Can You Create A Water Puddle That Takes The Longest To Evaporate?
Have you ever wondered why some puddles seem to never go away and some evaporate quicker? We are going to test some theories and see why some puddles evaporate quicker.
What you need per person/group...
- Can You Create A Water Puddle That Takes The Longest To Evaporate? Creator Sheet
- Clear Plastic Cup with Water
What you need to do...
- Students will begin by picking groups and/or working independently. Pass out a Creator Sheet to each student or group.
- Have all items passed out at tables (dropper, clear plastic cup, teaspoon, water).
- First test, have students drop one drop of water onto the back of their hands, ask them do you think the water will evaporate quicker in the drop or spread out?
- Students will then time how long it takes for the water to evaporate, based on if they left it in the drop or spread it out.
- Next students will put a drop of water on the back of their hand and a drop on their chair (if plastic or metal).
- Have students decide which one will evaporate first, and set a timer for a minute and observe changes.
- Next, have students spread out the water and see if the water evaporates quicker by being spread out and record discoveries.
- If time allows, take students outside with their materials and put a drop of water on their hand and a drop of water on the concrete, which one do they think will evaporate quicker and why? Record discoveries.
- Now that we can see which one evaporates the fastest, how can we make a puddle take longer to evaporate?
- Begin to make your puddle and time how long it takes to make your water evaporate.
We would love to see you try this STEM Challenge. Share your results with us through social media!