# Measuring - PowerPoint PPT Presentation

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Measuring. Objective: At the end of this lesson students will understand and be familiar with basic scientific units of measure. Using a Metric Ruler. In science a metric ruler is used. The units on a metric ruler are called centimeters (cm) and millimeters (mm). The Marks on a R uler.

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Measuring

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## Measuring

Objective: At the end of this lesson students will understand and be familiar with basic scientific units of measure.

### Using a Metric Ruler

• In science a metric ruler is used. The units on a metric ruler are called centimeters (cm) and millimeters(mm).

### The Marks on a Ruler

• Each of the long marks on a metric ruler represents one centimeter (cm).

• Each of the short marks on a metric ruler represents one millimeter (mm).

• There are 10 small marks or millimeters (mm) in every centimeter (cm).

0.8

8

1.1

11

0.4

4

### Liquid Measure

• Scientists use liters (L) and milliliters (mL) to measure liquids.

• 1000 mL is equal to 1 L

### Taking Accurate Liquid Measurements

• When measuring a liquid you must measure at the base of the meniscus.

### Dry Measure

• Scientists measure dry material in grams (g) and milligrams (mg).

• 1000 mg is equal to 1g

### Temperature

• Scientists use the Celsius or Kelvin scale to measure temperature.