1. Science Skills: Variables Self Check Click to test yourself

2. A variable is something that can vary or change. What are the variables in this statement? The time it takes to run a 10 km race depends on the amount of training the runner does. Click to check your answers

3. The time it takes to run a 10 km race depends on the amount of training the runner does. The manipulated variable is the amount of training. The responding variable is the time it takes to run a 10 km race. It is not enough to say just time or training – you must describe the MV and tell how the RV is measured. Click for another question

4. What are the variables in this statement? The temperature of water will be different when measured at different depths in a lake. Click to check your answers

5. The temperature of water will be different when measured at different depths in a lake. The manipulated variable is the depth of the lake. The responding variable is the temperature of the water. Click for another question

6. What are the variables in this statement? The more water a plant gets, the taller it will grow. Click to check your answers

7. The more water a plant gets, the taller it will grow. The manipulated variable is the amount of water. The responding variable is the height of the grass. Click for another question

8. What are the variables in this statement? The number of puppies in a litter is determined by the weight of the mother dog. Click to check your answers

9. The number of puppies in a litter is determined by the weight of the mother dog. The manipulated variable is the weight of the mother dog. The responding variable is the number of puppies in the litter. Click for another question

10. What are the variables in this statement? The Texas A & M Extension Service has been counting the number of coyotes in Bexar County. Will the number of coyotes have any effect on the rabbit population? Click to check your answers

11. The Texas A & M Extension Service has been counting the number of coyotes in Bexar County. Will the number of coyotes have any effect on the rabbit population? The manipulated variable is the number of coyotes. The responding variable is the rabbit population.