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WorksheetsP4Sc Heat & Light Energy
Total questions: 15
Worksheet time: 8mins
Which one of the following explains why Lily can see the book on the table?
Which one of the following is not a source of light?
Sun
lit candle
firefly
moon
Which one of the following explains why Robin could not see the table?
The table did not reflect light.
The table did not give off light.
The wall did not allow light to pass through.
The table did not allow light to pass through.
Kenny arranged sheets X and Y, made of different materials, in a straight line. Sheet X has a round-shaped hole in the center. In a dark room, when he switched on the torch, a dark shadow with a bright spot in the centre was seen on the screen.
Kenny can conclude that __________________.
only sheet X allows light to pass through
only sheet Y allows light to pass through
both sheet X and Y allow light to pass through
both sheet X and Y do not allow light to pass through
The diagrams below show 'glow in the dark' balls inside some boxes. Kent looked through the opening in each box as shown by the arrow. Which box(es) will Kent be able to see the ball from the opening?
At room temperature, the ball was able to pass through the ring. After heating the ball for a while, the ball was unable to pass through the ring.
Which of the following explains this observation?
The ring expanded and the ball contracted.
The ring contracted and the ball expanded.
The ring contracted and the ball contracted.
The ring remained the same and the ball expanded
Four similar cups, A, B, C, and D were filled with equal amount of water at different temperatures. Which cup has the most heat?
Cup A
Cup B
Cup C
Cup D
Why does holding the hot noodles above the cup help to cool the noodles?
Heat is gained by the noodles from the cup.
Heat is gained by the noodles from the chopsticks.
Heat is lost from the surrounding air to the noodles.
Heat is lost from the noodles to the surrounding air.
The diagram shows a cup filled with hot tea at 80oC.
Which graph below shows the correct temperature change in the water over 3 hours after the cup was left on the dining table?
Faye conducted an experiment using four different materials, W, X, Y and Z. She wrapped four identical cups with each of the materials and poured an equal amount of cold water into all the cups.
She recorded the changes in the temperature of the water in the cups and presented her results in the graph above.
Which material is the best conductor of heat?
Material W
Material X
Material Y
Material Z
Which material is the best to be made as the handle of a cooking pot?
Material W
Material X
Material Y
Material Z?
Two opaque objects are placed in between a screen and a torch in a straight line on a table as shown in the set-up above.
Which one of the following shadows will be formed on the screen?
Based on the results above, which of the following conclusions can be made?
Material S blocks more light than material P.
Material R does not allow light to pass through.
Material P allows the least amount of light to pass through.
Material Q allows more light to pass through than material P.
The diagram above shows three Containers X, Y and Z, containing different volumes of water at different temperatures.
Which of the following statements about the three containers of water are true?
Water in Container X has more heat than Container Z.
Water in Container X has more heat than Container Y.
Water in Containers X and Y have the same amount of heat.
Water in Containers X and Z have the same amount of heat.
The water in beaker A was poured into Beaker B.
The temperature of the water in beaker B now will most likely be _____.
20ºC
50ºC
80ºC
100ºC
