Science week of 1/14/10

What science ideas or topics did you learn?

This week in Science, we learned and talked about seasons. We also learned why seasons happen and how difference seasons change. First we learned that just because the Earth is farther away from the sun it does not mean that it is winter. We also learned that seasons happen by the Earths revolution and rotation that one side of the Earth is facing the sun and the other is not.

How can these ideas be applied to real life?

This can be applied to real life because first of all, it does happen in real life. Also it does apply to real life because if you go on a simulation where it shows where the Earth is right now, then compare it to what season it is. For example if it is mid-summer right now and the Earth is far away from the sun, then you know that it doesn't matter at how far away the sun is from the Earth.

Science week of 12/13

(Newtons third law)(thanks Aage)

What science ideas did you learn this week?

Over the past 3 weeks, we have been learning about Newtons first, second, and third laws. This week we talked about Newtons 3rd law.

How did you learn these ideas?

We had Cathy and laura sit in 2 chairs facing each other and then Laura put her feet on cathys knees and laura pushed as hard as she could and not only did cathy move, but Laura moved too!

How can this be applied to real life?

http://www.youtube.com/watch?v=PXoDeyybpx0

This is a link to a youtube video I found

Science week of 11/16/09

What Science ideas did you learn?

This week I learned that the majority of things need to be measured in meters. I also learned that when you make a motion diagram, you must label all parts.(velocity arrows,arrows,length, delta v's)

How did you learn these ideas?

We learned these ideas by doing a lab in class with the cars and measurments. Mr. Segen also went over the work in class.

How can this apply to modern day life?

These ideas can be applied to modern day life because people can have a problem like this, Say that you are on I-95, on the radio, you hear that there has been a crash 5.5 miles away from you, you would measure in your head how far away this is to avoid the crash.

Science week of ????

MONDAY:

This week in science, we did some fun and interesting thingies this week. On monday, we took a partner quiz about motion.

TUESDAY:

On tueday in science, we kind of wrapped up grades for the 1st marking period.We also did a lab about functions and cars.

Wednesday:

On wednesday in science, we continued the lab that we started. We had Aage tape a marker to his heel. We timed his footsteps. Every step he took, he laid a marker dot. After that we did a function to see how much time it took.

THURDAY:

Mr. Segan was absent today. We also did another lab to see if a fast car and a slow car will collide at a certain point.

FRIDAY:

Today, was a note day, we took notes basically the whole period.

What science ideas did you learn?

We learned how to find slope

How to use variables to represent time and position, or how fast something or someone is going.



How did you learn these ideas?


You find slope by dividing the vertical difference by the horizontal difference. Here is an example of what slope may look like.

10_______ position over time
5

Slope is defined as the change in the y-coordinates divided by the change in the x-coordinates. People often remember this definition as "rise/run."

For example, a man started at 8:30, or time 1(t1), and ended at 12:00, or time 2(t2). When he ended at 12:00, he was at position 2(x2), or 4.2km. At position 1(x1), the position was 0. The man was traveling at 4.2km/30m( 2.5 kilometers per minute). You could also say he was traveling at 8.4km/1hr(5 kilometers per hour), by doubling the top and bottom.

How can this apply to modrn day life?

This is one way it can apply to real life. Slope affects some people as a snowboarder because the signs on the ramps. The difficulty of the ramp is probably scientifically found by using slope.

Science Week

What Science ideas did I learn?

I learned about Physical quantities
Making graphs, tables, and dot diagrams
For the first time, we used a machine that measured distance

How did I learn these ideas?

-We learned that a physical quantity is any unit of measure. For example, inches, quarts, pounds, seconds, minutes hours, and so on.

-This week we learned how to and made many graphs, table, and dot diagrams of different things we saw, such as Mr. Segen walking across the room. As each second past by, the grapgh would either increase or decrease in angles. For example, if he walked farther, the the graph would have become more steep. If he did not walk far at all, then the graph would be less steep and kind of curvy.



On Friday we got to use the machines that measured time and distance. You could aim it at someone or something moving and when the time was up it would create a graph of the distance the thing was from it at specific time. It not only did that, but it could combine any graphs it recorded into one graph. The experiment my group did was that Camille would run far and just suddenly stop.



How can these ideas be applied to modern day life?

All of these ideas can easily be applied to modern day life. Say there is a bus in New York. This bus is traveling at 60 mph with no turns or stops. If it immediatly stops at a bus stop then the graph would look something like this. It would be really really steerp, then it would just go fla and there would be a straight line until it speeds up again.

science week of 10/23

What science ideas did you learn?

1.We tested to find out which one was a better representation, north, south, east, and west.
2.We also tried to find different ways to communicate direction.
3. We wanted to see what pattern the car moved in. Did it move faster or slower each time.

How did you learn these ideas?

1. Which is more helpful, north, south, east, and west, or right and left? We tested this by first faceing each other and pointed left. Then we faced a diferent direction and pointed left. When we faced the front of the class we both pointed in the same direction, but when we faced each other and pointed left, we were pointing in different directions. Then we faced each other again but this time pointed west. After that we faced the front of the class and pointed west. When we did that, we were pointing the same direction both times. This proves our question,"Which is more helpful". the directions,(north,south,east,west), are most accurate. They are better than left or right because someones left can be another persons right. It all depends where you are standing and which direction you are standing in.

2. What other ways can you communicate direction? (other than N,S,E, and W or right and left). In class we came up with a different way to use direction. We used the idea of a coordinate grid. One direction was X, left horizontally, and Y, vertically or up and down. We also used positive and negative to use direction.

3. Last, does the car change paces or paterns? We tested this by letting the car start going at a specific point. Then, after every second, draw a line in front of the car. After 8 seconds, we measured the space between each line. The bigger space per second the faster the car was moving. The smaller the space between each line, the slower the car moved.This led me to conclude that the car sped up for a short time, but then slowed to a steady pace.


How does it apply to everyday life?

This applies to everyday life beause all the time you hear about cars on the news. Whether it was an accedent or a chase. When you first start a car, you kindof go faster than normal because the engines are still heating up and you need to find your "comfort speed". Once you are used to it, you go in a steady pace. For example, at first, you may go 60 mph. Then you get coftorable and go at a pace of 50 mph.