Weather Measurement Concepts

This lesson explores how to measure different weather elements, including rainfall, temperature, wind direction and speed, air pressure, and cloud cover. It explains the instruments used, such as rain gauges, thermometers, wind vanes, anemometers, and barometers, and the units of measurement for each element. The lesson also highlights the importance of weather measurement for meteorologists to predict future weather conditions.

Why is it important for meteorologists to record the current weather conditions?

• To predict future weather patterns

• To entertain the public

• To create art

• To sell weather instruments

What instrument is used to measure rainfall?

• Anemometer

• Rain gauge

• Barometer

• Thermometer

How is rainfall typically measured?

• Liters

• Inches

• Centimeters

• Millimeters

What is the special property of mercury that makes it useful in thermometers?

• It changes color with temperature

• It is magnetic

• It is a solid metal

• It is the only metal that is liquid at room temperature

Which unit is commonly used in the UK to measure temperature?

• Fahrenheit

• Kelvin

• Degrees Celsius

• Rankine

What does a wind vane measure?

• Humidity

• Wind speed

• Wind direction

• Air pressure

Which instrument is used to measure wind speed?

• Barometer

• Anemometer

• Rain gauge

• Thermometer

What unit is used to measure air pressure?

• Millibars

• Newtons

• Pascals

• Joules

How is cloud cover estimated?

• Using a satellite

• By estimating the fraction of the sky covered

• By counting clouds

• Using a cloudometer

What is the unit used to describe cloud cover?

• Octas

• Degrees

• Millimeters

• Knots