Meteorology and Weather Instruments

Sarah Rowley from the Witte Museum introduces weather stations and the tools meteorologists use to study weather. She explains how thermometers measure temperature through thermal expansion and contraction, and describes the function of bi-metal strip thermometers. The video also covers weather vanes and anemometers for measuring wind direction and speed, and rain gauges for tracking rainfall. Viewers are encouraged to build their own backyard weather stations.

What is the primary role of meteorologists?

• To analyze ocean currents

• To study the stars and planets

• To predict earthquakes

• To study and forecast weather conditions

What does the 'therm' in thermometer refer to?

• Pressure

• Heat

• Sound

• Light

How does a liquid thermometer work?

• By measuring air pressure

• By using electrical signals

• Through magnetic fields

• By thermal expansion and contraction of liquid

What is unique about a bi-metal strip thermometer?

• It measures humidity instead of temperature

• It uses a single metal that changes color

• It uses two metals that expand at different rates

• It relies on digital sensors

What happens to a bi-metal strip when it is heated?

• It contracts and becomes shorter

• It changes color

• It expands and changes shape

• It emits light

What is the purpose of a weather vane?

• To measure temperature

• To indicate wind direction

• To predict rainfall

• To measure humidity

How does a cup anemometer measure wind speed?

• By detecting sound waves

• By using a digital display

• By counting the rotations of cups

• By measuring temperature changes

What additional feature does some anemometers have to measure wind direction?

• A thermometer

• A compass

• A barometer

• A hygrometer

What is the main function of a rain gauge?

• To predict weather patterns

• To measure wind speed

• To track temperature changes

• To collect and measure rainfall

Why is it important to measure rainfall with a rain gauge?

• To predict wind patterns

• To determine the amount of sunlight

• To track water levels in aquifers

• To measure air pressure