• What are some things you are wondering after completing this activity? I wonder if some animals could completely change where they live and what they eat if they had no food where they used to live? I also wonder if it’s possible to bring back a species after they got extinct and make them have an even bigger population and maybe make them eat something different like evolve them?
• What happened after the yellow perch were eliminated from the food web? The animals that I had where very impacted in this because they ate yellow perch. But, they also had so much other food that it didn’t matter if one fish died cause they had so many other preys. But still, a few of my strings collapsed but even though, they still had a lot of food to eat after.

• What challenge excited you the most? Why? The paper tower challenge. It was the only challenge where we had to make up the whole idea like in Save Fred we had some background knowledge of what was going on. Also, are ideas kept breaking down and we finished with a half-built tower. But if we didn’t need to stop then we would have finished with a very big tower.

• What was difficult about the challenges? Making our ideas. It was easy to make the ideas but when we had to make the idea it didn’t work out like how we thought it would. Also, some of the ideas were hard to do in under 15 minutes (Paper Tower Challenge). But in the end, it ended up working anyway because our tower was still pretty tall anyways.

• What was comfortable about the challenges? Making ideas and being in a group. It was very easy to make ideas because before we start I think about some good ideas before we start. I always enjoy being in a group and I was put with people I am usually not with, but even though I’m usually not with them, we still all worked very good together. And had a lot of fun.

If I had the opportunity to build or change parts of my solar oven again, I would do the following: I would use more felt for insulation because I didn’t use a lot of insulation. This would help my solar oven because it would make my solar oven hotter. I would also use my tinfoil so that it would reflect more on my food, which would make it cook faster.

Scientific Question We Investigated: Does air have mass

Air has mass. I know that because we tested with balloons. First, we weighed a balloon that was not blown up in ounces. It was 2 ounces. Then we blew up the balloon with air. That weighed 2.7 ounces, which is 0.7 more oz.

Air helps keep things in the air. But sometimes it makes the object fall. Like when we filled up the balloon with air it started sinking. That meant that it was getting really heavy, which proves that air is matter and matter has mass. Another example is clouds, they weight about 1 million oz and air keeps them up in the sky than on the ground, that proves that air has matter.

Credit to Anne Marie Helmenstine, Ph.D. for some of the second paragraph.

The young salmon is the only omnivore on the river food web. For example, it says the young salmon eats algae which is a plant. The text also states that it eats sculpin which is a fish/meat. That means the young salmon eats plants and meat which is what an omnivore eats.

This week in science to study potential and kinetic energy we created a moving boat using 2 rubber bands, 5 popsicle sticks, cardboard, 24 inches of tape, and 4 paper clips. To create the boat we went through the engineering design process, which is shown below.

My original boat: 

My original design is a boat that is called the S.S. JPJ.

I believe my original design will allow the boat to stay afloat and move through the water because it looks really cool and the way it works makes sense.

When I put my boat in the water tub this is what happened: it broke and died R.I.P.

The changes I am going to make to improve my boat design are changing the whole thing.

My re-built boat:

I believe my new design will allow the boat to stay afloat and move through the water better because it is flat to flout.

When I put my newly designed boat in the water tub this is what happened, it failed again R.I.P.

Some more improvements I could make to my boat is everything!

This challenge was not comfortable because we did not really get it.

This taught me about potential and kinetic energy because are’s didn’t have any of that energy.

This week in science we have been focusing on mapping energy transfers. We discussed the transfer of energy on a roller coaster, when lighting a match, when using a pull back car toy, the list goes on and on. Below you will see an energy transfer and the why/how behind it.

Object or thing I choose to observe: Flag on a flag pole

The mapping of the energy transfers: 

Motion energy to Motion energy to Elastic energy to Motion/Gravitational energy.

A paragraph that explains the how and why of each step of the energy transfer(s) I observed:

When you put up the flag up it is motion because you have to physically move the flag. When you tie it is motion because it is work to tie it. And then when it is moving it is motion because it the wind makes it move. And the way that it moves with wind is gravitational energy because gravity it is making it stop for a minute, which then makes it go back to motion energy to repeat.

Please Watch Thank You!

https://drive.google.com/file/d/1Ypkun5hp8BxkfST7jdXOJDD0OIOURcCO/view?usp=sharing

Throughout our science unit, we have been focusing on an organic and inorganic material. As an experiment, we decided to compare the growth of a bean seed in organic material vs inorganic material. We developed hypotheses and predicted what type of material our bean seeds would grow best in. Over the past three weeks, we have observed our bean seeds once or twice a week to see how they are changing and growing. Below are my observations I noticed today.

Here is a picture of my bean seed growing inorganic material: 

Here is a picture of my bean seed growing in organic material: 

My observations about my bean plant that is growing in organic material are it is growing super well and healthy.

My observations about my bean plant that is growing in an inorganic material are it is sprouting but very unhealthy.

Conclusion: I think the plants grew better in organic material because of these reasons: It is growing really fast, healthy, and big.