Learning Outcomes:
The student will:
| Just click the show checkbox and drag the ruler left or right. If the
show box is unchecked, you can drag the ruler as desired, type the correct value into the
textField, press ENTER, and see your test result.
Linked source: Vernier
Vernier
Calipers
- Ron Blond
|
How to read a caliper
The caliper consists of two scales. The first and main one is just a normal ruler, the
second, smaller one, allows a precise determination of a number between divisions on the
main scale. The first tick of the smaller scale indicates the size of the object on the
calibers main scale, say 4.5 in our case. Now find the first tick on the slider scale that
lines up perfectly with a tick on the main scale. This tick gives you the second digit
after the decimal point.
Micrometer
Calipers - Ron Blond
|
Wheatstone Bridge
Measure an unknown resistance
The Wheatstone bridge is used to determine an unknown resistance (Rx in
our case) by adjusting a known resistance so that the measured current is zero. To make it
more fun, you can measure voltage and current at any places in the circuit below. Just
drag the plus and minus connectors of the multimeter to any place on the wire. The
variable resistor at R2 can be changed either by dragging the green slider or by typing a
number in the text field below.
Tip: To determine the resistance put one connector each at the upper and lower corner of
the rhombus, put the meter to the most sensitive voltage setting and determine the
resistance R2 at which there flows no current through the multimeter. In this case the
formula for Rx is given by Rx=(R1/R2)*R4.
source: Wheatstone Bridge |
|
|
area, capacity, circumference, length, mass, pi, volume, revolution
|
Prerequisite Skills:
| Term |
Definition/Explanation |
| length |
the measured distance of longer side of an object |
| width |
the measured distance of shorter side of an object |
| height |
the distance of an object from top to bottom or back to front |
| depth |
another name for thickness or height |
| thickness |
another name for depth or height |
| perimeter |
the length of a boundary around a closed figure |
| circumference |
distance around a circle. |
| Tool |
Appropriate SI Units |
| ruler |
mm, cm, dm, m |
| tape measure |
mm, cm, dm, m |
| odometer |
km |
| measuring cup |
mL, L |
| balance scale |
mg, g, kg, tonne |
| spring scale |
N |
| protractor |
degree (o) |
| thermometer |
oC |
| voltmeter |
volts |
| ammeter |
amps |
| ohmeter |
ohms |
| Length |
10 millimeters (mm) = 1 centimeter (cm)
10 centimeters (cm) = 1 decimeter (dm)
10 decimeters (dm) = 1 meter (m)
10 meters (m) = 1 dekameter (dam)
10 dekameters (dam) = 1 hectometer (hm)
10 hectometers (hm) = 1 kilometer (km)
1 centimeter (cm) = 10 millimeters (mm)
1 meter (m) = 100 centimeters (cm) = 1000 millimeters (mm)
1 kilometer (km) = 1000 meters (m) |
| Capacity |
10 milliliters (mL) = 1 centiliter (cL)
10 centiliters (cL) = 1 deciliter (dL)
10 deciliters (dL) = 1 liter (L)
10 liters (L) = 1 dekaliter (daL)
10 dekaliters (daL) = 1 hectoliter (hL)
10 hectoliters (hL) = 1 kiloliter (kL |
| Mass |
10 milligrams (mg) = 1 centigram (cg)
10 centigrams (cg) = 1 decigram (dg)
10 decigrams (dg) = 1 gram (g)
10 grams (g) = 1 dekagram (dag)
10 dekagrams (dag) = 1 hectogram (hg)
10 hectograms (hg) = 1 kilogram (kg)
1000 kilograms (kg) = 1 metric ton (t) |
length |
km hm dam m
dm cm mm |
mass (weight) |
kg hg dag g dg cg mg |
capacity (volume) |
kL hL daL L dL cL mL |
The
conversion rules are the same for all of these units.
-
underline the unit you are starting with
-
underline the unit you are converting to
count the number of units left or right and move the decimal the same
number of spaces.
Example:
32.5 km = __________ cm
km hm dam m dm cm mm
→ 1 2 3 4 5
To get from km to cm, you are moving 5 spaces to the
right. When we
move the decimal 5 decimal places to the right in 32.5 we have the
following conversion:
32.5 km = 3 250 000 cm |
Units
Converter - awesome range of SI units
IFP :
Metric Conversion Tables
PNEUMOFORE
UNIT CONVERTER (JAVA)
Java
Boutique, The Ultimate Java Applet Resource - ConversionApplet
The
WWW Unit Converter
Coolnerds JavaScript Conversion Table
- can modify for specific needs
Circle Problems: Grade 7 Lesson 31.02
12.04 Adding of Integers:
Grade 7 Lesson 12.04
12.05 Subtracting Integers:
Grade 7 Lesson 12.05
Multiplying and Dividing
Integers: Grade 7 Lesson 12.06 |
