A means of transferring energy without transferring matter
1 of 23
Mechanical waves -
Vibrations that travel through a medium
2 of 23
Electromagnetic waves -
Waves that can travel without a medium
3 of 23
Transverse Wave -
The oscillations of a transverse waves are perpendicular to the direction of the energy transfer / (Up and Down) / Light
4 of 23
Longitudinal Waves -
The oscillations of a longitudinal wave are parallel to the direction of energy transferred / It consists of Compressions and Rarefactions / (Side to side) / Sound
5 of 23
What are Compressions and Rarefactions -
Compressions - When the wave fronts are close together / Rarefactions - When the wave fronts are furthest apart
6 of 23
Wave Representation - What does the Graph represent
Waves are displayed on a set of axis / Peaks and troughs = particles Maximum and Minimum displacement
7 of 23
Wavelength -
The distance between the same point on adjacent waves
8 of 23
Amplitude -
The maximum displacement of a point on a wave from rest
9 of 23
Frequency -
The number of complete waves passing a point per second
10 of 23
Wave Period - (Definition + Equation)
The amount of time taken for a full cycle of a wave / Period = 1/Frequency
11 of 23
Wave Speed =
Frequency * Wavelength
12 of 23
What is the speed of sound in air -
330 m/s
13 of 23
What 3 things can happen when a wave hits a boundary -
Absorption - The wave's energy is absorbed / Reflection - The waves bounce back / Transmission - The waves pass through and are refracted
14 of 23
Refraction of Light -
When a wave reaches a more dense boundary, it changes direction (Towards the Normal) / When it enters a more dense medium, the wave slows down and has more wavefronts
15 of 23
Reflection of Light -
Angle of Incidence = Angle of Reflection / A plain mirror perfectly reflects light waves / If the angle of incidence = 0 , Angle of reflection = 0
16 of 23
Specular Reflection -
Parallel waves are reflected in a single direction off a smooth surface
17 of 23
Diffuse Reflection -
Parallel waves are reflected off a rough surface and are scattered
18 of 23
Hearing in Humans - The Ear and Frequency Range
Sound enters ear through ear canal / Waves vibrate the eardrum and the malleus, incus and stapes / The vibrations are turned into electrical impulses in the cochlea / Frequency range = 20Hz - 20,000Hz
19 of 23
Structure of Earth - Layers in Order -
Crust / Mantle / Inner core / Outer core
20 of 23
P Waves (Primary waves) -
Cause initial short tremors / Longitudinal waves
21 of 23
S Waves (Secondary Waves) -
Cause more tremors / travel slowly / Transverse waves
22 of 23
L Waves -
Travel slow / Cause the most damage
23 of 23
Other cards in this set
Card 2
Front
Vibrations that travel through a medium
Back
Mechanical waves -
Card 3
Front
Waves that can travel without a medium
Back
Card 4
Front
The oscillations of a transverse waves are perpendicular to the direction of the energy transfer / (Up and Down) / Light
Back
Card 5
Front
The oscillations of a longitudinal wave are parallel to the direction of energy transferred / It consists of Compressions and Rarefactions / (Side to side) / Sound
Comments
No comments have yet been made