During an experiment on a sunny day,students pour water on the sidewalk.Every 30 minutes ,they check the water to record any changes.After 1 hour, they observe that all the water is gone.What happens to the water?
The water evaporated due to the heat.
Based on the information given, after pouring water on the sidewalk on a sunny day, the water eventually evaporates. Evaporation is the process of a liquid turning into a gas when heated, and sunlight provides the necessary heat to facilitate this process. So, over time, the water molecules absorb heat energy from the sun and change from a liquid state to a gaseous state, resulting in the water disappearing or "going away".
Based on the information provided, the water poured on the sidewalk has disappeared after 1 hour. To understand what happened to the water, we can consider a few possibilities:
1. Evaporation: One reason for the water's disappearance could be evaporation. In a sunny environment, water droplets on the sidewalk can gradually turn into water vapor and escape into the atmosphere. The heat from the sun causes the water molecules to gain energy, enabling them to break free from the liquid state and become gas.
2. Absorption: Another possibility is that the water was absorbed by the porous material of the sidewalk. Sidewalks are typically made of concrete, which has tiny openings or pores. These pores can absorb the water, similar to a sponge soaking up liquid. Over time, the absorbed water may evaporate from within the sidewalk or be retained within its structure.
3. Runoff: It is also possible that the water flowed off the sidewalk and drained away. If the sidewalk has a slope or if there are nearby drainage systems, the water might have flowed downhill or into a drain, leading to its disappearance.
To determine which of these possibilities occurred in this specific situation, additional information or observations would be required. These could include checking for signs of evaporation (e.g., dampness), investigating the sidewalk's drainage system, or considering the weather conditions and temperature during the experiment.