GCSE Physics Required Practical: Investigating Mechanical Waves - Revision history

NRJC: /* Method */

2020-01-19T21:45:38Z

‎Method

NRJC at 11:34, 13 April 2019

2019-04-13T11:34:37Z

NRJC: /* Improving Precision */

2019-03-25T09:31:26Z

‎Improving Precision

NRJC: /* Improving Precision */

2019-03-25T09:31:15Z

‎Improving Precision

NRJC: /* Method */

2019-03-20T11:18:02Z

‎Method

NRJC: /* Experiment 2: Waves on a String */

2019-03-20T11:17:19Z

‎Experiment 2: Waves on a String

NRJC: /* Improving Precision */

2019-03-20T11:15:09Z

‎Improving Precision

NRJC at 11:13, 20 March 2019

2019-03-20T11:13:58Z

NRJC: Created page with "==Key Stage 4== ===Meaning=== Investigate the features of mechanical waves. ===Experiment 1: Ripple Tank=== ====Method==== {| class="wikitable" |- |File..."

2019-03-20T11:03:56Z

Created page with "==Key Stage 4== ===Meaning=== Investigate the features of mechanical waves. ===Experiment 1: Ripple Tank=== ====Method==== {| class="wikitable" |- |File..."

New page

==Key Stage 4==
===Meaning===
Investigate the features of [[Mechanical Wave|mechanical waves]].

===Experiment 1: Ripple Tank===
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalRippleTank.png|center|600px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the features of [[Mechanical Wave|mechanical waves]].
|}

: Set up the equipment as shown in the [[diagram]].
#Count the number of [[wave]]s that pass a given point over 10 [[second]]s.
#Divide the number of [[wave]]s by the 10 [[second]]s to find the [[frequency]] of the [[wave]]s.
#[[Measure]] the length of the [[Ripple Tank|ripple tank]] from paddle to end using a [[ruler]].
#Use a [[stopwatch]] to [[time]] how long it takes for a [[wave]] to travel this [[displacement]].
#Use the equation <math>v=\frac{s}{t}</math> to find the [[velocity]] of the [[wave]].
#Use the equation <math>v=f \lambda</math> to find the [[wavelength]] of the [[wave]].

====Improving [[Accuracy]]====
: Count the number of [[wave]]s over a greater period of [[time]] greater than 10 [[second]]s to reduce the effect of [[Human Error|human error]] on the [[frequency]].

====Improving [[Precision]]====
: Counting the number of [[wave]]s over a greater period of [[time]] greater than 10 [[second]]s will create an [[Mean Average|average]] of the [[frequency]] over more [[wave]]s and therefore increasing the [[precision]].

===Experiment 2: Waves on a String===
====Method====
{| class="wikitable"
|-
|[[File:RequiredPracticalRippleTank.png|center|600px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the features of [[Mechanical Wave|mechanical waves]].
|}

: Set up the equipment as shown in the [[diagram]].
#Count the number of [[wave]]s that pass a given point over 10 [[second]]s.
#Divide the number of [[wave]]s by the 10 [[second]]s to find the [[frequency]] of the [[wave]]s.
#[[Measure]] the length of the [[Ripple Tank|ripple tank]] from paddle to end using a [[ruler]].
#Use a [[stopwatch]] to [[time]] how long it takes for a [[wave]] to travel this [[displacement]].
#Use the equation <math>v=\frac{s}{t}</math> to find the [[velocity]] of the [[wave]].
#Use the equation <math>v=f \lambda</math> to find the [[wavelength]] of the [[wave]].

====Improving [[Accuracy]]====
: Count the number of [[wave]]s over a greater period of [[time]] greater than 10 [[second]]s to reduce the effect of [[Human Error|human error]] on the [[frequency]].

====Improving [[Precision]]====
: Counting the number of [[wave]]s over a greater period of [[time]] greater than 10 [[second]]s will create an [[Mean Average|average]] of the [[frequency]] over more [[wave]]s and therefore increasing the [[precision]].

