IAPS Waves Flashcards
What type of wave is a sound wave?
longitudinal wave
What waves require a medium to travel though?
Electromagnetic waves
What is the amplitude of a wave?
distance between the resting position and the maximum displacement of the wave.
What waves has the highest frequency?
Gamma rays
What is the speed of light in a vacuum?
300,000 km/s
Which type of wave is used in communication technologies like cell phones and radios?
Radio waves
What is the reflection of sound waves called?
Echo
What is the law of reflection?
The angle of incidence equals the angle of reflection
What is not a property of a wave?
mass
What is the unit of measurement for sound intensity?
Decibles(dB)
What is the speed of sound in air at room temp.?
343 meters per second
What is the frequency range of human hearing?
20 Hz to 20,000 Hz
What is the unity of measurement for sound frequency?
Hertz(Hz)
What is the term for the bending of sound waves around obstacles?
Diffraction
What is the term for the permanent hearing damage caused by exposure to loud noise?
Noise-induced hearing loss
What is the maximum exposure time to sounds at 90 dB before hearing damage can occur?
8 hours
What is the maximum exposure time to sounds at 100 dB before hearing damage can occur?
2 hours
Which type of transmission uses a continuous signal to transmit information?
Analog transmission
Which type of transmission is more resistant to noise and interference?
Digital transmission
Which type of transmission is more bandwidth-efficient?
Both analog and digital transmission
Which type of electromagnetic radiation has the longest wavelength?
Radio waves
Which type of electromagnetic radiation is used in medical imaging to produce images of bones and internal organs?
X-rays
Which type of electromagnetic radiation is responsible for sunburn and skin damage?
Ultraviolet radiation
What are some other measures to protect against UV radiation besides sunscreen?
-wearing a hat and sunglasses
-Seeking shade during peak sun hours
-Apply sunscreen with the proper SPF early and often
What is the risk of overexposure to UV radiation?
Skin cancer and premature aging of the skin.
