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Class 9 · Science
→A student changes the amount of sugar in water and measures the density of the solution. What type of variable is solution density?
Class 9 · Science
→In comparing the cleaning ability of different soaps, which factor should be controlled?
Class 9 · Science
→The amount of sand in soil is changed and the drainage time is measured. Which is the dependent variable?
Class 9 · Science
→While testing the falling time of parachutes of different sizes, which is the independent variable?
Class 9 · Science
→If the distance between a lamp and a plant is changed and the light-meter reading is recorded, what type of variable is the reading?
Class 9 · Science
→While measuring the extension of a rubber band at different temperatures, which variable should be kept constant?
Class 9 · Science
→Different amounts of water are poured onto soil and the amount of runoff is measured. What is the dependent variable?
Class 9 · Science
→While testing the effect of water depth on light availability, what is the independent variable?
Class 9 · Science
→In an experiment, the volume of music is changed and reading speed is measured. What type of variable is reading speed?
Class 9 · Science
→While testing the sinking time of the same object in different liquids, which factor should be controlled?
Class 9 · Science
→The burning time of candles of different lengths is measured. Which is the dependent variable?
Class 9 · Science
→If acid concentration is changed and the reaction rate with a metal is measured, what is the independent variable?
Class 9 · Science
→A student investigates the relationship between sleep duration and the number of words remembered the next morning. What is the number of words remembered?
Class 9 · Science
→While testing the effect of water temperature on the dissolving time of a tablet, what should be controlled?
Class 9 · Science
→The electric current produced by a solar cell is measured at different distances from a light source. Which is the dependent variable?
Class 9 · Science
→The cooling time of water in cups covered with different insulating materials is measured. What is the independent variable?
Class 9 · Science
→If the amount of food is changed and fish growth is measured, what type of variable is the amount of food?
Class 9 · Science
→While studying water temperature over time in sunlight, which factor can be kept controlled?
Class 9 · Science
→Different amounts of detergent are used and the percentage of stain removed is measured. What is the dependent variable?
Class 9 · Science
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