Archive of ‘Science’ category

Ueno Zoo

On April 23rd, 6th grade went to the Ueno Zoo. We went there by train&walk.

WHAT WE DID

First, we became in a group of 5. My group was, me, Mayuho, Aiden, Asuka, and Henri. Then, we researched our animals one by one. My animal was the red panda. There were about 5 questions to answer.

We visited the Red panda, Bison, Emu, Ring tailed lemur, and ruffed lemur.

The red panda, and bison’s environment really looked like man made. However, the ring tailed lemur, ruffed lemurs and the emu area looked a little like natural environment. There was only one red panda in the red panda area. The area was quite big for only one red panda. The emu area was very small. There was only one emu too . The bison area was medium size. Again, there was only one bison. There were a lot of lemurs.  The area was quite big!!

I couldn’t see the bison really well, and the red panda was sleeping, so I didn’t know if they felt very happy about the environment. However, the red panda seemed comfortable during the sleep. The emu seemed un happy, since the area was small, and he/she didn’t have any space to move around. The lemurs seemed happy, since the area was big. The lemurs were playing around, sleeping, or relaxing.

I think we have zoos to stop making the animals extincting in the natural environment. This means, that if we (human) take care of the animals, there isn’t a possibility that the carnivores will eat the herbivores etc… Also, the humans can notice if the animals look sick or not, and if they are sick, we can make them feel better most of the time. The second reason is to make the humans see the animals, from a man made environment to keep the humans safe. If the people want to see the animals and go to the natural environment, there is danger for humans, nature, and animals.

If I was an animal living in a zoo, I think I won’t really be happy, because there won’t be my whole family, and there are humans everyday trying to watch me! Also, the environment isn’t very similar to the natural environment, so if I need to go to the natural environment if I grow up, I think it won’t be easy as the others which grew up in the natural environment.

I think some zoos should improve making the environments more similar to the natural environment, because one day, the animals will go back to the natural environment, and they need to be suited. I do not know if all the animals are fed the same way, but I think they should leave food somewhere, not in plates because there aren’t plates in the natural environment. Also, they should give food that can be found in the natural environment.

I think we should have zoos because we can take care of the animals more easily, and find out what is good for the animals. Also, I think it is good to visit zoos, but not a lot of people should visit the zoo because,  something might happen to the animals, and we don’t know what the animals think.

 

Our Forces Design Task: Wrapping Up The Experiment

Completing our Experiment

We used the playground for rubber and concrete. We used the carpet in the kirin building. The dirt was in the garden which there is a lot of weed which is near the language building. Also, when we used water, we poured the water into a bucket and we did that in the playground too. When Grace got the bucket from the cleaning lady, me, and Totah was buying food. I bought a small muffin, and Totah bought popcorn. When Totah brang the Popcorn back to class, Mr Fedley said something. Then, everyone in the class laughed. However, I didn’t understand what Mr. Fedley said…

Our Results

As you can see, the average height of:

Rubber- 26

Concrete- 63.7

Dirt- 7.3

Carpet- 61.7

Water- 0

What Our Results Mean

Concrete bounced the most, and water bounced the least. We think concrete bounced the most because concrete is flat and hard the most in the 5 different surfaces. On the other hand, water keeps on wiggling because it isn’t hard. Also the surfaces keeps on moving. That’s why the bouncy ball splash into the water, and won’t come up easily because of the forces. If the water was like a jelly, it would bounce more. I don’t really get why carpet was the second surface that bounced the most because carpet isn’t flat, and hard. Then, I think it would be rubber or dirt the second because it is possible to make it flat, but rubber and dirt was 3rd, and 4th.

Errors in our data

The data isn’t perfectly true because it is only 1 second which the bouncy ball stays at the highest height. Maybe, it can be less than a second. That means, carpet can be the highest surface if we measured it again.

And Our Hypothesis Was….

