Impact Craters Lab

Today Alaina, Honore, and I all did the Impact Craters lab. We had to drop a golf ball from 5 differant heights (we did 6) and measure the depth and width. We found that 4.5 (for the width) and 2 (for the depth) centimeters was constant in all but the last two where 1 (for the depth) and 3.5 (for the width) centimeters was constant. Next, we had to calculate the GPE. The way we have to calculate the GPE is GPE=MGH we had the G and the H but we needed the M to be able to find the GPE. So, we took the golf ball to the scale and found that it weighed 45.8 grams. We know that mass is measured in kilograms so we needed to divide 45.8 by 1000. 45.8/100=.0458. Using this, we calculated the GPE of each of the heights. These were the calculations: from 36inch=.41J. 30inch=.34J. 24inch=.27J. 18inch=.21J 12inch=.12J 6inch=.07J. Next we had to calculate the velocity by using GPE=KE when KE=1/2(M) (V)2. For these calculations we got the velocity for: 36inch=.62m/s 30inch=.6m/s 24inch=.5m/s 18inch=.4m/s 12inch=.3m/s 6inch=.2m/s.
Thats all for today!

Motors: A Magnetic Movement

Today Meena, Thalia and I did a lab on conducting electricity. We had to make something using a 6-Volt battery, 5 feet of insulated copper wire, a straw, and a needle. First, we wrapped the wire around the straw until there was 3 inches covered. Then we scraped off the insulation on the ends of the wire. Next we touched the end of the wire to both sides of the battery. Then we inserted the pin into the wire covered straw. The first time that we did it, Thalia was holding the battery and wire and it sparked in her hand. It was so funny! She dropped the battery and ran... to the bathroom I think. Haha! Anyways, now its Meenas turn. She had been holding the battery for about 6 minutes when all of a sudden she screamed. Apparently, the wire gets really hot when you touch it. Thats all that we had time for today. Catch ya next time!

Body Power

Today Clara, Gabby and I found out how may calories a minute we burn. First, we needed to fin our BEE (Basal Energy Expenditure) which is found by this equation: BEE=65.5+9.M+1.7H-4.7A. A stands for age, H stands for height in centimeters, and M stands for mass (which is your weight in kilograms). Next we found how many calories we burned per minute. Then we found our EEE (Excersice Energy Expenditure) by multiplying the calories we burn per minute by the number of minutes in 2 hours (120). Finally, we found our DEE which is found by this equation: DEE=BEE+EEE. I found that my BEE is 807.8, my EEE is 240, and my DEE is 1047.8!!!

Gravity Alterations

I wasn't here for this. :)

Lego Robotix

I wasn't here for this. :)

Pre Culmination Prep

It was really easy today because Lucy and I had already finished everything else yesterday. So today, we did the one thing that we could do, we helped everybody else! Theres nothing really to report except that the balloon station is apperantly supposed to have a smaller basket (according to Rhys and Cecilia) and it seems like Lenas station, the launching station, isn't really working out that well. But we'll see!!!!! Wish us luck for the mini culmination!


*luck*

Pre Culmination Prep

Today Lucy and I made the basket so that it would hold anything without letting it fall out. Then, we tied the parachute strings so that if the robot pulled on one side, it would unravel and they could grab the thing inside of it. We get it dropped consistently in the same spot, and all we have t worry about now is if the robot can unravel it well. :)

Pre Culmination Prep

Today we built a box which we would use to hold the things to transport. We cut the hole and added the box but it kept going really far to the left. So we cut a bigger hole (by about an inch) and made the box a sack again and threw it down the stairs. It worked better this time but it wasnt going anywhere where the robot could pick it up. Then we had a bright idea, we swung the parachute and right when it was going to swing to the right, we dropped it. It landed on the 1st step with the parachute on the ground floor! I hope the robot claw works!

