What science ideas did you learn?
This week we learned about some of the same stuff last week. For example when and where two cars will crash if the are both traveling at certain speeds. Also we learned how long will it take two objects to be a certain distance apart if they go in opposite directs. Then we learned that dot diagrams aren't too help so we learned about motion diagrams. They are made the same, with dots and origin and positive and negative, but motion diagrams have velocity arrows. Then you compare the speed in between each dot using the velocity arrows.
How did you learn these ideas?
I learned these ideas because the Senior Segen gave us the word problem and said two cars travel in opposite directs how far will they be apart in one hour. Then he gave us their speed and other information we needed. After we created functions and found this out and then we went over it. We learned about the motion diagrams because Mr. Segen asked us if the dot diagram was useful. The dot diagram only gave us their direction and a general idea of their speed. The motion diagram gave us that too, but also a better sense of their speed between each dot.
Why is it important to know this idea (What real world application is there)?
It is important to know this idea because one day I could be driving my car and all of a sudden I could see a car in the distance that was about 2 miles away. Lets say I was going 45 mph and the other person was going 55mph. I could find out when and where we would hit. Then because I thought back to 8th grade science I just averted what could of been a major accident.
Sunday, November 22, 2009
Sunday, November 8, 2009
Mimmo's 8th Blog
What science ideas did you learn?
This week was a short week so we didn't learn a whole lot. We did learn more about functions and how to write them. We also learned how to find the speed of something on a graph. You divide the position at a certain time by that time. We also learned that speed and slope are the same thing. Many of the things we did this week was the same as last week, with graphs.
How did you learn these ideas?
We learned these ideas because the Sege Man asked us what are functions and we told him what they are. Then he showed us how to write them correctly. Ex. x(t)=2(m/s)*t. We learned that speed and slope are the same thing because we said the steepness of a graph shows its speed. Then we used another world for steep and used slope. The slope of the graph shows the speed of the object.
Why is it important to know this idea (What real world application is there)?
It is important to know this idea that speed and slope are the same thing because one day I could be a science teacher and I could ask my students whats the different between slope and speed, as a trick question, and I would have to think back to 8th grade science to remember the answer. If I don't remember the answer one I look like an idoit, and two I can tell my students the answer.
This week was a short week so we didn't learn a whole lot. We did learn more about functions and how to write them. We also learned how to find the speed of something on a graph. You divide the position at a certain time by that time. We also learned that speed and slope are the same thing. Many of the things we did this week was the same as last week, with graphs.
How did you learn these ideas?
We learned these ideas because the Sege Man asked us what are functions and we told him what they are. Then he showed us how to write them correctly. Ex. x(t)=2(m/s)*t. We learned that speed and slope are the same thing because we said the steepness of a graph shows its speed. Then we used another world for steep and used slope. The slope of the graph shows the speed of the object.
Why is it important to know this idea (What real world application is there)?
It is important to know this idea that speed and slope are the same thing because one day I could be a science teacher and I could ask my students whats the different between slope and speed, as a trick question, and I would have to think back to 8th grade science to remember the answer. If I don't remember the answer one I look like an idoit, and two I can tell my students the answer.
Sunday, November 1, 2009
Mimmo's 7th Blog
What science ideas did you learn?
This week we did a lot with graphs. We learned about how to graph things with position and time. We also learned what a graph what look like in different scenarios. For example if a car speeds up the graph curves up, if the car slows down the line on the graph becomes more horizontal. Then we realized the faster the object moves the more steep the line is on the graph. If the objects moves slower the line is more horizontal. Then we learned if the line is exactly horizontal then that means the object isn't moving.
How did you learn these ideas?
We learned these ideas by Mr. Segen made a little car move and told us to graph it's movement. We all graphed the movement and then we compared as a class which was the best. For example some drew a line that all of a sudden just became more horizontal. Mr. Segen then asked that person questions like does the car just slow down or does it gradually slow down. Then that person adjusted their graph so it had a curve which shows it gradually slows down.
Why is it important to know this idea (What real world application is there)?
It is important to know this idea because when I'm older I could be a scientist and I will have to graph the speed of a car that starts a one point and ends at another point. I will have to graph how the car drove from the beginning to the end. Finally I will have to think back to 8th grade science and show how the car first curves up, drives a little bit, and then how the line curves back to more of a horizontal line.
This week we did a lot with graphs. We learned about how to graph things with position and time. We also learned what a graph what look like in different scenarios. For example if a car speeds up the graph curves up, if the car slows down the line on the graph becomes more horizontal. Then we realized the faster the object moves the more steep the line is on the graph. If the objects moves slower the line is more horizontal. Then we learned if the line is exactly horizontal then that means the object isn't moving.
How did you learn these ideas?
We learned these ideas by Mr. Segen made a little car move and told us to graph it's movement. We all graphed the movement and then we compared as a class which was the best. For example some drew a line that all of a sudden just became more horizontal. Mr. Segen then asked that person questions like does the car just slow down or does it gradually slow down. Then that person adjusted their graph so it had a curve which shows it gradually slows down.
Why is it important to know this idea (What real world application is there)?
It is important to know this idea because when I'm older I could be a scientist and I will have to graph the speed of a car that starts a one point and ends at another point. I will have to graph how the car drove from the beginning to the end. Finally I will have to think back to 8th grade science and show how the car first curves up, drives a little bit, and then how the line curves back to more of a horizontal line.
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