Investigating the water cycle "snow fun"
In this teacher directed inquiry indoor lab students collect snow in a cup. They will estimate how much water will be in the cup after the snow melts. Students will then make predictions about what will happen to the cup of water. After the water has evaporated look at cups and ask questions. Refill the cups with snow and have students try to find ways to keep the water from evaporating.
1) Water left in an open container disappears.
2) Water in a closed container does not disappear.
3) Snow left at room temperature will melt
4) Snow takes up more room than water.
Context for Use
Resource Type: Activities:Lab Activity, Classroom Activity
Grade Level: Primary (K-2)
Description and Teaching Materials
Day 2: The next day, look at the water in the cup. How was your estimation? Too high or too low? Why do you think that happened? What does the water look like? This might produce a nice discussion on the snow looking clean but is actually dirty. Does anyone know why? What could cause that to happen? Journal what the cup looked like and write about their prediction (too high etc). Next, split a new journal page into 4 parts for days 1-4. What do you think your cup will look like on each day?
Day 3: Observe cups; what happened to the water your cup? Why and were did it go? How can we keep the water in the glass? Brainstorm.
Try as many of the brainstorms as possible. Discuss with the class anything the brainstorms have in common (like covering the top). Set a cup upside down on top of the other cup and tape them together. The bottom cup should have water in it with the water level marked. Place the cup by a window or on a table they can see. Have them journal what it looks like to them and write or draw what they think it will look like tomorrow. Watch closely; what happens over the next few days?
Teaching Notes and Tips
Earth and Space
Grade K 111 Earth science B1 sub strand the water cycle. The student will observe weather changes. Benchmark water left in an open container disappears but water in a closed container does not disappear.