Measurement In science, the Metric system is used. It is a universal measurement system based on...

MeasurementIn science, the Metric system is used. It is a universal measurement system

based on multiples of 10.This makes conversions from one unit

to another much easier.

Measurement Musts

• Use the right basic unit•Measure with the right

accuracy• Estimate one place• ALWAYS write your units

METRIC M K H Dk BASE d c m u

M= Mega Meter d= DeciK= Kilo Liter c= CentiH=Hecto Gram m=

MilliDk= Deka u=

Micro

Basic Units

•Volume = liters (L)• Length = meters (m)•Mass = grams (g)

Accuracy• Measure using the lab equipment that

gives you the most accuracy– Ex: beaker vs. graduated cylinder

Estimating

• Always estimate one place past the accuracy of a measuring device.

• Ex: The smallest unit on this ruler is millimeters (mm).

We would measure to the millimeter, and estimate to the 1/10ths place

How long (cm)?

0 1 2 3 4

How long (cm)?

0 1 2 3 4

Estimate for more accuracy

0 1 2 3 4

How long (cm)?

0 1 2 3 4

How long (cm)?

0 1 2 3 4

Graduated Cylinders

• Measure to the bottom of the meniscus

How much?

50

40

30

How much?

50 * Read the bottom of the

meniscus * Estimate one place 40

30

Conversion of Temperatures

• Fahrenheit to Celsius: C=(F-32)X 5/9

• Celsius to Fahrenheit: F=Cx9/5+32