Science Corner: Talking Science with Passages students Rochelle, Deidra and Nikiah

Posted on Wednesday April 12, 2017

Bug Science

by Rochelle Millay – Machiasport

I remember science class in my middle school at Fort O’Brien. In seventh grade we caught insects and put them into jars and then stuck them with a pin and put them on a piece of styrofoam. I remember my friend, Aleaha, caught some weird looking spiders.  One of them was about the size of a nickel, with a white abdomen. I HATE spiders! I think that they are the most repulsive things. I remember catching a grasshopper, a cricket, and a bee. After we were done collecting bugs, we labeled them with their scientific names, and then did a lot of research.

Blobs and Bubbles

by Deidra Pushard – Richmond

What you need:

A clean, 1-liter soda bottle

3/4 cup of water

Vegetable oil

Fizzing tablets (Alka-Seltzer)

Food coloring

 

Directions:

– Put water into soda bottle

– Fill the rest of the bottle with oil 
- Add about 10 drops food coloring of your choice

– Add half of an Alka-Seltzer tablet to start

 

Observations:

– The water and oil didn’t combine.  When I put food coloring in, it sat on the line between the water and oil.
- When I added 1/2 an Alka-Seltzer tablet, it started to bubble. The bubbles stayed green and the liquid turned light green.
- When I added more Alka-Seltzer,  it kept fizzing and the bubbles got bigger.
- When I added some blue food coloring, it started to fizz and bubble. It looked blue and green.
- After about ten minutes, there was a dark layer of food coloring at the bottom, and the oil was still bubbly. They were little bubbles and a light greenish color. Every once in awhile, a big bubble popped up to the top.
- After 3 or 4 days, I dumped out the bottle because oil started to come through the bottom like it was eating it.  Before I dumped it, there was a big blob of black color at the bottom.  It wasn’t a bubble—it was a big blob filling the bottom of the bottle.  The water and the oil was clear, and the oil was on top of the water.

 

What I expected to happen:

I thought that the bubbles would just float. I didn’t expect that they would sink to the bottom first.  This must be because a big bubble would float up to the top, after almost all of the littler ones had already done this and popped, I figured out that this must have happened because it had enough gas to get to the top. Also, I kind of thought that the oil and water would combine, because that does happen sometimes when you are cooking.

 

Conclusion:

We talked about how all things (matter) never really go away, but instead they can be part of a never ending cycle of change. We talked about the water cycle, and how water evaporates and goes up into the sky, and then it comes back down again as rain.  We also talked about density, which is how compact matter is. An example is a bubble and a pebble.  They could be the same size, but the pebble is denser and heavier, and will always sink in water, but bubbles will float up to the surface.  So in this experiment the oil floated above the water because it is less dense than the water.

 

Diaper Science

by Nikiah Berry – Belmont

 

As a science experiment, I tested different types of diapers to see which one is most absorbent. I tested these three brands: Huggies, Luvs, and Parent’s Choice.

 

Hypothesis:

I think that after testing these diapers, Huggies with be the most absorbent because they are advertised all over the TV. I think that Parent’s Choice will be the least absorbent.

 

Materials:

Diapers, water, and a bin

 

Procedure:

1 – Collect materials
2- Take diaper #1 and pick apart all the cotton.
Put all the cotton in a bin.

3- Shake about 4 times to get the powder away from the cotton. When done shaking then put all the cotton in trash. There should be only powder in the bin.

4- Pour one pitcher of water into the bin with the diaper powder.

5- Observe what happens.

Feel diaper power & water mixture with hands.

6-Record observations.

7-Repeat steps 2-6 for other two diaper brands.

 

Observations:

I noticed that the Luv diaper brand were the most absorbent.

The Huggies brand were pretty absorbent, but less absorbent the Luvs.

I noticed that Parent’s Choice brand were the least absorbent of the three.

 

Conclusion:

After doing all this test I came to conclusion that Luvs is the most absorbent diaper. I use Luvs already and will continue to using them.