4th Grade Science- Week of January 27, 2020
This week we continued our unit about the importance of Earth’s fresh water. Our lesson was called, “Can we make it rain?” We learned about the processes of evaporation and condensation, and the role they play in replenishing our fresh water.
You can encourage your child’s curiosity at home! Invite your child to observe what happens when the hot water is turned on for a shower or bath. After 5 minutes or so, what happens? You should both be able to notice not only how windows and mirrors fog up, but also the way that it feels to breathe the air. Some of the hot water is evaporating and filling the room with water vapor—this is what you’re feeling as you breathe in. As the water vapor comes in contact with the cool surface of a mirror or window, it condenses back to liquid water again, which is why these appear foggy. You can observe that the "fogginess" is actually tiny droplets of water.