1) In an experiment testing how the amount of sunlight affects plant growth, what is the independent variable? a) Amount of sunlight b) Plant growth 2) In an investigation where students change the temperature of water to see how fast sugar dissolves, what is the dependent variable? a) Water temperature b) Sugar dissolution rate 3) If we test how the length of a pendulum affects the time it takes to swing, which is the independent variable? a) Pendulum length b) Swing time 4) Scientists change the type of soil to measure how it affects the height of bean plants. What is the dependent variable? a) Soil type b) Bean plant height 5) A student tests how different amounts of fertiliser affect the number of tomatoes a plant grows. What is the independent variable? a) Amount of fertiliser b) Number of tomatoes 6) In an experiment measuring how distance from a speaker affects the loudness of sound, what is the dependent variable? a) Distance from speaker b) Sound loudness 7) Students change the brand of paper towel to see how much water each can absorb. What is the independent variable? a) Brand of paper towel b) Water absorbed 8) A class investigates how the angle of a ramp affects the speed of a toy car. What is the dependent variable? a) Ramp angle b) Toy car speed 9) Scientists test how the amount of salt in water affects the time it takes to freeze. What is the independent variable? a) Amount of salt b) Freezing time 10) Learners change the size of a parachute and measure how long it takes to fall to the ground. What is the dependent variable? a) Parachute size b) Fall time

Grade 4 - Independent and Dependent Variables

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