My Opinion Of The 200 Girls Held Hostage By "Boko Haram"

The media have been doing what they believe is helping the situation of the 200 girls held hostage. In my opinion they are just informing people about this situation and not doing anything about it physically.

Swim Safety Advertisement

Water Safety Calvin And Sebastian from Team 5 PES on Vimeo.

Calvin Sound Explination

This is me and my groups first attempt at explaining sound.

Like many terms in science, Sound is formed from a vibration and from mechanical waves. in everyday use, sound refers to what the ear can hear. Sound can be pleasant unpleasant hard or soft high or low. The scientific meaning of sound is based on an understanding interaction between matter and energy, what the brain hears of sound or interprets gets its start from the energy of moving molecules of air.

When a guitar string  vibrates energy comes from vibrations. these oscillating sound waves can move through substances like water dirt or solid rock.

I don't really know if it's entirely true but it's what I heard.

When I find out a bit more I will tell you.

Cool Sound Facts

the speed of sound is slower than the speed of light.
link

 sound is a piece of vibration that spreads in a wave of pressure and displacement.
link

sometimes sound can only pass  vibrations with frequencies within range of human hearing or certain types of animals.
LINK

Here are some facts about sound I learnt, there are one of three links on every fact. Click on it to go there.

Inference

Calvin inference from Team 5 PES on Vimeo.