Independent and dependent variables worksheet with answer key

Problem 1 :

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured in grams.

Problem 2 :

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured in grams.

Problem 3 :

How old is Michael's father if he is 5 more than 3 times as old as Michael ?

Problem 4 :

Sachin saves $x every day. How much does he save in one week ?

Problem 5 :

Cora is hosting a potluck dinner for her book club. The number of chairs she will need depends on the number of members who attend.

c  =  the number of chairs Cora will need
m  =  the number of members who attend the potluck

Which of the variables is independent and which is dependent ?

Independent and dependent variables worksheet with answer key

Detailed Answer Key

Problem 1 :

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured in grams.

Solution :

Here ,

Independent variable  =  temperature 

Dependent variable  =  quantity of sugar dissolving

Problem 2 :

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured in grams.

Solution :

Here ,

Independent variable  =  temperature 

Dependent variable  =  quantity of sugar dissolving

Problem 3 :

How old is Michael's father if he is 5 more than 3 times as old as Michael ?

Solution :

Here ,

Independent variable  =  Michael's age 

Dependent variable  =  Michael's father's age

Problem 4 :

Sachin saves $x every day. How much does he save in one week ?

Solution :

Here ,

Independent variable  =  Every day's saving 

Dependent variable  =  His one week saving

Problem 5 :

Cora is hosting a potluck dinner for her book club. The number of chairs she will need depends on the number of members who attend.

c  =  the number of chairs Cora will need
m  =  the number of members who attend the potluck

Which of the variables is independent and which is dependent ?

Solution :

Since the number of chairs Cora will need depends on the number of members who attend the potluck, the number of chairs is the dependent variable. So, c is the dependent variable.Since the number of members who attend the potluck does not depend on the number of chairs Cora will need, the number of members is the independent variable. So, m is the independent variable.

Independent and dependent variables worksheet with answer key

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Independent & Dependent Variables

Independent and dependent variables worksheet with answer key

I have found my students have a great deal of difficulty with the concept of independent and dependent variables. Newer textbooks will now call these variables “manipulated and responding” but that still doesn’t seem to make it easier for students to identify which is which. No matter how many examples I give them, how many labs, how many graphs, my students will get these questions wrong, particularly on multiple choice tests where there are choices meant to distract the student.

This worksheet was designed as a way to get students to quickly read and identify the variables in a scenario. Each scenario is only a couple sentence long, such as ” One grape is placed in tap water and another grape is placed in salt water. The change in their mass is measured after a day. ” In the chart, students would identify the independent variable as the type of water and the dependent variable as the mass of the grapes.

The worksheet is made very simple, to be practice just about those variables and not other aspects of the scientific method. For differentiation, I also have a Bee version (low level) of the worksheet that gives multiple choice options. This version may also be useful for test preparation with other groups.

Grade Level: 8-10
Time Required: 15-20 minutes

Download PDF Google Doc  Key (TpT)

What is the independent variable answer key?

Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable.

What is independent variable worksheet?

An independent variable is the one thing you intend to vary in an experiment. A dependent variable is the thing that will change that you intend to measure as a quantitative assessment of the effect.

How did you identify the independent variable and dependent variable?

An easy way to think of independent and dependent variables is, when you're conducting an experiment, the independent variable is what you change, and the dependent variable is what changes because of that. You can also think of the independent variable as the cause and the dependent variable as the effect.

What are some examples of independent dependent and controlled variables?

Example: a car going down different surfaces. Independent variable: the surface of the slope rug, bubble wrap and wood. Dependent variable: the time it takes for the car to go down the slope. Controlled variable: the height of the slope, the car, the unit of time e.g. minutes and the length of the slope.