18smiths blog heyy killjoys;)

In science class we found this web site, called switchzoo  where we had to make a bunch of different animals.

This one is realistic.

This one is suppose to be unrealistic

So during science class yesterday we looked at are cheek cells and onion cells, we had to make sure that we didn’t bump the lenses or else they would be impossible to look into.

The cells on the onions sort of looked like hexagons and little lines , the onions were pretty easy to find even at a 40 lenses. Our cheek cells looked blue because of the a special chemical called methyl blue that made our cells look blue(a stain), the cells basically looked like little rain drops. I think it was pretty easy to put the cells on to a cover slip and insert it under the microscope but looking for cells and focusing was actually pretty hard because on a 40 lenses and a 100 lenses because you had to search alot of the parts of the cells were just all around and they were just small cells.

Somethings that were relevant to safety were making sure not to use the same chopsticks as some else to take cells off your cheek cells or we could catch a sickness from someone else.Also when we were carrying the microscope we had to be sure to carry the base of the microscope and the top of it. We also had to be careful with the methyl blue(for cheek cells) and iodine(for onions) because if we got it on our hands it could cause our hands to stay a certain color for a few days and if we got it in on our clothes it could stain our clothes forever.

Method:

Onion Cells:

1st: Get a piece of a onion then peel one layers fro  the onion

2nd: Put the layer on to a slide and next drop iodine onto the  layer and place the cover slip on top of it.

3rd: Put the slide onto a microscope and start searching for cells.

Cheek cells:

1st: get a pair of chopsticks and put the chopsticks onto the side of your mouth and take part of your little cells.

2nd: put the cell onto a slide

3rd: put a drop of methyl blue onto the cell and put a cover slip onto it

4th:Put the slide onto a microscope and start searching for cells

Today during science class we did a experiment with salt and water, so basically we first put sand into a small bottle then we put that bottle into a beaker of water and we had to sure that it didn’t float because it was more dense then water, next we moved the bottle of sand into a bigger beaker and we also filled that beaker with water but then we added salt and since salt water is denser than sand the sand floated.