Day

Observations
1
sunny and warm
2
cloudy and rainy
3
drop in temperature
4
clear skies and cold temperatures
Use the table to answer the question.
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)
• A warm front moved into the area.
• High levels of moisture are contained within an air mass.
• A warm air mass replaced a cold air mass.
• A cold front moved into the area.

Based on the observations, the factor in the atmosphere that best explains the student's observations is "A cold front moved into the area." This is because the weather transitioned from sunny and warm (indicating a warm air mass) to cloudy and rainy (indicating the arrival of a cold front). The drop in temperature and the clear skies and cold temperatures further support the idea of a cold front moving in.