1) Which of the following is true about temperature? a) The amount of heat in a substance b) The degree of hotness of a substance c) The rise and fall in the temperature of a substance d) The expansion and contraction of a substance 2) What happens when an object is heated? a) The temperature decreases b) It contracts c) It gains heat d) It loses heat 3) Table 1 shows the change in temperature of water when heated. Predict the temperature of water at the 10th minute. a) 50oC b) 57oC c) 64oC d) 71oC 4) Diagram 1 shows the temperature reading of a beaker of water. What is the temperature of the water? a) 40oC b) 43oC c) 45oC d) 55oC 5) Which of the following will not happen when ice cubes are put into the hot coffee? a) The hot coffee losses heat b) The hot coffee becomes cold c) The temperature of the hot coffee falls d) The temperature of the hot coffee rises 6) The diagram shows an investigation. Why does the balloon inflate? a) The air in the flask expands b) The air in the flask contract c) The air outside the flask expands d) The air outside the flask contracts 7) The diagram shows two beakers of water with different temperatures. If all the water in beaker Y is poured into beaker X, predict the temperature of the water. a) 30 oC b) 54 oC c) 70 oC d) 100 oC 8) The diagram shows the change in the temperature of a glass of water in 20 minutes. Which of the following statements is true? a) The water in the glass expands b) The water in the glass contracts c) The water loses heat to the surroundings d) The water gains heat from the surroundings 9) Which of the following applies the principles of expansion and contraction of matter? a) Periscope b) Wooden bridge c) Side mirror of a car d) Railway tracks 10) The diagram shows a flask filled with coloured water. What will happen if the flask is placed in a basin filled with ice? a) The coloured water will evaporate b) The coloured water will change colour c) The level of coloured water in the glass tubing will rise d) The level of coloured water in the glass tubing will fall 11) The diagram shows two glasses that are stuck together. What can be done to separate the two glasses? a) Fill ice cubes into glass K b) Place both glasses in the water c) Place glass L in cooking oil d) Fill hot water into glass K 12) Why are electric cables installed loosely between poles? a) To increase the strength of the electric cables b) To reduce heat loss from the electric cables c) To allow the electric cables to expand during hot weather d) To avoid the electric cables from snapping when they contract during cold weather

Heat - Science Year 5

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