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Waves (D1.1: Waves Transfer Energy (Earthquake wave (a sudden release of…
Waves
D1.1: Waves Transfer Energy
Medium: any substance that a wave moves through (i.e. water, the ground, rope)
Materials and waves
Earthquake wave
a sudden release of energy that has built up in rock as a result of the surrounding rock pushing and pulling on it
When these two forces cause the rock to break away and move, the energy is transferred as a wave through the ground
Mechanical waves: waves that transfer energy through matter
Water wave
needs forces
if you put your finger in water the force of your finger and the force of the water rushing back sends waves across the pool
Energy and waves
Rope wave
If a rope is tied to a doorknob than need opposite forces to make the rope go up and down
Waves can be classified by how they move
Transverse waves
Wave
wave: a disturbance that transfers energy from one place to another
Longitudinal waves
A wave is a disturbance
Forces and Waves
forces can cause a disturbance sending a wave through the material
D1.2: Waves Have Measurable Properties
wavelength
frequency
amplitude
How frequency and wavelength are related
trough
graphing wave properties
crest
Wave speed can be measured? Calculated?
Measuring wave properties
Speed equals wavelength times frequency
Waves have amplitude, wavelength, and frequency
D1.3: Waves Behave In Predictable Ways
Waves interact with other waves
Interference
constructive
destructive
Diffraction
Waves adding together
Refraction
Reflection
Waves interact with materials
Waves canceling each other out