Davide's Reflection Post

Hey,

Summer is coming!!!!!!!! School is almost over!!!!!!! But I bet all of you will miss......Blogging!!!
I really liked and enjoyed the blogging project. I liked the fact that we could post comments telling our opinions to my frieneds. I also really liked to post, since I could understand better what we did in class. At the start, I found it hard to write and explain perfectly what we did in class. When other people posted what we had to do for homework, it was really heplful, and I liked looking at the blogger instead of moodle. Overall, i really liked blogging.

Have a GREAT summer everyone!!!!

Davide

Variables

Hey readers!! Today in science class, we discussed VARIABLES and how to conduct aFAIR TEST!!! First of all, a fair test is a test that is re-tested three times to make sure that it is right, and in each of the times that you re-test it, you can only change one variable. Most of you readers, at this point, might be asking yourselves: "What the heck is a variable???" Well, a variable is anything that the scientist can change in order to conduct a fair test. There are many different types of variables:

Independent Variable (IV) which is anything the scientist testing the experiment can change,

Dependent Variable(DV) which is what the scientist measures and the actual result,

Controlled Variable (cv) which are all of the things a scientist needs to keep the same, and

Uncontrolled Variable (uv) which are all of the errors that the scientist can have made during the testing.

We watched again a Myth Busters episode were they made an experiment on trucks: do they go farther with the tailgate up or down? First, we needed to write a hypothesis on which truck we thought would go farther: the truck with the tailgate up or the truck with the tailgate down. We figured out that the truck with the tailgate up went farther, since the wind got blocked into the back of the truck, forming a "circle", so the wind coming from the top of the truck didn't fall on the truck, not provoking a drag. Instead, in the truck with the tailgate down, the was no "circle" in the back of the truck, which made the wind fall on the tailgate, provoking a big time drag. After the Myth Busters, we all answered some practice questions for a variables sheet.

Also, for the sixth grade readers, our only homework is (of course) the blog, and the lab!!!

Next scribe is...........DUNCAN!!!!!!

P.S. I couldn't find the exact video we watched in class, but here is the Myth Buster's second try for the same experiment, since the fans complained about their science not being accurate......enjoy!!

http://www.youtube.com/watch?v=r3aqHbD-O9E