The Hubble space telescope has sent some fantastic pictures back to Earth. Today we viewed some of the favorites of scientists. We reviewed the uses of satellites and talked about how useful they are on Earth. We showed how communication satellites can give us information. We also showed how the Earth compares to other planets and stars. It is truly amazing.
Then we moved onto why we have seasons. We used a model to show the tilt of the Earth and what causes seasons. Then we viewed a short clip on Youtube that showed the Earth, Sun and seasons. Finally we discussed tides. The spring tide is when the tide is unusually high and it is caused when the sun and moon are in line with each other. The neap tide is a very low tide and it occurs when the sun and the moon are at a 90 degree angle from each other.
Students need to bring a wire coat-hanger to class. If you have extras, please bring them for the students that have none. Sundials are due on April 8th. Please make sure that you line it up North South East West and that your stick is at the bottom next to South. The lines need to be drawn out to the very end of the stick. If it goes past your paper, tape more paper on so you get the full length. Very long sticks require a very large drawing surface. Too short of sticks won't show up.
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