Question

open - ended questions: answer the following questions in complete sentences.

1. explain how convection affects weather patterns on earth.
2. describe the differences in weather between a high pressure system and a low pressure system.
3. identify three elements of weather and explain how each one can be observed or measured.

Explanation:

1. Convection occurs when warm air near the Earth's surface heats up, becomes less dense, and rises. As it rises, it cools and the water vapor in it condenses to form clouds, which can lead to various weather - related phenomena like precipitation.
2. In a high - pressure system, air is sinking. This leads to clear skies and generally fair weather as the sinking air suppresses cloud formation. In a low - pressure system, air is rising. Rising air causes cloud formation and often leads to precipitation and stormy weather.
3. Temperature: Can be measured using a thermometer. Humidity: Can be measured with a hygrometer. Wind: Can be observed by watching the movement of objects like flags or leaves, and measured with an anemometer for wind speed and a wind vane for wind direction.

Answer:

1. Convection causes warm air to rise, cool, and condense, forming clouds which can lead to different weather conditions such as precipitation.
2. High - pressure systems have sinking air and clear skies while low - pressure systems have rising air, cloud formation, and often stormy weather.
3. Temperature: Measured with a thermometer. Humidity: Measured with a hygrometer. Wind: Observed by watching moving objects and measured with an anemometer for speed and a wind vane for direction.