Question

hot air balloon pilots must closely analyze the weather to decide whether conditions are right for a flight. if you spot the bright colors of a hot air balloon soaring overhead, its likely early or late in the day.
what difference does time of day make in piloting a hot air balloon safely? wind speeds are typically lower and more consistent earlier and later in the day when the sun is lower in the sky. when the sun is high, convection heating occurs, creating large bubbles of hot air known as thermals, which rise from the warmer earth. columns of thermals create unpredictable air currents and can make ballooning too dangerous.
hot air balloon pilots have to plan their navigation and landings, and while air movement in the atmosphere is inevitable, winds above 6 miles per hour make a launch too risky. even moderate winds can throw a hot air balloon off course and force pilots to land in inconvenient locations.
in addition to ensuring safe, predictable flights, launching hot air balloons early or late in the day provides pilots and passengers an added bonus: the chance to admire the brilliant colors of sunrise and sunset from high in the sky.
which two choices state central ideas of the text?
choose 2 answers:

Explanation:

The text emphasizes that hot - air balloon pilots need to consider wind conditions related to time of day for safe flights, and also mentions the added bonus of seeing sunrises/sunsets. It highlights the importance of time - of - day for safety and an extra perk.

Answer:

1. The time of day affects wind conditions, and lower and more consistent winds early or late in the day are safer for hot - air balloon flights.
2. Launching hot - air balloons early or late in the day allows pilots and passengers to enjoy the colors of sunrise and sunset.