WorksheetsWater and Changes of States
Total questions: 14
Worksheet time: 10mins
Other than presence of wind, which are the factors that affects the rate of evaporation?
(You may select more than one option)
Surface area
Temperature
Exposed surface area
Humidity
Evaporation is a process that happens _________________________________.
at 100°C
at any temperature
between 10°C and 100°C
Freezing is a heat ____________ process.
loss
lose
lost
gain
Melting is a heat __________ process.
loss
lose
lost
gain
Melting is a process that changes _____________________________.
solid to liquid
liquid to solid
liquid to gas
gas to liquid
Condensation occurs when _____________ water vapour comes into contact with a cooler surface, loses heat and condenses into water droplets.
warm
warmer
cold
colder
Condensation occurs when warmer water vapour comes into contact with a _______________ surface, loses heat and condenses into water droplets.
warm
warmer
cool
cooler
Condensation occurs when warmer water vapour comes into contact with a cooler surface, _____________ heat and condenses into water droplets.
loses
loss
lost
gains
Condensation occurs when warmer water vapour comes into contact with a cooler surface, loses heat and __________________ into water droplets.
codenses
condenses
condeses
condences
Boiling is a heat __________ process and occurs ________________________.
gain; at the surface of the liquid
gain; throughout the liquid
loss; at the surface of the liquid
loss; throughout the liquid
When Dylan got off from an air-conditioned bus, the lens of his spectacles became blurred. What caused this to happen?
Warmer water vapour from the air-conditioned bus came into contact with a cooler outer surface of his spectacles' lens, lost heat and condensed into water droplets.
Warmer water vapour from the surrounding air came into contact with a cooler outer surface of his spectacles' lens, gained heat and condensed into water droplets.
Cooler water vapour from the air-conditioned bus came into contact with a warmer outer surface of his spectacles' lens, gained heat and condensed into water droplets.
Warmer water vapour from the surrounding air came into contact with a cooler outer surface of his spectacles' lens, lost heat and condensed into water droplets.
When humidity is _____________, the rate of evaporation will be ______________.
lower; faster
lower; slower
higher; faster
Evaporation changes __________________________________.
water to steam
water to water vapour
water vapour to water
A puddle of water will evaporate faster when it is _____________________.
(You may choose more that one option)
windy
sunny
rainy
cloudy
