All Flashcards
Compare and contrast radio waves and gamma rays in terms of wavelength, frequency, and energy.
Radio Waves: Longest wavelength, lowest frequency, lowest energy. Gamma Rays: Shortest wavelength, highest frequency, highest energy.
Compare and contrast the effects of high-frequency and low-frequency electromagnetic waves on living tissue.
High-Frequency (UV, X-rays, Gamma rays): High energy, can be harmful, cause ionization. Low-Frequency (Infrared, Microwaves, Radio waves): Lower energy, generally not harmful, cause heating.
Label the electric field, magnetic field, and direction of propagation in a diagram of an electromagnetic wave.
1: Electric Field, 2: Magnetic Field, 3: Direction of Propagation
How are electromagnetic waves generated?
Electromagnetic waves are generated by the vibration of charged particles, which creates oscillating electric and magnetic fields that propagate through space.
Describe how to calculate frequency given wavelength and speed of light.
- Recall the formula:
- Rearrange the formula to solve for frequency:
- Substitute the values of the speed of light (c) and wavelength (λ) into the formula.
- Calculate the frequency (f).