Black+Holes+-+BL

Getting Started

 * **Click on the edit button above to put your own content on this page.**

Rubric: [[file:Space Exploration Adventure Rubric.doc]], [[file:Space Exploration Adventure Rubric.pdf]]

 * Written Information **: As you enter text, the area will expand. Make sure to check the required details of the assignment and review the rubric (see document links) to self-assess your work. Your paragraphs will be in block format, enter one return between paragraphs. The tab key, indent feature will not appear when typing directly into the wiki page.

Visuals
 * [[image:http://hubblesite.org/explore_astronomy/black_holes/graphics/encyc_physics.jpg width="364" height="206" caption="http://hubblesite.org/explore_astronomy/black_holes/encyclopedia.html"]] || [[image:http://upload.wikimedia.org/wikipedia/commons/0/03/Black_hole_lensing_web.gif width="240" height="192" caption="Simulation of gravitational lensing by a black hole, which distorts the image of a galaxy in the background http://en.wikipedia.org/wiki/Black_hole"]] || [[image:http://casa.colorado.edu/~ajsh/bhtorp.gif width="347" height="356" align="left" caption="Orbiting a black hole (GIF movie).http://casa.colorado.edu/~ajsh/bhtorpbig_gif.html"]] ||

Make sure to include the location of your images; add a caption with this information

**Works Cited** **Sources** : Include the source information for all of the magazine articles, reference sources (encyclopedias) and web site pages that were used to complete your project. The source information for encyclopedias may be found at the end or beginning of each entry in iCONN. When using periodicals, the publication information will be at the beginning or end of the article. This needs to be formatted for MLA standards. If it is not labeled 'Source Citation' it can be formatted appropriately by using EasyBib.com. You should use EasyBib for the web sites. The final Works Cited should be listed in alphabetical order by the first word of the source citation.


 * Sample:**

"Milky Way." //Kids InfoBits Presents: Astronomy//. Gale, 2008. Reproduced in Kids InfoBits. Detroit: Gale, 2012. "The Milky Way." //WMAP's Universe//. NASA, 28 June 2010. Web. 06 Mar. 2012. . Vergano, Dan. "Galaxy Bracketed by Big Bubbles." //USA Today// 10 Nov. 2010: 05A. Web. 6 Mar. 2012.


 * Your Source List:**

"Black hole." // U*X*L Encyclopedia of Science //. U*X*L, 2009. // Gale Science In Context //. Web. 9 Mar. 2012. [] [] [] "Black Holes." // Kids InfoBits Presents: Astronomy //. Gale, 2008. Reproduced in Kids InfoBits. Detroit: Gale, 2012

**Black Holes** **Topic: Research Focus**
 * What is your topic? Black Holes**
 * State the focus of your research: Gravitaional pull from black holes and what makes them**

**Notes** ==== Include notes, statistics and facts that you will use to write your final paper. You may want to label sections of your notes to help you be more organized as you write. As you take notes from a source, you should list the source citation in the Works Cited section above. ====
 * **Black holes are pockets of space with a gravitational pull so strong that nothing can escape. **
 * **A black hole is one of the strangest objects in space. It is invisible. Anything that gets pulled into a black hole is never seen again. **
 * ** Scientists think black holes are created by supernovas. When giant stars die they explode. The explosion of a star is called a supernova. It, the star, is big enough, a black hole is created after the supernova. **
 * ** After the supernova, the star shrinks. The left over matter becomes very dense. The black hole's gravity is so powerful that nothing can escape it, not even light. **
 * ** Black holes are invisible, but scientists know they exist. Because a black hole has such strong gravity, it pulls materials like dust, stars, and gas toward it. A black hole is like a powerful vacuum cleaner sucking up all the space debris. **
 * ** Using powerful telescopes, scientists can study the effects the black hole has on the area of space around it. They can see gases spiraling into the black holes. **
 * ** Scientists have found evidence of black holes in the center of several galaxies. They have even found a black hole in our own galaxy. It is the size of three million suns. It is 24,000 light years from Earth. It is too far way to be dangerous. **


 * **Black holes obey all laws of physics, including the laws of gravity.**
 * **In 1687, Isaac Newton showed that all objects in the Universe attract each other through gravity. Gravity is actually one of the weakest forces known to physics. In our daily life, other forces from electricity, magnetism, or pressure often exert a stronger influence. However, gravity shapes our Universe because it makes itself felt over large distances. For example, Newton showed that his laws of gravity can explain the observed motions of the moons and planets in the Solar System.**
 * **Albert Einstein refined our knowledge of gravity through his theory of general relativity. He first showed, based on the fact that light moves at a fixed speed (671 million miles per hour), that space and time must be connected. Then in 1915, he showed that massive objects distort the four-dimensional space-time continuum, and that it is this distortion that we perceive as gravity. Einstein's predictions have now been tested and verified through many different experiments. For relatively weak gravitational fields, such as those here on Earth, the predictions of Einstein's and Newton's theories are nearly identical. But for very strong gravitational fields, such as those encountered near black holes, Einstein's theory predicts many fascinating new phenomena.**