Pre Culmination Prep

Today Lucy switched with Hannah so now Hannah is doing the parachute with me. To start, today we connected the strings then made a pouch with the leftover garbage bag. We tested the parachute out and it worked with some heavy weight but then it started going to the side and backwards. I confronted Mary Margaret about this and she advised me to make a hole in the top of the parachute. Next lab class, Hannah and i will start with a small hole in the top and work from there.

Mini Culmination Prep

To begin, our group (The Pirate Ninjas/A1) took a really long time to pick the jobs. Most of the people, including me, wanted to do the robotix lab. I ended up being placed in the one section that I said I didn't want to be in and wasn't good at. we ended up having to pick a number between 1 and 100. After the jobs were picked, Lucy and I went to go start making the parachute. We went and grabbed the big trashcan bags and cut it into a big square. The farthest we got today was punching holes in the corners. The trash bag is now in my file cabinet!

Science Commercials

Recovery Systems

My partners and I set out with the challenge of creating a parachute that would balance perfectly when dropped off a ledge. When we opened our supply bag, there was already a parachute made. We then tested it by going up to the sixth grade and dropping it down the stairs. It worked well. Our next task was to delay the fall even more. W e layed out the parachute and made the strings tight to the middle. we then connected it to the weight. That was the one that worked the best. We then realized that we could unfold the bag that was the base of our parachute. We unfolded it and made the strigs tight to the middle again. We lauched it, but it folded in half and didn't have any resistance. That was because the strings weren't the same length.

Launching From The Moon

Today my partners and I attempted to transport a load of supplies from one end of a string to the other. The materials we were permitted to use to carry the supplies were balloons, a straw, tape, and a cardboard tube. Everything except the tape cost money to use, including every launch attempt. We started out with $4.7 million dollars. It would have been much easier if the other end of the string wasn't higher than the other end. At the end of class we managed to successfully transport the balloon and two sticks to the other side. Unfortunaltley, we did not have enough time to transport anything else.

Remote Repair

Today the teachers decided to try out a new method of communicating between partners when we were separated. The mission was for the partners to spread out in different parts of the room and assemble a component of a robot and talk to each other using Google chat. The teachers had changed the way that we communicated this week and instead of using Google Chat we used ichat. One of the girls in my group didn't have an aim account so we had to quickly set one up. It ended up taking all of the time we had to build things. Next time I will try to be more efficient with my time. :)

Practice Grab and Preview

Graphing and Motion Detecters

Today in class, my group and I used motion detectors to graph acceleration, velocity, and position. I learned that acceleration is how fast you are speeding up and velocity is speed. When somebody walks away from the motion detector the graph line goes up and when a person goes towards the motion detector, the line goes down. Today was soo fun!

Sience

If we are on the moon where the acceleration due to gravity is 1.6m/s^2 and we were playing softball, it would be much different than if we were playing on earth. Once the ball has been thrown, it would go the same speed and would have the same amount of inertia as it would on earth except it would take longer to fall back down. You also wouldn't have to use as much force.

Robotix

Today in class, my partners Gillian, Kayla, and I created a robot that could be used to push or carry things from one area to another. We started with a lot of cords which really confused me. After our teacher helped us understand a different way to move the robot, we added the wheels and put something that would allow us to push rocks in front. We tried it out and we all were really confused when it wouldn't go. Then we realized that the cord that connected the wheel to the battery pack was resisting. We raised the wheel and it worked! Heres the final product:

Thrust Structures

For this lab, my group and I had to create a thrust structure. Although we didn't get it finished, we had learned many things. I particullarlily learned that if it is more compact, it will be stronger. we went through many test launchers. i lso ended up burning myself alot. :)

Bernoulis Law

for my bernouis law project, i found that if you fold a piece of paper in half and put it up on the table like a tent and blow, you can make it collapse!!

Welcome

Beached Whale!
Welcome to Emmas blogspot...shes awesomer than awesome. im craaazy. i like gwen stefani colors.