Science+Fair+AK2

My science fair topic is "How much salt does it take to make an object float?"


 * Hypothesis:** If a small object needs about 20 grams of salt, then the more mass the object has, the more salt I need to make the object float.

Salt is known to make things float because the density of the water increases. Objects float better in salt water because the salt water is denser, so it makes the objects easier to float on. Salt water in the ocean are about 2.5% more heavier than fresh water because of the density of the salt water. When putting an object in fresh water, the density of the water won't be as dense as salt water. For example, putting an egg in salt water would just rise up and float and unlike the fresh water the egg will sink to the bottom. The ocean is a lot more dense when the temperature goes down. Temperature plays a great role in the amount of density in the water.
 * Notes:**

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 * Sonwnes:**
 * This is a valid source of information because when you look down to the bottom and click on the about button, you can see who made this website.
 * This is a valid source of information because the website was created by people who has taken years of study to create the website.
 * This is a valid source of information because it is apart of the Alpha Books that has been published by Nancy K. O'Leary and Susan Shelly.
 * This a valid source of information because is made by PBS.
 * This website was sponsored by the National Earth Science Teachers Association.

=Works Cited= Bergman, Jennifer. "Density of Ocean Water." //Windows to the Universe//. Windows2Universe, 31 Aug. 2001. Web. 03 Oct. 2013. [].
 * This website was sponsored by the National Earth Science Teachers Association.

NOVA. "Buoyancy Basics." //PBS//. PBS, n.d. Web. 03 Oct. 2013. [].
 * This a valid source of information because is made by PBS.

O'Leary, Nancy K., and Susan Shelly. "Objects Float Better in Salt Water Then Fresh Water." //Infoplease//. Infoplease, n.d. Web. 03 Oct. 2013. [].
 * This is a valid source of information because it is apart of the Alpha Books that has been published by Nancy K. O'Leary and Susan Shelly.

Salzwedel, Mark. "Why Do Things Float in Salt Water? | EHow." // EHow //. Demand Media, 26 June 2009. Web. 24 Sept. 2013. []. "Why Does Salt Make Things Float?" //- Ask.com//. Ask.com, n.d. Web. 03 Oct. 2013. .
 * This is a valid website because people who created the website has taken years of study.
 * This is a valid source of information because when you look down to the bottom and click on the about button, you can see who made this website.