A backpacker measures her elevation in reference to sea level. The backpacker measures an elevation of 140 feet. What does this measurement mean?

Being 140 feet above sea level means that the backpacker is standing on a surface that is higher than the average level of the world's oceans. This elevation is important for various reasons, from understanding the physical landscape to predicting weather patterns, as higher elevations typically have different temperature and pressure conditions compared to lower ones. This measurement can also be useful in practical scenarios, like when planning a hiking trip. Knowing the elevation helps the backpacker prepare for the trail's difficulty and can assist in ensuring they have the right equipment and hydration levels. Plus, keeping track of altitude can be crucial for avoiding altitude sickness on higher peaks!