Blog post #8 electroscope

This week we had to make the electroscopes. The steps were to cut out a circle of cardboard depending on how big the rim of a glass cup was, and then you had to cut a line until you hit the middle of the cardboard, and then you unravel a paper clip so that it is a straight line, and then you cut out two pieces of tinfoil that look like teardrops, and then your stick the teardrops onto the paper clip without ripping them, and then you put the paperclip in between those two lines of the cardboard that you cut till the middle, and then you hang that cardboard with the thing hanging off of it in the cup making sure that nothing is touching the side of the cup, and then you tape it on and rub a balloon onto your head, and then once the balloon makes your hair static, then you face the static part of the balloon to the paperclip sticking out and then see what happens. I noticed that the teardrop shaped tinfoil pieces were moving apart from each other.

 

Blog # 7 catapult project

Last week, we did the catapult project where you had to make a game out of popsicle sticks. I made the one that had a stack of sticks and there was one facing the other way. I attached a bottle cap to it and put a bouncy call in the cap and slung it into a cup. It took me a few trys to get it into the cup but it worked. 

 

Blog #6 truss experiment

For last week’s project, we each tried making our own trusses. We had to make a shape or a platform that could hold books. The materials I used were toothpicks, carrots, and a little bit of tape. When I was done making my platform, I started my flip grid video and I recorded myself putting the books on the platform. I was able to put five books on the platform. On the sixth one, the supporters snapped off and the whole thing collapsed. 

 

Blog #5 first project

The project for this week was to make two i beams. I made one off of a video and I made one custom one. The i beam that I made off of the video broke when I put about 7 cans of food in a plastic bag attached to it. My custom made one was stronger than the other. It was made out of a few pieces of cardboard stacked on top of each other. I then made my Flipgrid and talked about my I beams and which one was stronger. This project was really fun and exciting to do.

 

Blog #4 I beam

Today we watched a video of someone trying to make a really sturdy platform with two extremely ductile materials. The two materials were styrofoam and a really thin piece of wood. The first trial of the man standing on it was good. The platform blended a little bit but didn’t break. For the second trial, He put two blocks of styrofoam in the middle of the two pieces of wood. That didn’t bend at all when he stood on it. He also put a few weights on. it weighed a total of 400 pounds on the platform and it didn’t break. As you watch the video, you can see the advances of the platform.

 

Blog #3 Types of glue

In today’s nearpod lesson, I learned that glue used to be made with milk. I also learned that I can make my own glue by using milk and vinegar. One of the words that I learned from the video was cure. The cure time is the amount of time it takes for the glue to turn into a solid. You will find the exact time that it takes my reading the instructions on the back of the glue bottle.

Blog #2 Brittle and Tuttile

In class today, we talked about some brittle and tuttile material. Brittle material is material that isn’t stretchy and if you try to stretch it, it will shatter. We came across glass. Glass can be brittle but it can also be tuttile. Tuttile material is material that is stretchy. One example of a tuttile material is hot glass. When the tuttile glass cools down, it becomes brittle material.