|
Size: 1268
Comment:
|
Size: 2272
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 5: | Line 5: |
'''Topic and Concept:''' Measurement, [:Measurement: 1A10. Basic Units] |
|
| Line 11: | Line 14: |
| attachment:StandardMasses-03-400.jpg | attachment:BasicUnits-03-400.jpg |
| Line 13: | Line 16: |
| '''Description:''' | '''Abstract:''' |
| Line 15: | Line 18: |
| Show students a 1 lb mass and a 1 kg mass. | Show students a 1 lb mass and a 1 kg mass. |
| Line 22: | Line 25: |
| ||Standard Mass Set||ME, Bay [:MechanicsCabinetBayA1:A1], Shelf #4||[:StandardMassSet:1A10.21] || | |
| Line 24: | Line 28: |
| '''Setup:''' | * N/A |
| Line 27: | Line 30: |
| 1. N/A | '''Setup and Procedure:''' 1. Set out the above equipment. 1. Compare the 1 lb mass to a 1 kg mass, by placing the one pound mass on a balance with the equivalent mass in grams on the other side. |
| Line 30: | Line 36: |
| 1. N/A | * N/A |
| Line 33: | Line 39: |
| '''Demonstration:''' | '''Discussion:''' |
| Line 37: | Line 43: |
| ||attachment:1LBMass-01-250.jpg||attachment:KGMass-02-250.jpg|| | The SI unit of mass, the kilogram, is defined as the mass of a specific platinum iridium alloy cylinder kept at the International Bureau of Weights and Measures at Sevres, France. This mass standard was established in 1901, and there has been no change since that time because platinum iridium is an unusually stable alloy. The Sevres cylinder is 3.9 centimeters in diameter and 3.9 centimeters in height. A duplicate is kept at the National Bureau of Standards in Gaithersburg, Md. ||attachment:StandardMasses-03-250.jpg||attachment:1LBMass-01-250.jpg||attachment:KGMass-02-250.jpg|| '''Videos:''' * [https://www.youtube.com/user/LectureDemostrations/videos?view=1 Lecture Demonstration's Youtube Channel] |
[:PiraScheme#Mechanics: Table of Mechanics Demonstration] |
[:MEEquipmentList: List of Mechanics Equipment & Supplies] |
[:Demonstrations:Lecture Demonstrations] |
Standard Masses, 1A10.20
Topic and Concept:
- Measurement, [:Measurement: 1A10. Basic Units]
Location:
Cabinet: [:MechanicsCabinet:Mechanic (ME)]
Bay: [:MechanicsCabinetBayA3:(A3)]
Shelf: #1
attachment:BasicUnits-03-400.jpg
Abstract:
Show students a 1 lb mass and a 1 kg mass.
Equipment |
Location |
ID Number |
|
|
|
1 lb Mass |
ME, Bay [:MechanicsCabinetBayA3:A3], Shelf #1 |
|
1 kg Mass |
ME, Bay [:MechanicsCabinetBayB1:B1], Shelf #3 |
|
Double Pan Balance |
ME, Bay [:MechanicsCabinetBayB2:B2], Shelf #2 |
|
Standard Mass Set |
ME, Bay [:MechanicsCabinetBayA1:A1], Shelf #4 |
[:StandardMassSet:1A10.21] |
Important Setup Notes:
- N/A
Setup and Procedure:
- Set out the above equipment.
- Compare the 1 lb mass to a 1 kg mass, by placing the one pound mass on a balance with the equivalent mass in grams on the other side.
Cautions, Warnings, or Safety Concerns:
- N/A
Discussion:
A 1 lb mass and a 1 kg mass is set out for the students to compare. One can use a double pan balance to compare there mass.
The SI unit of mass, the kilogram, is defined as the mass of a specific platinum iridium alloy cylinder kept at the International Bureau of Weights and Measures at Sevres, France. This mass standard was established in 1901, and there has been no change since that time because platinum iridium is an unusually stable alloy. The Sevres cylinder is 3.9 centimeters in diameter and 3.9 centimeters in height. A duplicate is kept at the National Bureau of Standards in Gaithersburg, Md.
attachment:StandardMasses-03-250.jpg |
attachment:1LBMass-01-250.jpg |
attachment:KGMass-02-250.jpg |
Videos:
[https://www.youtube.com/user/LectureDemostrations/videos?view=1 Lecture Demonstration's Youtube Channel]
References:
- List any references
[:Instructional:Home]