SCIENCE

Today at science we did a three experiments. Our first experiment was we had to put the sugar in the baking oil our prediction was that it would dissolve but instead the sugar chunked up. That was a really fun experiment and I was surprised with the end result.

 

The second experiment that my group did was vinegar and colored sugar. My hypothesis for that was: if we mix the vinegar and the colored sugar then the colored sugar will dissolve and the vinegar will turn red. My hypothesis was correct the vinegar turned red and the sugar dissolved. In this experiment the vinegar was the solvent and the colored sugar was the solute.

 

The last experiment that my group did was water and colored sugar. My hypothesis for that was the sugar would dissolve and water would turn red. My hypothesis was partly correct the water turned red but only some of the sugar dissolved. I wonder if over time it would completely dissolve. In this experiment the water was the solvent and the colored sugar was the solute.

Science Stations

For science my group is Andrew, Sophie and Nicole. We are working on a mixtures unit. So far are group has done a lot and taken a lot of notes, pictures and videos. We are putting all of are work in a drive folder. We also finished all of the stations and learned a lot.

Rube Goldberg #7- Reflection

 

When my group first met we all agreed to start a fan at the end of our project. We planned on dominos hitting the button. We tried, but it was too hard to hit the button to start it. It was too hard because the domino was not heavy enough to push the button down. I’m glad we switched to the toaster because it was easier and cooler to watch.

I think my favorite part was watching our project work. I liked that part because I got to see all of our hard work pay off. We wouldn’t have done as well if we didn’t put in the second hot wheels track. There’s not much I would have done differently if I did it again.

Here’s our video⬇

Rube Goldberg #6

Our group finally had a successful run of our Rube Goldberg machine after 50 attempts. Even though it took a lot of time, it finally worked. Throughout the project, there were many times when we couldn’t figure out how to make a step work, but we kept changing our steps and eventually made all of our steps work.

During our successful attempt, there were a few points that it looked like it was going to fail. For example, we had a cup attached to a popsicle stick by a string, but during the run, the string almost came off the cup and that would have ended the reaction. Also at the end of the run, the last book almost did not push the lever on the toaster. If that had failed, we would have been really annoyed. Even though our successful run was a little crazy, we did it!

Take 50 success

Rube Goldberg #5

When you are a group of four it’s not easy to find time to get together. We only have one free weekday in common when we can work. It would be easier to do my project alone because I could work whenever I had free time, and there would not be disagreements. Because of this, we can’t waste time.

We tested things one part at a time so we wouldn’t have to reset the whole thing each time. Also, after each attempt, we all helped reset our Rube Goldberg to make it go faster. We even came up with an idea to test our car step without knocking everything down. We put a Dove bottle to keep the car from hitting all of the books and DVD cases. Another time saving thing we did was we put tape so we knew exactly where to put some materials. If we hadn’t had these time savers, we would have had a lot more trouble getting the project done by the deadline.

Rube Goldberg #4

In our Rube Goldberg project there was one part that always gave us trouble. The problem was we didn’t have enough force to knock down a cylinder container that needed to fall to pull a lever that would start a Hot Wheel car down a track. We connected a string to the cylinder container and to the Hot Wheel track lever so when the container fell it would pull the lever down. We tried knocking the container with lots of dominoes, but they couldn’t push it hard enough. We also tried using a softball to knock the container, but the softball kept rolling off our stick reaction.

Since we could not get it to work, we decided to take out that part and instead we put a different Hot Wheels track that did not have a lever. We also took out the cylinder container and instead connected two Jenga pieces. One Jenga piece stopped the car at the top of the track from moving and another Jenga piece was on the stick reaction. When the sticks fell, the Jenga piece on the sticks would fall over and pull the other Jenga piece down with it. This would start the Hot Wheel car down the track. I learned that sometimes something just doesn’t work and that after many tries, you may need to change that idea and put in a new one.

Rube Goldberg #3

Even though my group can’t always get together, some of us have tried different steps on our own and then showed those steps to the rest of the group. I worked on a step that involved a Hot Wheels track and a candy cylinder. This step was tricky because I had to figure out how to put enough weight in the cylinder to make it pull the Hot Wheels lever. Once I tested it out and figured out how to get it to work, I videoed it to show my group. My group also used part of my step in our project. After our meeting today, we are going to try more steps at home to share with the group. This helps us to be ready when we get the chance to meet as a group. We want to put in more steps to get extra points and to make our project more interesting

here is my video

Rube Goldberg #2 – Drawing

The first time we met we made the first drawing of our Rube Goldberg machine. The drawing has to have at least eight steps, but we put more steps to get extra points. We made our design complicated, but not too hard that we could not build it. We tested out some of the parts that we thought would be hard and then we made adjustments if steps did not work.

One step we changed was we took out the Uno Attack game because we could not figure out a way to make it start. We tried to use a train to roll down the track and push the Uno Attack start button, but it could not push correctly. We also took out a remote car part because it was too complicated to pull the remote lever.  Testing was really helpful because it made us realize what works and what doesn’t work. I predict our final Rube Goldberg machine will be very different than our first drawing.