Thursday
April 24, 2014

Homework Help: Science

Posted by Derrick on Tuesday, March 20, 2012 at 9:32pm.

1.What is refraction? The bending of light as it passes through matter

2.What type of lens would you use to magnify your view of a butterfly?
Concave

3.What is a sound wave?
Sound waves are waves of energy moving through matter.Sound waves are vibrations of molecules,molecules must be present for sound to travel

4.If a bright,loud,explosion took place in space, would it be seen or heard on Earth?
It would be seen if it wasnt covered up with something but it wont be heard because sound needs material such as air or water to travel through

5.Which part of the eye has cells that change light energy to nerve impulses?
A.iris
B.blind spot
C.lens
D.retina
D

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