← Older revision		Revision as of 09:31, 25 March 2019
Line 38:		Line 38:
	#Use the equation <math>v=f \lambda</math> to find the [[Wave Speed\|wavespeed]] of the [[wave]].		#Use the equation <math>v=f \lambda</math> to find the [[Wave Speed\|wavespeed]] of the [[wave]].
	#Repeat for different 5 [[frequency\|frequencies]] of the [[wave]].		#Repeat for different 5 [[frequency\|frequencies]] of the [[wave]].
−
−	~~====Improving [[Precision]]====~~
−	~~: Calculate an [[Mean Average\|average]] for the [[Wave Speed\|wave speed]] over a greater number of [[results]] to reduce the effect of [[Random Error\|random error]]s, improving the [[precision]].~~

@@ Line 30: / Line 30: @@
 {| class="wikitable"
 |-
-|[[File:StringWave.png|center|500px]]
+|[[File:StringWave.png|center|600px]]
 |-
 | style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the features of a [[Waves on a String|wave on a string]].

@@ Line 41: / Line 41: @@
 #Use the equation <math>v=f \lambda</math> to find the [[Wave Speed|wavespeed]] of the [[wave]].
 #Repeat for different 5 [[frequency|frequencies]] of the [[wave]].
 ====Improving [[Precision]]====
-: Calculate an [[Mean Average|average]] for the [[Wave Speed|wave speed]] over a greater number of [[results]] to give a more [[precise]] number.
+: Calculate an [[Mean Average|average]] for the [[Wave Speed|wave speed]] over a greater number of [[results]] to reduce the effect of [[Random Error|random error]]s, improving the [[precision]].

← Older revision		Revision as of 11:15, 20 March 2019
Line 46:		Line 46:

	====Improving [[Precision]]====		====Improving [[Precision]]====
−	: Calculate an [[Mean Average\|average]] for the [[Wave Speed\|wave speed]] over a greater number of [[results]] to give a more [[precise]] number ~~by reducing the [[uncertainty]]~~.	+	: Calculate an [[Mean Average\|average]] for the [[Wave Speed\|wave speed]] over a greater number of [[results]] to give a more [[precise]] number.

@@ Line 8: / Line 8: @@
 {| class="wikitable"
 |-
-|[[File:RequiredPracticalRippleTank.png|center|600px]]
+|[[File:RippleTank.png|center|600px]]
 |-
 | style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the features of [[Mechanical Wave|mechanical waves]].

@@ Line 1: / Line 1: @@
 ==Key Stage 4==
 ===Meaning===
 Investigate the features of [[Mechanical Wave|mechanical waves]].

@@ Line 22: / Line 22: @@
 ====Improving [[Accuracy]]====
 : Count the number of [[wave]]s over a greater period of [[time]] greater than 10 [[second]]s to reduce the effect of [[Human Error|human error]] on the [[frequency]].
 ===Experiment 2: Waves on a String===

@@ Line 30: / Line 30: @@
 {| class="wikitable"
 |-
-|[[File:RequiredPracticalRippleTank.png|center|600px]]
+|[[File:StringWave.png|center|500px]]
 |-
-| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the features of [[Mechanical Wave|mechanical waves]].
+| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of the [[apparatus]] used to investigate the features of a [[Waves on a String|wave on a string]].
 |}
 : Set up the equipment as shown in the [[diagram]].
-#Count the number of [[wave]]s that pass a given point over 10 [[second]]s.
+#Adjust the [[frequency]] of the [[oscillator]] until it produces a clear [[wave]] on the string.
-#Divide the number of [[wave]]s by the 10 [[second]]s to find the [[frequency]] of the [[wave]]s.
+#Record the [[frequency]] of the [[oscillator]].
-#[[Measure]] the length of the [[Ripple Tank|ripple tank]] from paddle to end using a [[ruler]].
+#[[Measure]] the [[wavelength]] of the [[wave]] using a [[ruler]].
-#Use a [[stopwatch]] to [[time]] how long it takes for a [[wave]] to travel this [[displacement]].
+#Use the equation <math>v=f \lambda</math> to find the [[Wave Speed|wavespeed]] of the [[wave]].
-#Use the equation <math>v=\frac{s}{t}</math> to find the [[velocity]] of the [[wave]].
+#Repeat for different 5 [[frequency|frequencies]] of the [[wave]].
 ====Improving [[Accuracy]]====
@@ Line 47: / Line 46: @@
 ====Improving [[Precision]]====
-: Counting the number of [[wave]]s over a greater period of [[time]] greater than 10 [[second]]s will create an [[Mean Average|average]] of the [[frequency]] over more [[wave]]s and therefore increasing the [[precision]].
+: Calculate an [[Mean Average|average]] for the [[Wave Speed|wave speed]] over a greater number of [[results]] to give a more [[precise]] number by reducing the [[uncertainty]].