Clara+Trevisan

Please direct questions until May 7th to Mrs. Kreide's wiki page:

**//Here is the Science Fair Paperwork collected for your groups this week.... Brian and Jodi Burda//**
 * Student:** Brady Dornblaser will provide you with a hard copy of her report on Friday, March 8th.

2/23/12 Hello Everyone, Just a quick word to touch base with you all. I would like you to think about planning in advance to avoid the crazy run for the dead line. Where are you in your project? Don't hesitate to ask questions.

For Matthew, Alexander and Brian. Are you still thinking of experimenting the paper towel absorption?

For Brady, Isabella, Dominique and Nikole food wrapping ?

For Rachel the veggy/fruit fuel for a clock? Hi Mrs.Trevisan how do I get the density of my potato and zucchini I measured them botb and the zucchini weighted 5.7oz, diameter 1.6 length was 7.5 and the potato was 14oz and the diameter 2.5 and the length was 6inches

Density is the mass of the potato or zucchini divided by volume of the potato or zucchini or Density= mass/volume First change ounces into grams because the most common mass for density is grams. Then calculate the volume. To calculate volume take the potato or zucchini and place it in a measuring cup with a know amount of water measured in milliliters. Make sure there is enough water that it can cover the vegetable. Place the vegetable in the water and measure in milliliters how high the water level goes up. Then take your ending water level in milliliters with the vegetable and subtract the beginning water level without the vegetable. So an example would be 700 ml - 500 ml = 200ml of water displaced To continue the example if the mass is lets say 600g and 200ml is the amount of water that rose, then to plug it into the density equation or Density= mass / volume would be Density = 600g/ 200ml or D = 3 g/ml The density of water is 1g/ml, so if the vegetable floats then you know it's density must be less than 1 g/ml and if it sinks it must be greater than 1g/ml. Therefore the 3g/ml calculated for the example would mean that it would sink in water. Please let me know if this helps. If not give me the numbers you recorded and we can work on the calculations. I will be on campus in the hall after school on Wednesday to work with another group on their project, so please feel free to stop by. Mrs. Kreide

"The important thing is not to stop questioning. Curiosity has its own reason for existing. " Albert Einstein

C.Trevisan