Thursday, May 29, 2014

Final Post

     This is my final blogpost. I enjoyed fifth grade science. The thing I enjoyed the most was using technology with our work. I also liked doing the Lego Mindstorms project. I did not enjoy working out of the book. Using iPads made work much more fun. Edmodo was very fun, and so was this (blogger.) Goodbye and I hope you enjoyed my blog.

Wednesday, May 28, 2014

Balloon Investigation

   
    I think that the more the graduated cylinder is filled, the greater amount of gas will be let into the balloon. The amounts in the graduated cylinder are measured in milliliters. We mixed baking soda and vinegar and they let out different amounts of carbon dioxide. The first balloon (from left to right)'s circumference was 13 cm. The second balloon's circumference was 13.5 cm. The last balloon's circumference was 12 cm.

Tuesday, April 29, 2014

5 Bonus Points

     Today I watched a video about molecules and atoms. Matter is anything that takes up space. Matter is made up of atoms. An atom is made up of protons, neutrons, and electrons. The amounts of protons decide the kind of element. Protons are positive, neutrons are neutral, and electrons are negative.An element is something that is made up of one kind of atom. Matter can change states under different conditions. In a solid, the molecules are packed tightly. In a liquid, molecules aren't packed as tightly. In a gas, molecules aren't packed tightly at all. A physical change is when something changes shape. A chemical change is when something happens to the things something is made of. A solution is something that is made of more than one element. That is what I learned during the video about molecules and atoms.

Thursday, April 24, 2014

Sound

    I know a lot of things about sound energy. One thing I know is that sound travels in longitudinal waves. A sound wave is made up of compressions and rarefactions. A compression is when something vibrates up and the air molecules get pushed together, and a rarefaction is when something vibrates down and the air molecules are more spread out. The force of the compression is called the amplitude. Amplitude determines volume.If the sound waves are more spread apart, they have a higher amplitude and a louder sound. If the sound waves are close together, they have a lower amplitude and a quieter sound. Frequency determines pitch. Frequency is the number of times an object vibrates per second. A high frequency gives you a higher pitch, and a low frequency will give you a lower pitch. Sound travels faster through tightly packed objects. Some animals use echolocation to communicate from far distances. An echo is sound that reflects off an object. Sound reflects of hard materials, while softer materials absorb it. That is what I know about sound.

Friday, March 21, 2014

Solar Ovens

    We have been testing three differently designed solar ovens and I made many observations. We did the same thing to each oven.
    The first oven started at 23.1°C, reached 29.3°C after heating for three minutes, and ended at 26.0°C after cooling for three minutes.This oven was a pretty good insulator because you would have to preheat it for half the amount of time something needed to stay hot. This oven reached the highest temperature and heated up the the quickest out of the three.
    The second oven started at 23.6°C, was 25.2°C after heating, and was 25.1°C after cooling. This oven was a very good insulator because it took a short amount of time to heat up, and stayed warm for a while. This oven reached the coolest temperature and cooled the slowest out of all of them.
    The final oven started at 23.3°C , reached 26.0°C, and ended at 23.8°C. This oven wasn't very good because it cooled down at almost the same rate as it heated up.
    I learned that the way ovens are made effects the results.

Wednesday, March 19, 2014

Test Tube

    I thought that connecting with other classes with Test Tube was fun, entertaining, and interesting. I liked that we were giving each other a mix of new information and some topics that we had already  learned about. I learned a lot of new things in a fun way. The Cupertino class's cartoons were very informational and were very funny. They did a good job at staying on topic after they said something funny. My favorites were the ones about ecosystems. I enjoyed making my own cartoons for them to see. My favorite one was about the balloon car. Over all, I thought it was a very informational and entertaining way to communicate.