Independent & Dependent Variables Practice - Free Printable
Educational worksheet: Independent & Dependent Variables Practice. Download and print for classroom or home learning activities.
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Step-by-step solution for: Independent & Dependent Variables Practice
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Show Answer Key & Explanations
Step-by-step solution for: Independent & Dependent Variables Practice
I will solve this problem by identifying the independent and dependent variables for each of the six scenarios presented in the image. I'll go through each one step-by-step.
First, let's look at the image to understand the structure. The table has three columns: "Scenario," "Independent (Manipulated)," and "Dependent (Responding)." For each scenario, I need to identify which variable is being intentionally changed (independent) and which variable is being measured or observed as a result (dependent).
I will now examine each scenario individually.
Scenario 1:
- A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years.
- The variable being manipulated (changed) is whether or not the cow received the growth hormone.
- The variable being measured is the weight of the cows at 2 years.
Scenario 2:
- Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours.
- The variable being manipulated is the application of mosquito repellent (sprayed vs. not sprayed).
- The variable being measured is the number of mosquito bites.
Scenario 3:
- 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.
- The variable being manipulated is the type of water (tap water vs. salt water).
- The variable being measured is the change in mass of the grapes.
Scenario 4:
- Two different cars are traveling at 60 mph. At a certain point, both cars slam on the brakes. The distance it takes for each car to stop is measured.
- The variable being manipulated is the type of car (assuming they are different models or makes).
- The variable being measured is the stopping distance.
Scenario 5:
- Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time is spent on each side.
- The variable being manipulated is the environment (wet vs. dry).
- The variable being measured is the amount of time the pillbugs spend in each environment.
Scenario 6:
- A stapler is used to staple 100 papers. It jams 5 times during the trial. A different brand of stapler performs the same test. It jams 22 times.
- The variable being manipulated is the brand of the stapler.
- The variable being measured is the number of times the stapler jams.
Now, I will provide the final answer with the independent and dependent variables for each scenario.
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Based on the analysis, here are the independent and dependent variables for each scenario:
1. Independent: Whether the cow received the growth hormone or not.
Dependent: The weight of the cows at 2 years.
2. Independent: Application of mosquito repellent (sprayed vs. not sprayed).
Dependent: The number of mosquito bites.
3. Independent: The type of water (tap water vs. salt water).
Dependent: The change in mass of the grapes.
4. Independent: The type of car.
Dependent: The stopping distance.
5. Independent: The environment (wet vs. dry).
Dependent: The amount of time the pillbugs spend in each environment.
6. Independent: The brand of the stapler.
Dependent: The number of times the stapler jams.
First, let's look at the image to understand the structure. The table has three columns: "Scenario," "Independent (Manipulated)," and "Dependent (Responding)." For each scenario, I need to identify which variable is being intentionally changed (independent) and which variable is being measured or observed as a result (dependent).
I will now examine each scenario individually.
Scenario 1:
- A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years.
- The variable being manipulated (changed) is whether or not the cow received the growth hormone.
- The variable being measured is the weight of the cows at 2 years.
Scenario 2:
- Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours.
- The variable being manipulated is the application of mosquito repellent (sprayed vs. not sprayed).
- The variable being measured is the number of mosquito bites.
Scenario 3:
- 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.
- The variable being manipulated is the type of water (tap water vs. salt water).
- The variable being measured is the change in mass of the grapes.
Scenario 4:
- Two different cars are traveling at 60 mph. At a certain point, both cars slam on the brakes. The distance it takes for each car to stop is measured.
- The variable being manipulated is the type of car (assuming they are different models or makes).
- The variable being measured is the stopping distance.
Scenario 5:
- Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time is spent on each side.
- The variable being manipulated is the environment (wet vs. dry).
- The variable being measured is the amount of time the pillbugs spend in each environment.
Scenario 6:
- A stapler is used to staple 100 papers. It jams 5 times during the trial. A different brand of stapler performs the same test. It jams 22 times.
- The variable being manipulated is the brand of the stapler.
- The variable being measured is the number of times the stapler jams.
Now, I will provide the final answer with the independent and dependent variables for each scenario.
---
Based on the analysis, here are the independent and dependent variables for each scenario:
1. Independent: Whether the cow received the growth hormone or not.
Dependent: The weight of the cows at 2 years.
2. Independent: Application of mosquito repellent (sprayed vs. not sprayed).
Dependent: The number of mosquito bites.
3. Independent: The type of water (tap water vs. salt water).
Dependent: The change in mass of the grapes.
4. Independent: The type of car.
Dependent: The stopping distance.
5. Independent: The environment (wet vs. dry).
Dependent: The amount of time the pillbugs spend in each environment.
6. Independent: The brand of the stapler.
Dependent: The number of times the stapler jams.
Parent Tip: Review the logic above to help your child master the concept of variables worksheet science.
