Final Answer:
Some of the water in cans A and B is now
water vapor as water
evaporated. There is more water left in the can under the tree because
the tree provided shade, so less evaporation occurred there.
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Explanation:
- On Monday morning, both cans had the same amount of water.
- Monday and Tuesday were sunny all day — but on Tuesday at 3:00 pm, can A (in the sun) had less water than can B (under the tree).
- Why? Because when water is exposed to heat and sunlight, some of it turns into invisible water vapor — this is called
evaporation.
- Can A was in direct sunlight, so more water evaporated from it.
- Can B was under the tree, which blocked some sunlight and kept it cooler, so less water evaporated.
- So the missing water didn’t disappear — it turned into water vapor and went into the air.
- That’s why we say: *Some water is now water vapor because it evaporated*, and *more water stayed in the shaded can because less evaporation happened there*.
Parent Tip: Review the logic above to help your child master the concept of types of matter worksheet.
