3-D printers print cars!

3-D printers are making cars!

Vehicles were printed in just two days in Chicago, then New York

The article I read's name was 3-D printers are making cars. In this article it explained how 3-D printers can make cars in only 2 days. I thought that his invention was pretty good but there could be better and more advanced things that people could create wit these 3-D printers and not just cars. These will help us in the future but I thought that they should have created more useful things than just cars with these printers.

These 3-D printers simply do this by an arm moving slowly from the bottom upwards leaving liquids that are usually plastic or metal that quickly (sometimes there are even cells, concrete, or even food!) are turned into either solids or semi-solids. High schools started to use these printers to print their new sculptures or toys and even fingers and body parts. These printers can even help more if you have one in a store they can easily print the device you want to buy for you and then you wouldn't need to go get a new one from a new store. However this may be a disaster to the economy because if everyone has is then no one will have to spend any money and stores will be shut down. The value of money all around the world would go up because everyone would use 3-D printers and people who want to buy things would have to pay extra. Another problem that is going to happen with these printers is that if the money's value goes up then 3-D printer ink would be too expensive to buy. The printer can mostly print all the parts except for some additional parts like the engine and the motor that makes the car move. The designers made those additional parts and attached it to the car.

If I were to compare this article with the last one I did I think this one would help humans in the future more but electric cars are still safe and less polluting. This could create us a worse future but also a better one. It could create pollution but it could also help us find another way to do everything for example if we create a light speed spaceship there is a possibility that it will get destroyed so before we send it out we could print it once or twice so that we have an extra copy. I also think that people can create electric cars and also use the knowledge we know about the electric cars and use that to make less pollution and better use of the materials we have and the knowledge we have.

Sources:

https://student.societyforscience.org/article/3-d-printers-are-making-cars?mode=topic&context=104

Google images

3-D Printed car in chicago

Growing Snow

In this experiment my partner and I added salt to water and put it into one cup and put fresh water into another and we had the polymer in 2 plates and we added salt water to one of the plates and put fresh water into one.

Hypothesis:

Salt water would make the polymer grow slower than the fresh water because salt water can have negative influences on things. 

What I Used:

For this experiment my partner and I used the growing snow (polymer), 7.3 grams of salt, 2 stopwatches, Four plastic cups two for the polymer, one for salt water, and one for the fresh water. Lastly I needed the triple beam balance to measure the amount of salt.

Experiment:

To start this experiment I had to gather all the things which were: polymer, 7.3 grams of salt, 2 stopwatches, Four plastic cups two for the polymer, one for salt water, and one for the fresh water. Then I had to put the put the polymer into 2 of the plastic cups. then I put another 2 cups on the table and put water in them both. I took a cup and put salt in it and I measured the weight of that which was 7.3 grams. Then I put it in the cup with the water and stirred it up. Then I put all of it in one of the polymer. I started the stop watch as soon as my partner put the water in the polymer and at when the polymer stopped growing I saw that the salt water made it grow at the time of 1 minute 10 seconds. Then I put the polymer aside and took the other polymer and the fresh water. My partner put the fresh water into the polymer and waited for it to grow. Then I saw that fresh water grew completely in 10 seconds. I recorded all the seconds and the minutes.

Record/Analyze:

The salt water polymer grew in 1.10 second while the fresh water polymer grew in 10 seconds. I put 7.3 grams in the fresh water to make it salt water. I recorded the time it took for it to grow and then I made sure to record the time accurately. Then I could record the other one and how much it took for the fresh water to grow polymer. The fresh water made the polymer grow faster.

Experiments table results:

The Table:

	Salt water	Fresh water
Seconds	1:10 minutes	10 seconds

Conclusion:

I found that my hypothesis was correct and fresh water did make the polymer grow faster than the salt water. I found this intresting because anything could happen in this experiment. I was 70% sure that my hypothesis but there was still 30% chance that it could have been wrong. To make this experiment more accurate my partner and I could have made sure to do a few more trials.

Reflection: 

I found this experiment very fun and interesting. If I could do another experiment with polymer it would be: Does Nestea or Vinegar make the polymer grow more?

Computers Help Electric Cars Turn

The article I read was about how computers help electric cars turn. The only thing is that it does not only talk about how the cars turn it also talks about how the electric cars are created. The electric cars are created by switching the gas tank with a ton of huge batteries. The worst part of electric cars is that they are hard to turn but engineers are Ohio state university think they figured out a way to help these cars turn. They do it by connecting and setting the speed of each wheel one by one with computers. 
What they do is make one wheel turn faster than the other allowing it to smoothly turn around corners. For example the front right wheel turns fast and the front left wheel turns a little faster. if they want to make a sharp turn they need to set one of the wheels to go very fast and one of them to go very slow. The wheels will still rotate but not as much as the gas tanked cars. This would help the environment and us because the environment would be healthier and so would we. This new technology could decrease the amount of car crashes per year. It could also help people get to places faster. If this technology did not exist people would have to be late because they would have to go forwards right or left then go back then go the way again and they wouldn't be able to turn too good.
Article:
https://student.societyforscience.org/article/wheelies-computers-help-electric-cars-turn?mode=topic&context=104
Article by: Junmin Wang, Ohio State University