1) What is a prediction? a) Something that changes in an experiment. b) A statement that says what you think will happen. c) Carefully looking at an object or process. 2) What is categoric data? a) Data where the value is a word. b) Data where the value is a whole number. c) Data where the value can be a whole number or a decimal. 3) What is a risk assessment? a) It explains how to reduce the damage to equipment or injury to people. b) It explains how to reduce the damage to equipment in an investigation. c) It explains how to reduce damage to equipment. 4) What is accurate data? a) When more than one person repeats a measurement. b) When the same person repeats a measurement. c) Data that is close to the true value of what you are measuring. 5) What is precise data? a) When a person repeats a measurement and the results are similar. b) When a person repeats a measurement and the results are different. c) When more than one person repeats a measurement and the results have a large spread of values. 6) What is an observation? a) Looking closely at something only. b) Smelling something only. c) Hearing something only. d) Looking, smelling and hearing something that happens during an investigation. 7) What is continuous data? a) Data with only whole numbers (integers). b) Data that is words. c) Data that can be a mixture of whole numbers and fractions. 8) A person measures the height of a tennis ball that drops on grass and then clay courts. What is the dependent variable? a) The height of the tennis ball. b) The type of court. c) The temperature of the ball. 9) Susan measures the time it takes for a Ford Fiesta and a Lamborghini to pass the finish line in a race. What is the dependent variable? a) The type of car. b) The time taken to finish the race. c) The colour of the car. 10) Bob measures how many marbles he pulls out of a bag are green. What is the dependent variable? a) How many of the marbles are green. b) How many of the marbles are red. c) What size the marbles are. 11) Maryam measures how long it takes for milk and orange juice to boil. What is the independent variable? a) How long it takes for the milk and orange juice to boil. b) The type of pan she uses. c) The kind of liquid she heats. 12) What is a variable? a) The way you record data. b) The scientific question you are asking. c) Something that might affect the outcome of an investigation. 13) Mohammed records the temperature of two beakers of water after adding salt to one and sugar to the other. What could a control variable be? a) The amount of sugar and salt added. b) The temperature of the water after adding the sugar and salt. c) The numbers recorded on the thermometer. 14) What is the outlier in this set of numbers? 1, 2, 3, 4, 26, 6, 8, 10. a) 2 b) 10 c) 26 15) What is the mean of these numbers? 5, 5, 11 a) 2 b) 7 c) 21 16) What does a conclusion show? a) It tells you how to improve your method. b) It explains your results. c) It includes a prediction.

Working scientifically

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