Question

prior knowledge questions (do these before using the gizmo.) 1. if you exercise on a hot day, you need to worry about dehydration. in this context, what do you think dehydration means? 2. astronauts and backpackers often bring dehydrated food. what do you think dehydrated food is?

Explanation:

1. Dehydration occurs when the body loses more water than it takes in, often due to sweating during exercise in hot conditions. This can lead to imbalances in body - fluid levels and various health issues.
2. Dehydrated food is food from which most of the water content has been removed. This process helps in preserving the food for long - term storage and makes it lighter and more convenient to carry, which is useful for astronauts and backpackers.

Answer:

1. Loss of body water due to sweating during hot - day exercise, leading to fluid imbalance.
2. Food with most of its water content removed for preservation and convenience.