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WorksheetsHeat and Temperature - Revision
Total questions: 15
Worksheet time: 22mins
Which of the following are sources of heat? Tick all correct answers.
Campfire
Lit bulb
Jacket
Sun
Which of the following is the most possible room temperature in a classroom in Singapore?
5°C
12°C
30°C
45°C
When all the water in cup A is poured into cup B, the temperature of the water in the end is most likely ______.
35°C
45°C
55°C
65°C
Two eggs of similar sizes were cracked into cups X and Y. Which egg will be cooked first?
Egg in cup X
Egg in cup Y
Two eggs of similar sizes were cracked into cups X and Y. In which cup will the egg be cooked faster?
Egg in cup X
Egg in cup Y
Henry placed this cup of hot water on his dining table. What would happen to the temperature of this cup of water after 3 hours? Explain your answer. (Choose the best answer)
The temperature of the water will lose heat to the surroundings.
The temperature of the water decreased as the water lost heat.
The temperature decreased to room temperature as the water lost heat to the surroundings.
The temperature of the water decreased as the water gained heat from the surrounding air.
Based on the diagram, which one of the thumbtacks will fall off last?
Thumbtack 1
Thumbtack 2
Thumbtack 3
Thumbtack 4
Some ice cubes were placed on the table. Which of the following best explains why the ice cubes melted?
The surroundings lost heat to the ice cubes.
The ice cubes gained heat from the surroundings.
The ice cubes lost heat to the surroundings.
The ice cubes lost coolness to the surroundings.
Read the thermometer. The temperature shown is _______ °C
21°C
25°C
25.5°C
26°C
Box S's material has a special property for its function to allow the ice cubes to keep the drinks cold. What is this property?
(a)
Which one of the beakers of water shown have the lowest temperature after they were heated for one minute?
W
X
Y
Z
Which one of the beakers of water shown above would have the highest temperature after they were heated for one minute?
W
X
Y
Z
The drop of coloured ink moves downwards when the flask was placed in iced water. Explain the observation.
The coloured ink lost heat to the iced water and contracted.
The air in the flask lost coldness to the iced water and contracted.
The air in the flask lost heat to the iced water and contracted.
The iced water lost heat to the air in the flask and contracted.
Fill in the blank. "To make a water bottle to keep milo cold for a longer period of time, we should use a material that is a (a) conductor of heat."
Fill in the blank. "To make a lunchbox to keep fried nuggets hot for a longer period of time, we should use a material that is a (a) conductor of heat."
