Chapter 1 Energy

• The energy in our food coms from the sun.
• How is it possible that the Sun gives us energy?


  The sun turns it own mass into radiant energy
• Energy is the ability to do work.
• The law of conservation of energy: energy cannot be made, nor can it be destroyed. Energy can only be transformd.
• How is it possible to communicate with astronauts since there is no air in space?


  They use radios to communicate. Inside the helmet the radio waves are converted to sound .
• Sound is produced when something vibrates.
• bioluminescene= living things that can light up
• An energy source is a source from which useful energy can be extracted or recovered.
• energy saving= less energy loss trough thermal energy