Summer of Science: Round Up 1

I decided to do some light exploration and experiments this past week because Cam had been watching an episode of Curios George that featured rainbows. In the episode one of the characters shows George how to make a rainbow with a bowl of water, a piece of paper, and a flashlight. Cam was totally fascinated and completely without prompting or any input from me, wandered off after the episode was over and tried to do the experiment herself. She was a little disappointed it didn’t quite work, but I promised to help her out with it the next day. Instead I thought we might take some time this week and explore light in number of different ways. 

For pictures see my Instagram feed to the right. 

Day 1: Reading

I bought this new book called How Things Work (there are several books with that title, but this one is new and more at a preschool level). It just so happens that it has a couple pages dedicated to light, so we read the introduction to understand a little bit more about light. 

Day 2: Shadow Play

After learning a bit about light we went outside with a stuffed rabbit and set her up on the driveway. I traced her shadow and we came inside. Thirty minutes later we went back out to retrace the shadow. Before coming inside the first time I asked Cam if she thought the shadow would move (she said no). Then I reminded her of the question when we went back out.

She was amazed that it had moved and we talked about what was happening. I asked her if she knew what the light source was outside that was helping cast the shadow (she knew it was the sun). I asked is she thought the sun moved across the sky or stayed in the same place. After some thought she said she thought it moved. I explained that this was why the shadow appeared to move across the driveway and that the distance the shadow had moved was also the distance the sun had moved across the sky in those 30 minutes. She was hooked. We had to come back out several more times (before the sun dipped behind a tree and obscured the shadow). We were also able to notice that the shadows lengthened and changed shape. The reason why was a lot harder for her to understand, but the more we discuss it I’m sure she’ll begin to grasp it better. 

She wanted to do it again the next day with some other toys. 

Day 3: Spectroscope

This was kind of a flop. The device is a little bit like a periscope, but is supposed to help diffract light so you can see a rainbow Cam had a hard time seeing the rainbow in the spectroscope and she wasn’t as engaged with it. The thing is, you don’t really need the “fancy” set up with a paper towel tube and paper slit to see a rainbow in a CD. Just put it in a light environment and move it around. I thought she would like this experiment more because it was very similar to what she saw and attempted on Curious George. I was wrong. 

We did end up getting out the prism and made some more shadow outlines with My Little Ponies and she was a into those for a little while. 

Day 4: Water Wall

We ended up upgrading our water table. Cam hadn’t been overly interested in setting it up and playing with it so we got a water wall. It allows her to dump water into the top and then there is a variety of cups, strainers, buckets, chutes, and funnels that fit into holes in the wall. They catch the water and divert it down the wall into the bottom pool. It’s very cool and a neat experiment in playing with gravity and water. 

Day 5: Moon sighting

Today we are going to head out and look for the moon. It rose this morning between 5:30 and 6 and will set sometime around 9 which means it’s really only up when the sun is up. Ramadan, the Muslim holy month dedicated to fasting and reflection, begins tonight at sundown. The start of the month is begun by sighting the new moon. This is an interesting discussion to have with Cam as it ties in history to the science of time in talking about using the lunar versus the solar calendar. 

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