T6 - Waves Flashcards
What is a transverse wave?
Oscillation are perpendicular to direction of energy transfer
What is a longitudinal wave?
Oscillation are parallel to direction of energy transfer
Feature of waves?
the wave travels and not particles
What is amplitude of a wave?
from middle to top and middle to bottom
What is the wavelength?
distance from the same spot on the wave
Feature of longitudinal waves? x2
-compression
-rarefaction
What is frequency?
number of waves passing a point each second
What is the period of a point?
time for 1 wave to pass a point
What can happen when a wave hits an object? x4
-wave transmitted
-absorbed
-reflected
-refracted
What do sound waves trigger in solids?
vibrations
What is the range of the normal human hearing?
20 hz - 20 khz
Feature of sound waves?
can only move through a medium as particles need to vibrate
What is frequency of ultrasound waves?
higher than human hearing
Feature of ultrasound waves?
partially reflect
What are ultrasounds useful for?
measuring distance between boundaries
Uses of ultrasound? x2
-medical imaging
-industrial imaging
How to find distance by ultrasound?
distanced divided by 2
What produces seismic waves?
earthquakes
Types of seismic waves? x2
-P-waves
-S-waves
What types of waves are P-waves?
longitudinal waves
What types of waves are S-waves?
Transverse waves
What can P-waves travel through?
can pass through both solid and liquid
WHat can S-Waves travel through?
solids
WHich wave is faster P-waves or S-waves?
P-waves
Uses of P-waves and S-waves?
show structure and size of earths core
What types of waves are electromagnetic waves?
transverse waves
Order of visible light? x7
-Red
-orange
-yellow
-green
-blue
-indigo
-violet
Electromagnetic spectrum? x7
-Radio
-microwave
-infared
-visible light
-ultraviolet
-x-ray
-gamma
What is the frequency at beginning of EM spectrum?
low
What is the wavelength at beginning of EM spectrum?
long
