Sunday, March 29, 2009

Charting day length

Today's nature calendar task:

Complete the chart started March 15th. What conclusions can you make?

Sunrise: 7:06
Sunset: 7:40
Length of day: 12 hours, 33 minutes

We have been tracking this information for a few weeks now. So far we have only looked at the daily records, I need to put it all together so we can see the changes better. I have a book from the library called "Sunshine makes the seasons" by Franklyn M Branley from the Let's-Read-and-Find-out Science series. It has a great experiment in the back using an orange, a pencil and a flashlight. Franklyn M. Branley has many excellent books about science for kids.

We have learned that the length of the day changes fastest at the spring and fall equinoxes, and slowest at the winter and summer solstices. Since we have passed the spring equinox, the change in the length of day should be starting to slow down until the end of June, where the day length will stay approximately the same for almost 2 weeks.

No comments: