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Black Hole Presentation

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Josh Mossing

on 26 April 2013

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Transcript of Black Hole Presentation

Black Holes By Josh Mossing What is a Black Hole? A Black hole is an object in space so dense that its gravitational pull exceeds the speed of light. How are Black Holes formed? How big are they? How common are they? Black Holes are approximtely 30 km in diameter which is about 18.6 miles There are 20 dynamically confirmed black holes Learning Target
G Yes, this does apply to black holes. There is no difference between the gravitational field of a black hole and any other spherical object of the same mass. People say that a black hole "sucks in everything" in its surroundings but this is only true within a short distance of a black hole.In general, the closer you are to an object that has a gravitational field, there is more gravity exerted on you. Learning Target H Learning Target F Learning Target
E Learning Target D Learning Target C Learning Target A Learning Target B The most common theory of how a black hole forms is where a colossal star with a mass of more than 3 times the Sun’s reaches the end of its life, gets crushed under its own gravity, leaving behind a compact blackhole. Drawing isotopes has nothing to do with black holes because a black hole is not made up of any element, it is just empty space. Describing how a radioactive isotope differs from a stable isotope does not relate to black holes because a black hole does not have isotopes. The difference between a chemical and nuclear reaction is that a nuclear reaction takes place in the nucleus while a chemical reaction takes place in electrons. This is not related to black holes because they are not made up of atoms. Fusion does remotely relate to black holes. Black holes are created by an exploding star which rips a hole in space creating a black hole. The star is "powered" by hydrogen. When it runs out of hydrogen, fusion takes place turning hydrogen waste into helium and so on. When a star runs out of its fuel, hydrogen, fusion takes place turning hydrogen waste into helium and from helium to lithium and so on. Fission is not related to black holes. Fission is the process in which the nucleus of an atom is split by a shot neutron, creating energy. The relationship of mass and weight sort of relates to black holes. Mass always stays the same but weight changes depending on gravity. If an object is on the horizon of a black hole the gravity will increase.
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