Sunday, January 25, 2009

Class Response Science Blog





Right now in science class we are learning about refraction, reflection, and the electromagnetic spectrum.

Refraction is when energy changes speed as it travels from one matter to another causing the energy to change direction. Refraction only happens when the energy hits the new matter at an angle. This is why it is hard to continue riding a skateboard in a straight line when you go from riding it on the sidewalk to riding it on the grass. This is also why images appear to be broken when they are partially under water and partially in the air.

Reflection is when an image reflects off a surface back into your eye reflection happens every time you look into a mirror or any reflective surface.

The electromagnetic spectrum is the range of all the possible radiation frequencies. It includes radio waves, microwaves, infrared rays, visible light, ultraviolet rays, x-rays, and gamma rays. Radio waves have the longest wavelength and gamma rays have the shortest wavelength. Visible light takes up only a very small portion of the electromagnetic spectrum but it is the only part of the spectrum that our eyes can see.

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