Measuring Length and Temperature: Using a Metric Ruler

The video tutorial explains how to use metric rulers effectively by following simple rules. It covers the importance of using the correct edge of the ruler, handling damaged rulers, and aligning objects for accurate measurement. The tutorial demonstrates measuring a feather, emphasizing precision by noting millimeter marks. It also explains the use of decimals in the metric system, highlighting the importance of recording both the number and unit in measurements.

What should you do if the end of a metric ruler is damaged?

• Use the 1 cm mark and subtract 1 cm from your measurement.

• Use the 0 mark and add 1 cm to your measurement.

• Ignore the damage and measure as usual.

• Use the opposite edge of the ruler.

When measuring an object, why is it important to look straight down at the ruler?

• To check if the ruler is metric or English.

• To ensure the ruler is not bent.

• To make sure the ruler is clean.

• To avoid parallax error and get an accurate reading.

If a feather measures 12 centimeters and 2 millimeters, how can this be expressed in decimal form?

• 12.2 millimeters

• 12.02 millimeters

• 12.02 centimeters

• 12.2 centimeters

What is the base number of the metric system?

• 10

• 5

• 12

• 100

Why is it critical to record the unit along with the measurement number?

• To comply with international standards.

• To make the measurement look more professional.

• To avoid confusion and ensure clarity in communication.

• To ensure the measurement is in metric units.