Thursday, November 10, 2011

From the Desks of Isaiah, Elijah CELLS part 2

Bring on the science fun!!It's a race! Well sort of...we wanted to watch some celery tissue carry water up the stalk to the leaves. We cut the celery up the middle, placed one half in a blue water and the other half in red water. And we waited.....
This experiment allows you to see the process of osmosis in action.
I only added the above picture because Elijah looked SOOO cute in it. We sliced a potato,placed one slice in regular water and the other in salt water and WAITED.
The potato slice in the fresh water became a little stiffer, while the potato in salt water became rather flimsy. The water outside the cell is saltier than the water inside, water will move from the inside of the cell to the outside. As the water left the cell it was like letting the air out of a balloon. As more and more of the cells lost water, the slice of potato became soft and flexible. If the water inside was saltier, the opposite happens, and some water goes into the cells, stiffening them up.
We also did it with beans

Checking out the results of the celery race. the blue and the red seem to be neck and neck.
We weren't seeing the leaves of our celery change color as quickly as we wanted to see decided to get white carnations....the result?
How many cotton balls can you fit in a full glass of water without spilling any of the water? Isaiah 4 Elijah 5.
The cell wall organelle supports and protects the cell. Cell walls have small holes, called pores, in them. This lets water, nutrients, and other substances into the cell.
Keep going...
Final count...Isaiah 27 Elijah 34....that's a lot of cotton balls.
In this experiment, you were able to get the cotton balls in the water because cotton balls are mostly air. Even the strands of cotton are mostly air, because the strand is just the cell wall from the cotton plant.
Here are our flowers. We're going to let them hang out for the week and see them change more.
Super cool!

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