2012年10月17日星期三

Science Notes I

1.  Light helps us to see things.
2. Sun is the main source of light.
3. Light travels in a straight line.
    Example:
Can see the light


Cannot see the light

4. The formation of shadow is due to the disability of an object to let all light pass through it.
5.  Object that do not let all light pass through are called opaque object.  Example:  pencil, basketball.

  


6.  Object that allow a part of light to pass through are called translucent objects.  Example:  translucent glass.



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