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Use the table to answer the question. Day Observations 1 sunny and warm 2 cloudy and rainy 3 drop in temperature 4 clear skies and cold temperatures A student tracks the daily weather. The student’s observations are logged in the table. Which factor in the atmosphere best explains the student’s observations? (1 point) Responses A warm air mass replaced a cold air mass. A warm air mass replaced a cold air mass. A warm front moved into the area. A warm front moved into the area. High levels of moisture are contained within an air mass. High levels of moisture are contained within an air mass. A cold front moved into the area.

9 answers

Based on the observations in the table, the best explanation for the student's observations is: A cold front moved into the area.

Here's the reasoning:

  1. The observation of "sunny and warm" indicates that the day likely had a warm air mass present.
  2. The "cloudy and rainy" observation suggests that the weather conditions were changing, typically associated with a cold front.
  3. The "drop in temperature" reinforces the idea that a cold air mass replaced the warmer air mass, characteristic of a cold front.
  4. Finally, the "clear skies and cold temperatures" indicates that the cold front has passed, leading to clearer weather.

Therefore, the pattern observed aligns with the movement of a cold front.

A meteorologist uses a weather map to explain an upcoming change in weather. The map shows a blue line with triangles approaching a red line with semicircles. Based on the map, which weather prediction is most valid? (1 point) Responses There is no chance of precipitation in the forecast. There is no chance of precipitation in the forecast. Warm temperatures will replace cold temperatures. Warm temperatures will replace cold temperatures. A significant drop in temperature will occur across the area. A significant drop in temperature will occur across the area. Humidity levels will rise.

Based on the description of the weather map showing a blue line with triangles (representing a cold front) approaching a red line with semicircles (representing a warm front), the most valid weather prediction is: A significant drop in temperature will occur across the area.

Here's the reasoning:

  • The blue line with triangles indicates a cold front, which typically brings colder air that replaces the warmer air ahead of it (represented by the red line with semicircles).
  • When a cold front moves into an area, it usually leads to a drop in temperature as the colder air mass arrives.

Therefore, the prediction of a significant drop in temperature aligns with the weather patterns associated with the movement of a cold front.

Which factor in the atmosphere is most responsible for changes in an area’s temperatures and humidity levels?(1 point) Responses different types of cloud formations different types of cloud formations density of air density of air movement of large air masses movement of large air masses amount of precipitation amount of precipitation

The factor in the atmosphere that is most responsible for changes in an area’s temperatures and humidity levels is: movement of large air masses.

Here's the reasoning:

  • Large air masses can have distinct temperature and humidity characteristics based on their source regions (e.g., polar, tropical, maritime, continental).
  • When these air masses move into an area, they can bring significant changes in temperature and humidity. For example, a warm, moist air mass from over the ocean can raise humidity levels and temperatures, while a cold, dry air mass from the north can lower temperatures and humidity levels.

Thus, the movement of large air masses is the primary factor driving changes in temperature and humidity in an area.

Use the weather forecast from a meteorologist to answer the question. “Temperatures will plummet late Thursday night through Saturday. All areas across the eastern region of the state are anticipated to be below freezing by Friday morning and again on Saturday morning. Heavy amounts of snow are possible late Thursday into Friday. High winds can also be expected across the area.” Which news headline best accounts for this change in weather? (1 point) Responses “A Warm Air Mass Forms over the Region” “A Warm Air Mass Forms over the Region” “A Strong Cold Front Threatens the Region” “A Strong Cold Front Threatens the Region” “A Cold Air Mass Exits the Region” “A Cold Air Mass Exits the Region” “A Warm Front Blankets the Region”

The news headline that best accounts for the change in weather described in the forecast is: “A Strong Cold Front Threatens the Region.”

Here's the reasoning:

  • The forecast indicates that "temperatures will plummet late Thursday night through Saturday," which suggests the arrival of much colder air.
  • The mention of "all areas across the eastern region of the state are anticipated to be below freezing" and the expectation of "heavy amounts of snow" further supports the idea that colder air is coming in, typical of a strong cold front.
  • A cold front would bring dropping temperatures and potentially inclement weather (like heavy snow) as it moves through the region.

Therefore, the headline highlighting the threat of a strong cold front aligns best with the forecast given.

Which condition would most likely require the National Weather Service to issue a severe thunderstorm warning?(1 point) Responses a large amount of moisture in the air condensing to form clouds a large amount of moisture in the air condensing to form clouds a meeting of two air masses with major differences in temperature and moisture a meeting of two air masses with major differences in temperature and moisture a front moving out of an area a front moving out of an area an air mass developing over a large body of water

The condition that would most likely require the National Weather Service to issue a severe thunderstorm warning is: a meeting of two air masses with major differences in temperature and moisture.

Here's the reasoning:

  • Severe thunderstorms often develop when warm, moist air rises rapidly in an environment where cold, dry air is present. This is especially common at a front where two air masses with differing characteristics collide (e.g., a warm, humid air mass meeting a cold, dry air mass).
  • The significant differences in temperature and moisture can lead to the development of strong updrafts, turbulence, and instability, which are essential for severe thunderstorm formation.

Thus, the interaction of differing air masses is a key factor that can lead to severe thunderstorms, making it the correct choice for this scenario.