Wednesday, 21 May 2014

Question About Echolocation

1.) What do bats,whales,and dolphins have in conman?

2.) What is the system that bats use to locate  objects in the drake called ?

3.) How do whales, bats and many other animals locate special objects? 

Thursday, 8 May 2014

Facts About Sound

Sound is a type of energy made by vibrations.Sound is all around us, all the time.Every where you go you can still hear sound like the singing bird or the wind blowing into the trees or even the cars going past.

Sound and waves come from vibrations the cool thing about that is how your ears give you the ability to hear them soft or loud.Did you know that the speed of sound is 767 miles per hour (1,230 kilometres per hour).

When there is no sound, the tiny particles of air are spread evenly. A sound travels in high pressers,where the particles are closer together,with regions of low pressure,where they are far apart.