Monday, April 27, 2009

Sundial


Sundial


In the morning we went outside and put a large piece of paper on the ground. We put bricks on the side to stop it moving or getting bumped. We then put a large peg/nail in the center. We drew a line where the shadow of the peg went and marked the time. We kept marking the shadow every hour until the sun didn’t leave a shadow any more. We then measured the degrees for each hour and discovered that the shadow moved 15 degrees each hour. We then completed the clock from 9 am to 9pm and found that it was 180 degrees – a straight line. In 24 hours it had made a complete circle.

2 comments:

  1. What time is it now?
    Great work

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  2. This sounds like a very cool project. Keep up the good work!!

    ReplyDelete