hypothesis worksheet - Amundsen High School - Free Printable

Let's solve each of the problems on the Hypothesis Worksheet step by step. For each research question, we'll:

1. Write a hypothesis — a testable prediction about the relationship between variables.
2. Identify the independent variable — what is being changed or manipulated.
3. Identify the dependent variable — what is being measured or observed.

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1. What effect does high temperature have on radish germination?

- Hypothesis: If the temperature is increased, then the rate of radish germination will increase because higher temperatures speed up metabolic processes in seeds.

- Independent variable: Temperature (specifically high temperature)
- Dependent variable: Radish germination (number of seeds that germinate or time to germination)

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2. What effect does studying with music have on student test scores?

- Hypothesis: If students study with music playing, then their test scores will be lower than when they study in silence, because music can be distracting and reduce concentration.

- Independent variable: Presence of music during studying
- Dependent variable: Student test scores

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3. What effect does food color have on the amount of food fish eat?

- Hypothesis: If the food is colored red, then fish will eat more of it because red is a color that attracts fish in natural environments.

- Independent variable: Color of the food
- Dependent variable: Amount of food eaten by fish

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4. What effect does light have on plant growth?

- Hypothesis: If plants are exposed to more light, then they will grow taller and healthier because light is essential for photosynthesis.

- Independent variable: Amount or intensity of light
- Dependent variable: Plant growth (height, leaf count, etc.)

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5. What effect does smiling have on teacher giving no homework?

- Hypothesis: If a student smiles at the teacher, then the teacher is more likely to give no homework because positive expressions may influence the teacher’s mood and decisions.

- Independent variable: Smiling (student's behavior)
- Dependent variable: Teacher giving no homework

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✔ Summary Table:

| Question | Hypothesis | Independent Variable | Dependent Variable |
|--------|------------|----------------------|--------------------|
| 1 | High temperature increases radish germination. | Temperature | Radish germination |
| 2 | Studying with music decreases test scores. | Music during study | Test scores |
| 3 | Red food color increases fish consumption. | Food color | Amount of food eaten |
| 4 | More light increases plant growth. | Light exposure | Plant growth |
| 5 | Smiling increases chance of no homework. | Smiling | Homework assignment |

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💡 Tips for writing good hypotheses:
- Use "if...then..." structure.
- Be specific and measurable.
- Clearly identify what is being changed (IV) and what is being observed (DV).

Let me know if you'd like this formatted as a printable worksheet!