How Do People Find Atoms?

How Do People Find Atoms?

Recently in class (Somewhere around May 15), we were learning about atoms. We watched a BrainPop video and we had to write 3 things I found out, 2 interesting things I found about atoms, and 1 question. My question was how do people find atoms? I used some links to find an answer to my question:

*Motherboard(https://motherboard.vice.com/en_us/article/8qxe7z/this-microscope-can-see-down-to-individual-atoms)

*HowStuffWorks (https://science.howstuffworks.com/atom10.htm)

*BrainPop (https://www.brainpop.com/science/matterandchemistry/atoms/)

The 3 thinks I found out was: Democritus called atoms atoms from the greek word atomos. I also heard that atoms are made of protons, neutrons and electrons. Neutrons have no electrical charges, while protons have positive electrical charge, and the periodic table of elements; all the items/things displayed on there are all made of atoms!

There were 2 things I found interesting: The density of nucleus is the size of 6.2 billion cars. I also wrote that the center of atoms were made out of protons, neutrons and electrons. The nucleus is stuck together by strong forces.

Atoms are very small things (smaller than dust) that are found almost everywhere! It’s impossible to see an atom with a light microscope, but in 1981, somebody invented something called a scanning tunneling microscope. You can also call it STM. Using a scanning tunneling microscope, it’s now possible to see atoms.

Soon after that, in the UK, SuperSTEM Facility made an electron microscope. Just like the scanning tunneling microscope, you can also see atoms; you can also see atomic columns (A photo of atomic columns ^^^ go up). You can see them because the electron microscope uses beams of electrons instead of photons. Photons have a longer wavelength than electrons, which means electrons have short wavelengths. Therefore it’s more useful to use electrons. You can see closer and zoom into stuff more than before.

Science in the 20th century showed the structure of an atom. They found out that the structure of the nucleus and the forces hold the atom together.

People and scientists from around the world are also trying to find another way to be able to spot maybe smaller things than atoms.

My Role As A 5A Student

In class, we were thinking about our roles as a 5A student. We came up with 5 key things that would make the best classroom and we wrote them down on sticky notes. I wrote: 1. Be Positive, 2. Talk in a normal tone, 3. Be cooperative, 4. Stay on task, and 5. Follow instructions.

I wrote be positive because I think that if people kept saying negative things, it probably would start arguments and we’d get nothing done. I think that I could contribute to this and I can do it by thinking more about the positives than the negatives.

The next thing I wrote was talk in a normal tone because people outside (In the hallway) were talking really loud and nearly shouting and it distracted us. Sometimes we’ve heard them run by  our classroom and say weird things and made some people in our class laugh. Sometimes when my classmates are outside we can hear them from far away. I think I can contribute to this by: When seeing my friends are talking too loud and try to make them talk in a lower tone.

After that I wrote be cooperative. We should be more cooperative because sometimes people are working too slow, so then we should help them so then we don’t take too long. Our assembly is next/the week after next week and I think we should definitely be cooperative.

I wrote stay on task because if we don’t stay on task, nothing would be gotten done. It’s like being positive but more important. Staying on task means that you’re not gaming and playing games or listening to music on the computer when the teacher isn’t watching. If we stay off task, we’ll get too carried away and forget what to do. I can contribute to this ← by telling anyone that’s off task to get back on task so we could finish faster and get maybe free time at the end of what we’re doing.

The last thing I wrote was follow instructions. We should also ask questions about the instructions so that we don’t get mixed up and maybe have to start again. If we follow instructions, our classroom will be functioning much quicker. I can contribute to this by ← correcting anyone I see not following instructions – doing the wrong thing.

I believe if we follow all those things ^, we’ll be a better functioning class :).

Mega Ice

Mega Ice

Yesterday (December 14th), we went to a place called MegaBox. MegaBox is a shopping center and it is really big. Mega Ice is at the very top of the building, we had to take a lot of escalators and elevators.

Mega Ice is 26 meters by 57 meters. It is the only international sized rink in the city. There is a 30 meter glass window where you can see the harbour view. In MegaIce, they host international hockey games and Asian Figure Skating Championships. Mega Ice is also for performances, concerts, exhibitions and birthday parties.

