Answer:
1. visible light
- the light that humans can see - between 700 nanometers and 400 nanometers
2. ultraviolet waves (UV Rays)
- smaller frequency and higher energy than visible light- between 400 nanometers and 10 nanometers
- the sun emits UV rays - they cause sunburn
3. X-rays
- higher energy and frequency than UV rays
- X-rays can pass through skin and flesh, but not through bone, so they are used to examine bones
