Difference between revisions of "Wave Speed"
| Line 5: | Line 5: | ||
===About Wave Speed=== | ===About Wave Speed=== | ||
: [[Wave Speed]] is measured in [[metres per second]]. | : [[Wave Speed]] is measured in [[metres per second]]. | ||
| + | : The '''wave speed''' states how quickly [[energy]] and [[information]] can be transferred by a [[wave]]. | ||
| + | |||
| + | ===Equation=== | ||
| + | ====Equation 1==== | ||
| + | <math>v = \frac{x}{t}</math> | ||
| + | |||
| + | Where: | ||
| + | |||
| + | v = '''Wave Speed''' | ||
| + | |||
| + | x = distance traveled | ||
| + | |||
| + | t = time taken to travel | ||
| + | |||
| + | ====Equation 2==== | ||
| + | |||
| + | <math>v = f \lambda</math> | ||
| + | |||
| + | <math>v = f \times \lambda</math> | ||
| + | |||
| + | Where: | ||
| + | |||
| + | v = '''Wave Speed''' | ||
| + | |||
| + | f = [[frequency]] of the [[wave]] | ||
| + | |||
| + | λ = [[wavelength]] of the [[wave]] | ||
| + | |||
| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | [[Wave Speed]] is how quickly a [[wave]] travels through a [[medium]]. | ||
| + | |||
| + | ===About Wave Speed=== | ||
| + | : '''Wave speed''' is a [[scalar]] because it has [[magnitude]] only. | ||
| + | : The [[SI Unit]] of [[Wave Speed|wave speed]] is [[metres per second]]. | ||
: The '''wave speed''' states how quickly [[energy]] and [[information]] can be transferred by a [[wave]]. | : The '''wave speed''' states how quickly [[energy]] and [[information]] can be transferred by a [[wave]]. | ||
| Line 10: | Line 45: | ||
====Equation 1==== | ====Equation 1==== | ||
:<math>v = \frac{x}{t}</math> | :<math>v = \frac{x}{t}</math> | ||
| + | |||
Where: | Where: | ||
| − | + | ||
| − | + | v = '''Wave Speed''' | |
| − | + | ||
| + | x = distance traveled | ||
| + | |||
| + | t = time taken to travel | ||
====Equation 2==== | ====Equation 2==== | ||
| − | + | <math>v = f \lambda</math> | |
| − | + | ||
Where: | Where: | ||
| − | + | ||
| − | + | v = '''Wave Speed''' | |
| − | + | ||
| + | f = [[frequency]] of the [[wave]] | ||
| + | |||
| + | λ = [[wavelength]] of the [[wave]] | ||
| + | |||
| + | ===Example Calculations=== | ||
| + | {| class="wikitable" | ||
| + | | style="height:20px; width:300px; text-align:center;" |Question | ||
| + | | style="height:20px; width:300px; text-align:center;" |Question | ||
| + | |- | ||
| + | | style="height:20px; width:300px; text-align:left;" |'''1. State the known quantities''' | ||
| + | | style="height:20px; width:300px; text-align:left;" |'''1. State the known quantities''' | ||
| + | |- | ||
| + | | style="height:20px; width:300px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve (Maths)|solve]].''' | ||
| + | | style="height:20px; width:300px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve (Maths)|solve]].''' | ||
| + | |} | ||
Revision as of 14:12, 18 February 2019
Contents
Key Stage 3
Meaning
Wave Speed is how quickly a wave travels through a medium.
About Wave Speed
- Wave Speed is measured in metres per second.
- The wave speed states how quickly energy and information can be transferred by a wave.
Equation
Equation 1
\(v = \frac{x}{t}\)
Where:
v = Wave Speed
x = distance traveled
t = time taken to travel
Equation 2
\(v = f \lambda\)
\(v = f \times \lambda\)
Where:
v = Wave Speed
λ = wavelength of the wave
Key Stage 4
Meaning
Wave Speed is how quickly a wave travels through a medium.
About Wave Speed
- Wave speed is a scalar because it has magnitude only.
- The SI Unit of wave speed is metres per second.
- The wave speed states how quickly energy and information can be transferred by a wave.
Equation
Equation 1
\[v = \frac{x}{t}\]
Where:
v = Wave Speed
x = distance traveled
t = time taken to travel
Equation 2
\(v = f \lambda\)
Where:
v = Wave Speed
λ = wavelength of the wave
Example Calculations
| Question | Question |
| 1. State the known quantities | 1. State the known quantities |
| 2. Substitute the numbers into the equation and solve. | 2. Substitute the numbers into the equation and solve. |