Sunday, October 25, 2009

Motion

What science ideas did you learn?

Last week we finish our unit on light. This week we are starting another new and exciting unit, motion!!!! This week we learned about how to understand whether an object is moving or not. We learned an object is moving if the background behind it is changing, the positioning of our telescopes/heads is changing, and the distance between ourselves and the object changes. We also learned that everything that is moving needs to be compared to something, to be considered moving. For example, the sun compared to us is moving. This sentence is true because yes, the background behind the sun is changing, and so is the positioning of the sun, and the distance between the sun and the earth. Yet we all know that the earth revolves around the sun. This means that either the object that is mentioned, in my example the sun, or whatever it is being compared to, the earth, one of the objects is in motion.

What science ideas did you learn?

We learned these ideas by experimenting, discussing, and observing. As a class we all performed an experiment, using paper telescopes. We created our paper telescopes and held them up to our eye. We then observed what happened as we watched Mr. Segen throughout our telescopes, as he moved about the room. We then discussed what was happening and how we could tell Mr. Segen was moving.

Why is it important to know this idea?

It is important to know about moving and motion because we should be able to understand when something is moving or not. We should also be able to understand how we realized that the earth revolves around the sun, not the other way around. Movement is important!!

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