My hypothesis was:  I think the concrete is the best surface because it is flat, and hard.

This was correct because the conrete was the best surface. We think the reason was also correct because concrete is flat, and hard and the opposite to water. However, I thought rubber was second but it was third. This means it doesn’t mean that surfaces that are flat and hard doesn’t mean that it bounces the most. Even though, this also doesn’t mean it can be the very last because water was 0cm, and there isn’t less than 0cm unless the surface breaks.

And The Rest

For the controlled variable, it was the bouncyball. We chose the bouncyball that bounced the most. The dependent variable was the height. we dropped the bouncyball from 1 meter above. The independent variables were the different surfaces. Water, Carpet, Rubber, Concrete, dirt. If there is one, we should use an machine that can check the height of the bouncyball. If it is impossible, we can video the scenes when we bounce and check the height by attaching the ruler near the spot we bounce.

Moving Force

If we want to expand this experiment, we can choose different kinds of bouncyballs with the same surface, or we can choose flat, and hard surfaces. Also, we can see if the results stay the same of the area of each surface.

 

 

Our Forces Design Task: From Planning To Starting Our Experiment

Me, Grace, Totah

Meet Our Team: The members of my team are me, Grace, and Totah. Grace is a hardworker. She is very smart and is like the leader of our team. Totah is a bit crazy, but funny. It is hard to know what he’s thinking. He always laughs during class!

Choosing Our Experiment: We needed to choose an experiment that relates to forces. We needed to think some experiments by our own. Then, we choose one of the experiments from the list. My group had 2 ideas. One was an experiment with paper airplanes, and the other one was an experiment with the bouncy ball. We were thinking what kind of experiments we should do with the two ideas. Then Grace thought that we can bounce the bouncy balls on different kinds of surfaces. That idea was cool, so me and Totah agreed. ←This is how the experiment looks.

Making Our Prediction & Research Question: The research question of our experiment is “Which surface does the bouncy ball jump the highest? Dirt, Concrete, Water, Carpet, and Playground?” I think the concrete surface is the surface that the bouncy ball bounce the highest, because concrete is flat, and hard.

Variables & Equipment: 

Independent variable: surface 
cc licensed ( BY ) flickr photo shared by coun2rparts - concrete surface

Dependant variable: height
cc licensed ( BY ND ) flickr photo shared by Andrew Imanaka – height

Controlled Variable: same dropping point, same bouncy ball
cc licensed ( BY NC SA ) flickr photo shared by Joseph Robertson – bouncyball

Equipments: Bouncy ball, meter ruler, space, water, dirt, carpet

Our Method:

1. Get all the equipment. Bouncy ball, meter ruler, and a place that you will use.

2.  Drop the bouncy ball from 1 meter above.

3. Do that 3 times each for each surface.

4. Write in the data.

5. Find the average for each surface.

6. Then, find the surface that the bouncy ball bounced the highest.

Risk Assessment:

  • You might trip over, so collect the ball after you finished the round
  • The ball might hit you, so keep away during the experiment, and make sure you have space.
Now, you know the details of our experiment 😉

 

 

COMIC for student led conference

My favorite work I did in science is the Change of state comic

We chose one from

  • How can we transport a gas that takes up too much space for a truck/boat?

  • You left an experiment with a liquid and the liquid disappeared after a couple of days when you left it on the table

  • Explorers have run out of drinking water in Antarctica. What can they do?

  • How can we have a chip packet filled with air so it won’t explode if it gets hotter or colder?

  • You blew up some balloons and they are smaller than when you first blew them up but they still have the same mass. How can we make them bigger?

  • Do you have another idea?  Talk to your teacher.

I chose- You left an experiment with a liquid and the liquid disappeared after a couple of days when you left it on the table. This happens because the liquid evaporated and changed into gas. This is called evaporation. I chose this work because I drew the images on doozla, and also, I thought about the story. I think this work includes lots of creativity!

