WONDER #1246: Can the Sun Help To Kill Germs?
Question 1 of 3
<p class=\"FreeForm\"><span style=\"font-size: 10.0pt; font-family: \'Century Gothic\';\">What type of light from the Sun can kill more than 99% of germs?</span></p>
- visible
- ultraviolet
- radioactive
- infrared
Question 2 of 3
<p class=\"FreeForm\"><span style=\"font-size: 10.0pt; font-family: \'Century Gothic\';\">Ultraviolet light can be effective in killing germs if it causes mutations in what?</span></p>
- the atmosphere
- the cell membrane of germs
- the DNA of germs
- the Earth\'s surface
Question 3 of 3
<p class=\"FreeForm\"><span style=\"font-size: 10.0pt; font-family: \'Century Gothic\';\">What wavelength of ultraviolet light is most effective at killing germs?</span></p>
- 254 nanometers
- 54 nanometers
- 154 nanometers
- 452 nanometers
Check your answers online at https://www.wonderopolis.org/wonder/can-the-sun-help-to-kill-germs.