Waves Flashcards
(23 cards)
What do all waves do?
Transfer energy
Name the two different types of waves
Transverse and longitudinal
What is the wave that the particles of the medium move in the same direction as the wave energy transfer
Longitudinal
What is the type of waves that the particles of the medium travel at A right angle to the direction of the wave energy transfer
Transverse
What is the name of the wave that only emits sound waves
Longitudinal
What is the speed of sound in air
340 m/s
What is the speed of light in air
300,000,000 or 3x10 8 m/s
Give an example of light being faster than sound
Thunder I lightning, fireworks.
What is the range of sound waves frequency that humans can hear
20-20,000 Hz
What are sounds with A frequency above 20,000 Hz called
Ultrasounds
What can the reflection of waves including sound and ultrasound be used for.
Detect the depth of the sea bed detect cracks in metal objects.
What is the definition of frequency and equation
Number of waves to pass a point in one second
f= N/t
What is the period of a wave definition
Is the time takes for one wave to pass a point
What does the electromagnetic spectrum do
Transfer energy, transverse waves, all diffract travel at 3x10 8
What is the order of the electromagnetic spectrum
Radio, TV, microwaves, infrared radiation,visible light, ultraviolet, X-rays, gamma radiation
If a wave has a low frequency long wavelength and low energy what part of the electromagnetic spectrum will it be on
Higher end
If a wave has a high frequency shortwavelength and high energy what end will it be on
Lower end
What detects radio and TV waves
An aerial
What are the waves that are detected using photodiodes.
Infrared, visible light, ultraviolet
What are the waves that are detected using photographic film
Visible light, ultraviolet, X-rays, and gamma Rays.
What is refraction of light
When light passes from one medium to another causing a change in speed directionand wavelength
What happens when light goest from a less dense medium to A more dense medium
Refracts toward the normal
What happens to light as it goes from a more dense medium to a less dense medium
Refracts away from the normal
