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Class 9 · Science
→In an experiment, wire length is changed and its electrical resistance is measured. What type of variable is resistance?
Class 9 · Science
→While testing plant growth under different colours of light, which should be a controlled variable?
Class 9 · Science
→The amount of gas produced by yeast at different temperatures is measured. Which is the dependent variable?
Class 9 · Science
→If fan speed is changed and the drying time of a wet cloth is measured, what is the independent variable?
Class 9 · Science
→A student investigates the effect of study time on test score. What type of variable is the test score?
Class 9 · Science
→While testing the effect of salt concentration on whether an egg floats, which variable should be controlled?
Class 9 · Science
→The time taken by a stone to reach the ground from different heights is measured. What is the dependent variable?
Class 9 · Science
→While testing the effect of ice-cube size on melting time, what is the independent variable?
Class 9 · Science
→If the angle of a slope is changed and the speed of a ball is measured, what type of variable is the slope angle?
Class 9 · Science
→While testing the water absorption capacity of different brands of paper towels, what should be kept constant?
Class 9 · Science
→In an investigation, sound intensity is changed and a person's reaction time is measured. Which is the dependent variable?
Class 9 · Science
→The amount of water given to seeds is changed and seedling length is measured. Which is the independent variable?
Class 9 · Science
→A student changes the distance between a magnet and iron nails and counts the nails attracted. What is the dependent variable?
Class 9 · Science
→While testing the effect of temperature on the rate of evaporation, which is a suitable controlled variable?
Class 9 · Science
→The time of oscillation of pendulums with different lengths is measured. Which is the dependent variable?
Class 9 · Science
→In an experiment, the number of batteries is changed and bulb brightness is observed. What is the independent variable?
Class 9 · Science
→If exercise duration is changed and pulse rate is measured, what type of variable is pulse rate?
Class 9 · Science
→The wing length of a paper aeroplane is changed and its flight distance is measured. Which should be a controlled variable?
Class 9 · Science
→The time taken for milk to turn sour at different temperatures is measured. What is the dependent variable?
Class 9 · Science
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