ELECTROMAGNETIC RADIATION
EXAM 2025 QUESTIONS AND ANSWERS
The range of wavelengths of electromagnetic radiation that the human eye detects. (ROY G BIV)
- ANS visible spectrum
Higher energy radiation just outside the visible spectrum. Causes sunburn and may make some
materials fluoresce. - ANS ultra-violet radiation
Lower energy radiation just outside the visible spectrum. Objects emit this kind of radiation
based on their temperature. - ANS infrared radiation
The distance between one point of a wave and the next identical point on the wave. -
ANS wavelength
A measurement of the number of waves that pass a given point in a certain amount of time. It
depends on the speed of the wave and the wavelength. - ANS frequency
Another measurement of a waves energy. It is the height of a wave or half the distance from
crest to trough. - ANS amplitude
Very high energy (short wavelength) electromagnetic radiation. They pass through flesh and are
used to make images of bones. - ANS X-rays
The longest wavelength electromagnetic radiation. They are used mostly for communication or
by astronomers studying outer space. - ANS radio waves
1 COPYRIGHT © 2025 SIRJOEL ALL RIGHTS RESERVED
EXAM 2025 QUESTIONS AND ANSWERS
The range of wavelengths of electromagnetic radiation that the human eye detects. (ROY G BIV)
- ANS visible spectrum
Higher energy radiation just outside the visible spectrum. Causes sunburn and may make some
materials fluoresce. - ANS ultra-violet radiation
Lower energy radiation just outside the visible spectrum. Objects emit this kind of radiation
based on their temperature. - ANS infrared radiation
The distance between one point of a wave and the next identical point on the wave. -
ANS wavelength
A measurement of the number of waves that pass a given point in a certain amount of time. It
depends on the speed of the wave and the wavelength. - ANS frequency
Another measurement of a waves energy. It is the height of a wave or half the distance from
crest to trough. - ANS amplitude
Very high energy (short wavelength) electromagnetic radiation. They pass through flesh and are
used to make images of bones. - ANS X-rays
The longest wavelength electromagnetic radiation. They are used mostly for communication or
by astronomers studying outer space. - ANS radio waves
1 COPYRIGHT © 2025 SIRJOEL ALL RIGHTS RESERVED
