who is running the game will have to have all of the answers in order to determine if players are correct or not. However, with a game like Who Wants to be a Millionaire, the players only have a choice between answers, A, B, C, or D. Therefore, when the player decides their answer, the person running the game clicks it, and the game will tell them whether they are right or wrong.

PowerPoint Game Templates

Transcript: Conservation of fishing cat Introduction of fishing cat Health: Fishing cats are susceptible to carnivore protoparvovirus, a disease known to kill them. This disease significantly damages the kidney, spleen and gastrointestinal tract of the body. The fishing cat is also vulnerable to diseases and medical conditions such as feline hemoplasmas, transitional cell carcinoma and canine distemper virus. Conservation Threats Wild life Shamim khan 2225138043 Bs Zoology 2022-2026 Since 2016, the fishing cat is listed as a vulnerable species on the IUCN Red List, as the global population is thought to have declined by around 30% in the years 2010–2015; the destruction of wetlands and killings by local people are major threats to the fishing cat.[1] The destruction of wetlands includes increased pollution or conversion for agricultural use and human settlements. The conversion of mangrove forests to commercial aquaculture ponds is a major threat in Andhra Pradesh, and in some places fishing cats are killed. Over-exploitation of local fish stocks and retaliatory killing by local people are also significant threats. The fishing cat is included on CITES Appendix II and protected by national legislation over most of its range. Hunting is prohibited in Bangladesh, China, India, Indonesia, Myanmar, Nepal, Pakistan, Sri Lanka, and Thailand. Hunting regulations apply in Laos. In Bhutan, Malaysia, and Vietnam, it is not protected outside protected areas, and no information is known about its legal protections in Cambodia. It is the state animal of the Indian state of West Bengal. Its survival depends on protection of wetlands, prevention of indiscriminate trapping, snaring and poisoning. fishing cat The fishing cat (Prionailurus viverrinus) is a medium-sized wild cat of South and Southeast Asia. It has a deep yellowish-grey fur with black lines and spots. Adults have a head-to-body length of 57 to 78 cm (22 to 31 in), with a 20 to 30 cm (8 to 12 in) long tail. Males are larger than females classification of fishing cat: Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Suborder: Feliformia Family: Felidae Subfamily: Felinae Genus: Prionailurus Species: P. viverrinus Characteristics: The fishing cat has a deep yellowish-grey fur with black lines and spots. Two stripes are on the cheeks, and two are above the eyes running to the neck with broken lines on the forehead. It has two rows of spots around the throat. The spots on the shoulder are longitudinal, and those on the sides, limbs and tail are roundish Endangered in Pakistan: In captivity: Fishing cat captive breeding programmes have been established by the European Association of Zoos and Aquaria and the American Association of Zoos and Aquariums. All the fishing cats kept in zoos around the world are listed in the International Studbook of the World Association of Zoos and Aquariums.Zoos in Thailand house around 30 individuals; birth rates are not particularly high.They have been placed in captivity as an "insurance population" due to their vulnerable status in the wild Taxonomy Topic: fishing cat Submitted to: Dr Najiya Al-Arifa Behaviour and ecology Phylogeny: Distribution and habitat: The fishing cat lives among dense vegetation near water and is thought to be primarily nocturnal. It is known to be a proficient long-distance and underwater swimmer. Adult males and females without dependent young are solitary. Females have been reported to range over areas of 4 to 6 km2 (1.5 to 2.3 sq mi), while males range over 16 to 22 km2 (6.2 to 8.5 sq mi). It has been observed resting in thick grassy habitats, often near a water body but sometimes far away from them. Adults have been recorded to vocalise "chuckling" sounds The fishing cat is broadly but discontinuously distributed in South and Southeast Asia. It predominantly inhabits densely vegetated wetlands around slow-moving bodies of water like swamps and marshes.These include low-salinity bodies such as oxbow lakes, and high-salinity ones such as tidal creeks and mangrove forests. Along these bodies of water, it conceals itself within the thick cover of forests, scrublands, reed beds, and grasslands. Most records are from lowland areas. Reproduction and development: Wild fishing cats most likely mate during January and February; most kittens in the wild were observed in March and April. However, fishing cats may mate as late as June. In captivity, the gestation period lasts 63–70 days; females give birth to an average of two to three kittens; the litter size can be as small as one to as large as four.

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