What makes water evaporate faster?

Question 1

True or false? Puddles dry faster on cold, still days.

• A. True
• B. False

Question 2

Why does washing dry slowly on a cold, damp, still day?

• A. Cold makes water heavier.
• B. Damp air is too light.
• C. Clothes like being wet.
• D. Cold, still, damp air slows evaporation.

Question 3

How many hours longer did the towel take to dry in the shade than in the sun (both with no wind)?

Answer 

Question 4

True or false? Wind helps wet things dry faster.

• A. True
• B. False

Question 5

In a fair test of whether wind speeds up drying, what must stay the same?

• A. nothing
• B. the amount of water, the cloth and the temperature
• C. the wind
• D. only the colour of the pegs

Question 6

Four identical wet towels were hung in different places. Where did the water evaporate most slowly?

• A. sunny and windy
• B. sunny, no wind
• C. shady, no wind
• D. cold cupboard

Question 7

True or false? Puddles dry faster on cold, still days.

• A. True
• B. False

Question 8

Puddles in a wide, shallow tray dry faster than the same water in a tall, narrow glass. Why?

• A. The glass makes water.
• B. Water in glasses never evaporates.
• C. More water surface is touching the air.
• D. The tray is heavier.

Question 9

Four identical wet towels were hung in different places. Where did the water evaporate fastest?

• A. sunny and windy
• B. sunny, no wind
• C. shady, no wind
• D. cold cupboard

Question 10

True or false? Water only evaporates when it boils.

• A. True
• B. False

Question 11

Salt farmers let seawater sit in wide, shallow ponds in the sun. Why?

• A. The water evaporates quickly, leaving the salt behind.
• B. The sun makes more salt.
• C. Shallow water freezes into salt.
• D. To keep fish in.

Question 12

Four identical wet towels were hung in different places. Where did the water evaporate fastest?

• A. sunny and windy
• B. sunny, no wind
• C. shady, no wind
• D. cold cupboard

Question 13

True or false? Water only evaporates when it boils.

• A. True
• B. False

Question 14

Why does washing dry slowly on a cold, damp, still day?

• A. Damp air is too light.
• B. Cold makes water heavier.
• C. Cold, still, damp air slows evaporation.
• D. Clothes like being wet.

Question 15

Four identical wet towels were hung in different places. Where did the water evaporate most slowly?

• A. sunny and windy
• B. sunny, no wind
• C. shady, no wind
• D. cold cupboard

Question 16

True or false? Evaporated water is destroyed.

• A. True
• B. False