Millibar (mb)

The video tutorial explains the concept of pressure, focusing on the millibar as a unit of measurement. It describes a millibar as one thousandth of a bar and equivalent to a pressure of 1g per square centimeter. The tutorial also highlights that the average atmospheric pressure at sea level is 1013 millibars.

What is the relationship between a bar and pressure?

• A millibar is equivalent to 1013 bars.

• A bar is equivalent to 1g per square centimeter.

• A millibar is one thousandth of a bar.

• A bar is one thousandth of a millibar.

How is one millibar defined in terms of pressure?

• 1g per square centimeter

• 10g per square centimeter

• 1g per square meter

• 100g per square centimeter

Which of the following is true about millibars?

• They are used to measure temperature.

• They are equivalent to 1g per square meter.

• They are one thousandth of a bar.

• They are used to measure volume.

What is the average atmospheric pressure at sea level in millibars?

• 1020 millibars

• 1005 millibars

• 1000 millibars

• 1013 millibars

What unit is used to express average atmospheric pressure at sea level?

• Pascals

• Millibars

• Bars

• Newtons