Identifying Independent and Dependent Variables Worksheet | PDF - Free Printable
Educational worksheet: Identifying Independent and Dependent Variables Worksheet | PDF. Download and print for classroom or home learning activities.
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Step-by-step solution for: Identifying Independent and Dependent Variables Worksheet | PDF
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Show Answer Key & Explanations
Step-by-step solution for: Identifying Independent and Dependent Variables Worksheet | PDF
Since I can't view or access uploaded images directly, I can’t see the specific content of your image. However, based on your description and the text you've provided, it looks like you're working on a "Variables Worksheet" that asks students to identify the independent variable (IV), dependent variable (DV), and control in various scientific experiments.
Let me solve each of the four problems listed in your worksheet and explain the reasoning behind each answer.
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- Independent Variable (IV): Type of liquid used to water the beans
*(This is what Becky deliberately changed: chocolate milk, lemonade, water)*
- Dependent Variable (DV): Height of the beans after one week
*(This is what was measured — the outcome that depends on the liquid used)*
- Control: The plant watered with just water
*(This is the standard condition — normal watering — used as a baseline for comparison)*
> ✔ Why? The control group represents the "normal" or standard condition so we can compare the effects of the other liquids.
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- Independent Variable (IV): Type of fertilizer used (Miracle Grow, Scotts, none)
*(This is what Jason changed between the plants)*
- Dependent Variable (DV): Growth of the marigolds (e.g., height, number of flowers, etc.)
*(This is what he would measure to determine which fertilizer worked best)*
- Control: The plant with no fertilizer
*(This serves as the baseline to compare against the fertilized plants)*
> ✔ Why? The control shows how marigolds grow without any fertilizer, helping isolate the effect of the fertilizers.
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- Independent Variable (IV): Number of apples eaten per day
*(This is what Shania changed: 0, 1, 2, 3 apples)*
- Dependent Variable (DV): Grades on science work
*(This is the outcome being measured — does eating more apples improve grades?)*
- Control: Day 1 (when she ate no apples)
*(This is the baseline condition — no apples — to compare against the days when she did eat apples)*
> ✔ Why? The control helps determine whether eating apples has an effect compared to not eating them at all.
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- Independent Variable (IV): Type of music played (no music, rap, classical)
*(This is what Raelon changed between the days)*
- Dependent Variable (DV): Number of baskets made in 10 minutes
*(This is the outcome being measured — how many baskets were made under each condition)*
- Control: Day 1 (no music)
*(This is the baseline condition — no music — to compare against the music conditions)*
> ✔ Why? The control allows us to see if music (of any kind) affects performance compared to playing without music.
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| Problem | IV | DV | Control |
|--------|----|----|--------|
| 1 | Type of liquid (chocolate milk, lemonade, water) | Height of beans | Water |
| 2 | Type of fertilizer (Miracle Grow, Scotts, none) | Growth of marigolds | No fertilizer |
| 3 | Number of apples eaten | Science grades | 0 apples (Day 1) |
| 4 | Type of music (none, rap, classical) | Number of baskets made | No music |
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Let me know if you'd like this formatted as a printable answer sheet or need help turning this into a study guide!
Let me solve each of the four problems listed in your worksheet and explain the reasoning behind each answer.
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1. Becky wanted to figure out what type of liquid worked best for growing beans. She watered one with chocolate milk, one with lemonade, and one with just water. After one week, she measured how high they had grown.
- Independent Variable (IV): Type of liquid used to water the beans
*(This is what Becky deliberately changed: chocolate milk, lemonade, water)*
- Dependent Variable (DV): Height of the beans after one week
*(This is what was measured — the outcome that depends on the liquid used)*
- Control: The plant watered with just water
*(This is the standard condition — normal watering — used as a baseline for comparison)*
> ✔ Why? The control group represents the "normal" or standard condition so we can compare the effects of the other liquids.
---
2. Jason wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on one, and no fertilizer on another.
- Independent Variable (IV): Type of fertilizer used (Miracle Grow, Scotts, none)
*(This is what Jason changed between the plants)*
- Dependent Variable (DV): Growth of the marigolds (e.g., height, number of flowers, etc.)
*(This is what he would measure to determine which fertilizer worked best)*
- Control: The plant with no fertilizer
*(This serves as the baseline to compare against the fertilized plants)*
> ✔ Why? The control shows how marigolds grow without any fertilizer, helping isolate the effect of the fertilizers.
---
3. Shania wanted to see if eating apples would help her do better on her classwork. The first day, she didn’t eat any apples. On day 2, she ate one apple; on day 3, she ate 2 apples; and on day 4, she ate 3 apples. Each day, she recorded the grades she got on her science work.
- Independent Variable (IV): Number of apples eaten per day
*(This is what Shania changed: 0, 1, 2, 3 apples)*
- Dependent Variable (DV): Grades on science work
*(This is the outcome being measured — does eating more apples improve grades?)*
- Control: Day 1 (when she ate no apples)
*(This is the baseline condition — no apples — to compare against the days when she did eat apples)*
> ✔ Why? The control helps determine whether eating apples has an effect compared to not eating them at all.
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4. Raelon wanted to see if listening to music would make basketball players make more baskets. On day one, he didn’t play music and counted how many baskets they could make in 10 minutes. On day 2, he played rap music and counted the baskets, and on day 3, he played classical music and counted the baskets.
- Independent Variable (IV): Type of music played (no music, rap, classical)
*(This is what Raelon changed between the days)*
- Dependent Variable (DV): Number of baskets made in 10 minutes
*(This is the outcome being measured — how many baskets were made under each condition)*
- Control: Day 1 (no music)
*(This is the baseline condition — no music — to compare against the music conditions)*
> ✔ Why? The control allows us to see if music (of any kind) affects performance compared to playing without music.
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✔ Summary Table:
| Problem | IV | DV | Control |
|--------|----|----|--------|
| 1 | Type of liquid (chocolate milk, lemonade, water) | Height of beans | Water |
| 2 | Type of fertilizer (Miracle Grow, Scotts, none) | Growth of marigolds | No fertilizer |
| 3 | Number of apples eaten | Science grades | 0 apples (Day 1) |
| 4 | Type of music (none, rap, classical) | Number of baskets made | No music |
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Let me know if you'd like this formatted as a printable answer sheet or need help turning this into a study guide!
Parent Tip: Review the logic above to help your child master the concept of independent and dependent variable practice worksheet.
