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WorksheetsThe Ice Age
Total questions: 15
Worksheet time: 8mins
Which of the following processes involves heat loss?
Condensation
Evaporation
Melting
Freezing
Which of the following factors can affect the rate of evaporation?
Exposed surface area
Humidity
Presence of sunlight
Volume of water
During winter, white puffs of "smoke" appear to be coming out from people's mouths when they breathe. Why is this so?
Water vapour in the air condenses when it comes into contact with the warm breath from the person's mouth.
Water vapour from the person's mouth condenses when it comes into contact with the cooler air.
Water vapour from the person's mouth can be seen as the the white puffs of "smoke".
Water droplets from the air can be seen when it comes into contact with the warm breath from the person's mouth.
Tony observed water droplets forming on the outside of someone else's glass. What conclusion can he draw?
The drink is colder than room temperature.
The drink is warmer than room temperature but below 100oC.
The drink is above 100oC.
The drink is at room temperature.
Sara left her ice-cream on the table. When she returned 10 minutes later, she found that her ice-cream had melted. Why did this happen?
The ice-cream gained heat from the surroundings and melted.
The ice-cream lost heat to the surroundings and melted.
The table gained heat from the ice-cream and made the ice-cream melt.
The table lost heat to the surroundings and melted.
Kori's mother wanted to defrost some hamburgers that she took out from the freezer. Which plate should she put the hamburgers on to make them defrost more quickly?
Wooden plate
Metal plate
Plastic plate
Paper plate
Rayyan observed white fumes coming out from his cup of coffee. Which of the following explains how the white fumes formed?
Water vapour from the surroundings came into contact with the heat from the coffee and condensed.
Water evaporated from the coffee and escaped as water vapour.
Water vapour from the coffee came into contact with the cooler air and condensed.
Water evaporated from the coffee and condensed when it gained heat from the surrounding air.
3 containers containing an equal volume of water were left on a table. In which container would evaporation occur at the fastest rate?
X
Y
Z
Sheila packs lunch in cardboard boxes to take to school. However, she finds that her food always gets soggy and wet after a while. What could she do to stop her food from getting soggy?
Poke holes in the box
Let the food cool to room temperature before packing it into the box.
Keep the box in the fridge.
Use a plastic box instead.
Which of the following processes is not part of the water cycle?
Condensation
Evaporation
Freezing
Precipitation / Rainfall
How do clouds form?
Water droplets evaporate into water vapour, forming clouds.
Water vapour condenses into water droplets, forming clouds.
Water vapour evaporates into water droplets, forming clouds.
Water droplets condense into water vapour, forming clouds.
What is the difference between boiling and evaporation?
Boiling takes place at a fixed temperature but evaporation can take place at any temperature.
Evaporation takes place at a fixed temperature but evaporation can take place at any temperature.
Boiling involves water turning into water vapour but evaporation involves water vapour turning into water.
Boiling involves water vapour turning into water but evaporation involves water turning into water vapour.
Laura's glasses fog up once she steps out of her room. What conclusion can you draw from this observation?
It is warmer inside her room than outside.
It is colder inside her room than outside.
Her room is at the same temperature as the outside.
Which of the following statement(s) is true?
The melting and freezing points of water are the same.
The temperature of melting ice is slightly higher than 0oC.
The temperature of melting ice is exactly 0oC.
Water can reach temperatures that are higher than 100oC.
Which graph correct shows the relationship between humidity and the rate of evaporation?
