1) Variables that we keep the same.. a) control b) independent c) dependent 2) This variable, is the thing we want to measure.  a) Control b) Dependant c) Independent 3) Variable that we change... a) Dependent b) Controlled c) Independent 4) How could I make an experiment more reliable? a) Take measurements at different times of the day b) Keep repeating it until I get the same result c) Repeat the experiment but change the control d) Repeat the experiment and keep the control the same 5) I want to see if different levels of sunlight a plant is exposed to will change the rate of growth. What is my independent variable? a) Type of plant b) Rate of growth c) Level of sunlight 6) What should my control variables be? a) Type of plant b) Oxygen concentration of the air c) Volume of water each plant is given d) Carbon Dioxide concentration of the air 7) Johnny thinks that red toy cars are always faster than blue or green. He decides to test this by placing all cars on a ramp and letting them go, to see which car travels faster down the ramp. What is the independant variable? a) Make of car b) Age of car c) Colour of car d) Time taken to travel down ramp 8) Johnny thinks that red toy cars are always faster than blue or green. He decides to test this by placing all cars on a ramp and letting them go, to see which car travels faster down the ramp. What is the dependant variable? a) Make of car b) Age of car c) Colour of car d) Time taken to travel down ramp

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