No School! :)
Tuesday or January 21, 2015 A.D.:
Today in Physics class we went over some vocabulary. We went over motion which I already know, but we went over Frame of Reference which I have never learned. Frame of Reference is an object that you use to measure motion of a different object. If someone runs on an American Football field and we say that he ran 10 yards, we compare it to the field and say the field is not moving. Because we are basing the motion of the player who is running down the field on the field, the field is the Frame of Reference. We also went over the difference between weight and mass (weight is the net force of gravity and mass is how much matter). At the end of class we learned about Scalars and Vectors. Scalars are a number and a unit like 4 meters/second. A vector is a scalar with direction. (4 meters/second left )
What do you get when you cross a mountain climber with a mosquito?
Nothing! You cannot combine a scalar with a vector.
Wednesday or January 22, 2015 A.D.:
We went over more vectors and combined two vectors and made a new vector called a Resultant vector. We then learned some more vocab and I learned that Displacement is the shortest distance between the origin and a point that an object was or is. After this we started a new lab called Super Worm Average Speed Lab. We used actual worms or larvae that looks like a worm, yes, but they don't have any super powers nor are they super heroes. In the lab we had to write statistics of how far etc. the worm moved on a piece of paper into a table. We would put a dot on the paper where the worm's head was and let the worm crawl for 10 seconds. We would then put a dot where the head of the worm now is. We repeated this process 5 more times so the worm traveled for one minute total. Then we found the distance between the dots and the displacement between the dots and the origin. Because we knew that between every dot the worm traveled for ten seconds, we made a rate of speed. Ex. 6cm/10sec. which if converted to a Unit Rate = .6cm / second. By the way our group's worm's name is Tofu.
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| Super Worm! |
Thursday or January 23, 2015 A.D.:
Today we worked on our lab group graph sheet. We made it really nice and colorful and drew very many worms. We also worked on our lab questions and made two graphs. One graph was for the displacement for each dot that the worm traveled through and the other graph was for the total distance the worm had traveled until that point. Ms. Trainer was our substitute and because she is a math teacher, she was able to help us with the math involved in finding the average speeds and things not unlike that.
Friday or January 24, 2015 A.D.:
Mrs.Giacomelli was back today and we reviewed what we learned this week. She helped us with our lab if we had any questions and I was glad she did because I interpreted a question wrong and I was able to fix my answer. In our worm project we put on our finishing touches and I think it looks great now. Ben and Keira did the graph decorations, Anna made the graph dots and made sure they were all in the right spots, and I told Anna what the statistics where and colored the lines with the help of Ben. Teamwork!
Summary: This week was really fun and I really liked learning about physics. The thing I liked the most is that I learned that vectors and scalars are not as scary as I thought they were in the past 2 years. I believe I should work on always having a back-up pencil because I didn't have in Science class on Monday and I had to do my notes in erasable colored pencil. <===" that was supposed to be a pencil...
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