this week in science was short but we still did a lot of things. well earned how to find they speed of something by just looking at a graph. you cant always give mph but you could give meter per second or even meters per hour ect... another thing that we learned how to do is finding the slope of the trend line, and also we learned that the speed and the slope are the same thing. we also learned hoe to write functions that represents tables or graphs. the function is like the pattern of time and position then you just write it out like, x(+)=2(m/s)-t that's a function. that wraps it up.
GReEn 5
Sunday, November 8, 2009
Sunday, November 1, 2009
this week in science we learned how to draw create and plot data on a graph and table. the things that we learned about graphs were when the line on a line graph curves down or up, if it curves up it is accelerating or going faster because it is traveling more distance per time unit. if it curves down then it is going slower because it is traveling less distance per time unit. if the line goes straight across the graph then it is not moving at all. the other time that we learned is that when something slowes down it moves horizontal.and for tables there is not that much to know or learn. thats it, peace.
GReEn teAm
GReEn teAm
Sunday, October 25, 2009
this week in science i missed the first few days so i cant really talk about how the dissection went. ill try to look on to others blogs to get an idea about what went on. But starting Wednesday when i came back we started to learn about how motion works and what we started to think about is if your moving or if somthing else is moving. sfter we got passed that we wanted to see which way that they were moving so right and left that would work right? wrong because people have different rights and differnts lefts depending on which way they are standing. so we thought of positive and negitieve. that means well first you have to label if the positive is up or down and same with neg.. after you got the base down you can tell which way motion is moving were ever you are.
Friday, October 16, 2009
this week in science we wrer going over how to draw and label wave models. In the begining of the week we started off with the basics like how to draw the waves at different rates of speed. i learned that in order to show the different speedes of the waves you are going to have to make the waves closer together for faster rate of speed and if you want to make the waves look like they are going slower you are going tot have to make the waves fater apart. After we learned hoe to do that we went on the more details of the wave model. like how i learned what a normal line is: it is the line the is pepandicular to the ray beem and the wave. the light can ethier bend toward meaning down or away from the normal line, which in most cases it bends away. after we learned that we drew a wave model with all the details that it should show. If you want to draw a wave model you should show the waves, the speed of the waves, normal line, the angle of incedences, the way the light bends, the light source, and arrows to not make it confusing. knowing this in the real world would help you by, well im not really sure how this would help you out but if someone was like wow look the light is bending you can give them them a very detailed desception of that.
Monday, October 12, 2009
this week in science we did a lot of things luike in the begening of the week we were thinking waht would happen if we shine light trhough water or glass. after going on the computer and looking at this experiment we saw that whenm light hits glass or water then it has a slight curve to it. we also did our own little experiment were we wshined the light through the glass or water and marked it on a board with a dot. after that we took the light and shined it regularly and we saw that the dot had moved slightly to the left. So later on to this week we were talki9ng and disscusing about this. we also predicted wrong we thought that the light would bend up. bend up meaning up towards were it was oppsoed to but it bended down ward.
Monday, October 5, 2009
this week in science was important. we had to experiment our hyoithesis on how we all think that when you shine the beem in the mirror it reflects on the same angle. the way that we tested this was we got a protractor and put it upward on a mirror at 90 degrees and shined the light on and angle then saw if it reflected on the same one. Bryan and i did not like this experiment because we thought it would be better too put the laser on the mirror and claped the chalk erasers so we can see the beam clear. when we saw the angle and the beam clear we tryed to take a picture of it but that faild because we could not get a good shot of it. we decided to go back to the originasl experiment which was a lot eaiser. afeter i finesd that experiment the results matched the hypothesis .
Tuesday, September 29, 2009
this week in science we continued to learn and experimaent more on light. in the bigginig of the week we noticed that when the light hits the mirror you can bearly see tyhe dot on the mirror so mafter noticing that we pridictied and experimanted more and more on this. the experiment was to see when we shin the light in different objects if it has the same size brightnees and also reflectivness. we made a chart and then we recorded it on a scale on to one to five. our groups predic tion was that on lighter colors like white threr is more reflectivnees and on darker colors like black there is more absobstion. also early in the week we had a quiz which i though was fairly easy if you wrer paying attention in class. that wraps it up.
GrEen****5
GrEen****5
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