What makes water evaporate faster?

Question 1

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

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

Question 2

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 3

True or false? Water only evaporates when it boils.

• A. True
• B. False

Question 4

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

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

Question 5

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 6

True or false? Water evaporates faster when it is warmer.

• A. True
• B. False

Question 7

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

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

Question 8

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 9

True or false? Water only evaporates when it boils.

• A. True
• B. False

Question 10

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

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

Question 11

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 12

True or false? Water only evaporates when it boils.

• A. True
• B. False

Question 13

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

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

Question 14

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 15

True or false? Water evaporates faster when it is warmer.

• A. True
• B. False

Question 16

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

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