When we arrived at Mega Ice, it looked smaller than I expected. It didn’t look very big. When I got my skates, I realized it was hockey skates so they were more slippery. Later, I changed to the skates I was supposed to wear.       

I went on the ice and it was a bit cold, but when I stayed on it for a long time it was really cold. I forgot how to ice skate, so my friends taught me. After that we made a huge snowball made of ice.

I had a lot of fun in Mega Ice.

 

Make A Map – Newton’s 3 Laws of Motion

Make A Map – Newton’s 3 Laws of Motion

On December 14th, we used BrainPOP again to make a mind map about Newton’s 3 laws of motion.

Newton’s first law is: “An object in motion will stay in motion, and an object at rest will stay at rest unless an unbalanced force acts on it.” So if something keeps moving and suddenly stops, it will still go forward until an unbalanced force acts on it. The unbalanced force is invisible so you can’t see it.

Newton’s second law is: “An object that has an unbalanced force acting on it will accelerate in the direction of that force.” So when you sit when you are on the sofa at home, 2 forces act on you. Gravity and an upward force pushing against gravity. If you slide down a slide, gravity wins because they are not cancelling each other out.

Newton’s third law is:”Forces always occur in equal and opposite pairs.” Which means if you push a door open, it comes back at you with an equal force. The door moved because friction is in between. The door is on hinges, which causes less friction.

I learned a lot about Newton’s 3 laws of motion. I enjoyed creating the mind map.

Sailboats

Sailboats

On the 29th of November, we got put into groups to make sailboats. When we tested it (December 2nd), our sailboat did exactly what we wanted it to do. We tested it in a basin. The school didn’t wanna waste so a teacher used cardboard to blow our sailboat across the basin.

What went well was that it was fast and it took like 1 minute to get to the other side. We also all had something to do. Another thing that went well was we all had a role to play when we were making the boat so it made our boat better.

What was difficult when we were making the boat was making it try to go across the plastic bag (We blew it across the plastic bag because it doesn’t sink). It was difficult because whenever we added something to our boat, it kept getting slower.

I don’t think I would’ve changed the design because without colour it still looks good.

I really enjoyed this sailboat experiment. It was very fun, and it was a bit easy for our group.

Make A Map-Buoyancy

Make A Map-Buoyancy

On December 1st, we made a buoyancy mind map. I learned a lot about what buoyancy and fluid means.

Fluid means liquid like water, gases, air and helium. Fluids don’t resist the way solids do, because if you push liquid it doesn’t push back at you. If you push solids, it pushes back at you.

Buoyancy is why things float in the water. For example if you drop your goggles in the pool, then it will float down slowly because of buoyancy. If you try to push down something with air in it like a beach ball, when you push it down as low as you can and you let go it will fly out because it has buoyancy force. Also if you put something in the pool it moves aside to make room. It is called displacement. When water moves aside, you wouldn’t be able to see it.

Make A Map – Gravity

Make A Map – Gravity

On November 15th, I made a mind map of gravity. I used BrainPOP to make the mind map and to get more knowledge about gravity.

I found out that everything in the universe has gravity: Apples, Earth, the Sun, the Moon, even people.

I also found out that gravity will keep the moon orbiting. If the moon didn’t orbit, there would be one country that is always night. And the rest of the countries will be day. Gravity also keeps the stars and planets orbiting.

The Moon’s gravity pulls toward the Earth. Then it creates a tide. 

Unfortunately, I did not find a lot of information about gravity, but I am happy I found some :).

Make A Map

Make A Map

On November 22th, I made a map about forces. I used BrainPOP to find out the information about force. I found out what net force, velocity, vector, friction, acceleration, non-contact force and contact force mean.

Some examples of contact forces are pulling, pushing, dragging and friction. Contact means like you are talking with someone, touching something or interacting. For contact forces, it means touching something. So if you add contact forces together, it means you are touching something to move.

Non contact force is the opposite of contact forces. Non-contact means that you aren’t touching anything to move. A example of non-contact forces are magnetism and electrical forces cause they are doing things by themselves. Like if you put 1 magnet close together with another one, it will automatically connect.

Friction is when something is about to slow down, speed up or turn any direction. 3 examples of friction is dragging, contact force and acceleration.

I learned a lot from the BrainPOP video, and enjoyed making the mind-map about forces.