Today in class we talked about our season simulation.
We discussed the biggest mistake people make. The mistake is, people think the when the earth is orbiting around the sun, and it's closest to the sun that's when it is summer and spring. But it is really the opposite.
Then we learned that our season have nothing to do with where the earth is. It depends on where the axis is tilting, and where it is facing.
We did an experiment where the table was the sun. He got a globe and circled the table. We had to determine Which way the eath was facing.
Mr.Finley then told us that our Earth has a tilt of 23.5 degrees on its Axis
-Both orbit an dtilt causes planet to be tilted towards or away from the sun.
-Because of this some parts won't have as much of a "concentraction" of rays.
At the end of class we did an experiment. We got a light and shinned it on a solar pannel. As we raised the solar pannel the number decreased.
What does the diagram above mean? I don't understand it at all!
ReplyDeleteDB
The diagram shows two Earths in two different positions relative to the sun. The solid line through the Earth is Earth's axis, which is tilted 23.5 degrees. The dotted line is Earth's equator. Below the equator is the Southern hemisphere and above the equator is the Northern hemisphere.
ReplyDeleteIn the Earth on the left, the Sun's rays are hitting the Southern hemisphere directly, so it is warmer there (summer). The Sun's rays are hitting the Northern hemisphere indirectly, so it is colder there (winter). We know that direct rays are hotter than indirect rays because of the experiment with the solar panel and the flashlight in class.
On the Earth on the right, it is the same thing as above except that the Northern hemisphere is getting the direct sunlight and the Southern hemisphere is receiving the indirect sunlight.
YZ