Predicting Weather Changes

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Meteorologist Noun

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[mee-tee-uh-RAHL-uh-jist]

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Meteorologist

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A scientist who studies and predicts weather by collecting and analyzing data from various sources.

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Example: A weather map showing high and low-pressure areas helps meteorologists predict weather.

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Forecast Noun

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[FOR-kast]

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Forecast

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A prediction about what the weather will be like in the future, based on current data analysis.

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Example: A weather map showing high and low pressure areas helps predict future weather.

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Air Pressure Noun

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[AIR PRESH-er]

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Air Pressure

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The force exerted onto a surface by the weight of the air in the atmosphere above it.

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Example: The image uses a seesaw to show how air pressure is higher at lower altitudes and lower at higher altitudes.

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Barometer Noun

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[buh-ROM-i-ter]

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Barometer

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A scientific instrument used for measuring atmospheric pressure to help forecast changes in the weather.

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Example: The image shows a barometer with mercury, illustrating how atmospheric pressure is measured using Torricelli's experiment.

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Weather Satellite Noun

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[WETH-er SAT-uh-lite]

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Weather Satellite

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A machine orbiting Earth that collects data and images of the atmosphere for weather prediction.

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Example: A weather satellite in orbit collects data and images of Earth's atmosphere for weather prediction.

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Jet Stream Noun

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[JET streem]

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Jet Stream

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A fast-flowing, narrow current of air found in the upper levels of the Earth's atmosphere.

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Example: The image shows a jet stream as a fast-flowing air current, affecting weather by separating warmer and colder air masses.

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Ocean Current Noun

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[OH-shun KUR-ent]

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Ocean Current

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A continuous, directed movement of seawater that transports heat and influences local weather conditions.

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Example: Arrows show ocean currents moving warm and cold water, affecting weather patterns.

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Weather Map Noun

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[WETH-er map]

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Weather Map

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A model that uses special symbols to show the weather conditions over a large area at a time.

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Example: This weather map uses symbols like H and L to show high and low pressure areas, helping predict weather changes.

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Isobar Noun

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[EYE-so-bar]

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Isobar

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A line drawn on a weather map that connects points having the same atmospheric pressure.

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Example: Isobars on the map connect points of equal atmospheric pressure, helping predict weather changes.

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Isotherm Noun

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[EYE-so-thurm]

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Isotherm

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A line drawn on a weather map or chart that connects points having the same temperature.

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Example: Isotherms are lines on this weather map connecting places with the same temperature.