Science: Cells & Pollination Reflection

Cells– In earth there are 2 types of cells. Animal cell and Plant cell. Plant cells have Cellulose cell wall, but animal cell doesn’t. Plant cell contains cell sap, but animal cell doesn’t. Plant cell has a box like shape, however animal cells have various shapes. Plant cell has nucleus on the side, Animal cell has nucleus on the middle. 

Flower Power– gymnosperms: reproduce by producing cones, the cones give off pollen from the male pine cone. The breeze or wind then carries the spores to the female pine cone. Finally, the spores can fertilize the ovule or egg. It’s not called a seed until it’s fertilized.    Angiosperms: reproduce through flowers. Unlike Gymnosperms which have separate male and female cones, flowers contain both the male and female reproductive systems. The male reproductive system is called the Stamen which contains pollen . The female reproductive system is called the Pistil and includes the egg.  

Our Activities: In this unit, we focused on cells and flowers. For the activity for flowers, we chose a flower, cut it into half, and then looked at it in the microscope. While looking at it, we sketched it. We also did an assessment about a seed. We made a twister that looks a bit like the seed that has wings. then we chose the 4 lengths which we will use to make the twister. Then, we dropped it 4 times each and found out the average time for each wing. We found out that the shorter the wing is, it will drop more faster.

Reflection on the Unit:

I really liked the twister assessment(experiment), because it was very interesting to see the twister twirling, and also it was fun making.  (the table for the twister)

I also enjoyed cutting the flowers, however, I didn’t like sketching them. I enjoyed cutting the flowers because it was fun to use the tools and also it was my first time cutting them and taking out the eggs!!! This unit was my first time sketching using a microscope, so it was hard drawing since I couldn’t really see the inside. (the graph for twister)

 

Science: A Little Bit About Matter

Part 1: Different Types of Matter

There are three different types of Matter. They are:

  • Solid
  • Liquid
  • Gas

How much space do they take up and can they easily change shape?

Solid- They don’t take that much space because solid is made into 1 piece, so that means that it can’t easily change shape.

Liquid- They take up space because if liquid isn’t in a case or inside something, it can spread into a big space. They can change shape because liquid isn’t easy to stay in 1 place, so it changes shape to be stable into a place. For example if you put water in a small cup, it stays in a small area, but if you move it to a bigger cup, the area will be bigger so liquid can change size and shape.

Gas- Gas takes so much space. It takes more space than liquid. It takes so much space because air is gas, oxygen is gas. That means, gas is all around us. Also gas can change shape easily because gas goes everywhere and gas is around different places and gases can’t stay in the same place each second.

 

Part 2: Change of States: In this section- describe the 5 different changes in states (Melting, Boiling/Evaporation, Condensation, Freezing/Solidification and Sublimation). Quickly say how the change occurs and give a real world example. Include at least 2 pictures which are referenced using MLA format.

Melting- It changes from solid to liquid. In real word it’s the same thing as ice to water. For example melting can occur in real world by putting ice in a hot bowl.

Boiling/Evaporation- Boiling is turning cold water to hot water. Evaporation is Hot water changing into gas. In real world, you can put water into a pot and leave boil it, it will change into hot water. Then, if you leave that hot water in a warm place, it will evaporate.

Freezing/Solidification- Freezing is turning liquid to solid. Solidification is liquid to solid using cooling, drying or crystallization. Freezing can occur by putting water into the freezer and changing the water into ice.

Sublimation- Sublimation is solid to gas without turning into liquid. An example of sublimation is dry ice. Dry ice is an ice at first but the ice gets too cold and turn into gas.

Part 3:

In science class we did many experiments to learn about the 5 states. We used the bunsen burner in most of the experiments since we have a license. The first experiment we did on the bunsen burner was for heating, boiling and melting. First we cooled the water with ice. Then, we heated the ice water and then the ice melted. Finally, we continued heating than the water boiled.