Energy

Lets talk about energy.
Over the last few weeks we have been learning about energy. So what is energy?  The conservation of energy is that energy cannot be created or destroyed it only can be transformed, that means that no matter what thee will always be the same amount of energy in the world. Sound is a form of energy and sound travels. Sound can travel through solids, liquids and air, but sound travels better through solids and liquids than air. Sound travels through air at 332m per second. Sound travels in sound waves. If you get a slinky and get two people to hold each end and one person kind of shakes it you can see how it pulses along to the end and back to the start.

The things that have helped me understand energy and how it works is watching video clips on youtube, having examples shown to me like experiments, reading about it and looking at some pictures.

Are radio waves the same as sound waves?
Do radio waves travel through space?
What happens if sound waves and radio waves hit each other?

I found out some really interesting things about energy.
- I found out that light travels 7 times around the world in one second.
- Sound travels 332m per second through air.
- How lightning and thunder works.
- You can't hear sound in a vacum (because there's no air molecules).
- When sound moves through the air it vibrates the molecules around it and that carries the sound.