Science Skills: Variables For the first 4 problems indicate the independent variable and dependent variable. Follow the directions for Problem 5 as given.

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Science Skills: Variables

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Science Skills: Variables For the first 4 problems indicate the independent variable and dependent variable. Follow the directions for Problem 5 as given. Write your answers on a sheet of loose-leaf paper. This is your exit pass for today! Powerpoint adapted from science-class.net

A variable is something that can vary or change. What are the variables in this statement? This sample problem will give you the answer in the next slide. The time it takes to run a 10 km race depends on the amount of training the runner does. Click to check your answers

The time it takes to run a 10 km race depends on the amount of training the runner does. The independent variable is the amount of exercise. The dependent 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 I.V. and tell how the D.V. is measured.

What are the variables in this statement? Problem 1: The temperature of water is measured at different depths in a lake Independent variable: Dependent variable:.

What are the variables in this statement? Problem 2: The more water a plant gets, the taller it will grow. Independent variable: Dependent variable:

What are the variables in this statement? Problem 3: The number of puppies in a litter is determined by the weight of the mother dog. Independent variable: Dependent variable:

What are the variables in this statement? Problem 4: 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? Independent variable: Dependent variable:

Problem 5: Lemon trees receiving the most water produce the largest lemons. a. Create a problem question. b. Identify the independent variable: c. Identify the dependent variable: d. List 2 possible constants: e. Explain what you might use for a control.