Science Graphing Practice Worksheet | efarmers.ng - Free Printable

It looks like you've uploaded an image of a Life Science worksheet titled "Graphing in Life Science: Making and Reading Graphs", designed for ESL/ELL students. The worksheet includes a data table, a graph to be completed, and several questions related to interpreting the data.

Let’s go through the main task on this worksheet and solve it step by step, explaining each part clearly.

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🌱 Task Overview:

A student is studying how different concentrations of growth hormone affect plant height over 2 weeks. The data is given in a table, and the student must:

1. Graph the data.
2. Identify variables.
3. Answer questions based on the graph and data.

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🔍 Step 1: Understand the Data

Here's the provided data:

| Hormone Solution (mL) | Plant Height at 2 Weeks (cm) |
|------------------------|-------------------------------|
| 0 | 11.5 |
| 5 | 15.5 |
| 10 | 20.0 |
| 15 | 28.5 |
| 20 | 31.0 |

We are to plot Hormone Solution (mL) on the x-axis (independent variable) and Plant Height (cm) on the y-axis (dependent variable).

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✏️ Step 2: Plot the Graph

We’ll plot each point from the table:

- (0, 11.5)
- (5, 15.5)
- (10, 20.0)
- (15, 28.5)
- (20, 31.0)

Then draw a smooth curve or line connecting the points (since plant growth is continuous and likely follows a trend).

> ⚠️ Note: The graph shows that plant height increases with more hormone, but the increase slows down after 15 mL — suggesting a diminishing return or plateau.

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❓ Step 3: Answer the Questions

#### 1. What is the independent variable?

✔ Answer: Hormone Solution (mL)

🔹 *Explanation:* This is what the student changes intentionally. It's plotted on the x-axis.

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#### 2. What is the likely plant height at 8 mL of hormone solution?

We need to estimate between 5 mL (15.5 cm) and 10 mL (20.0 cm).

Let’s calculate the rate of change:
- From 5 to 10 mL: 5 mL → 4.5 cm increase
- So, per mL: ~0.9 cm increase
- From 5 mL to 8 mL: +3 mL → 3 × 0.9 = 2.7 cm
- 15.5 + 2.7 = 18.2 cm

✔ Answer: Approximately 18.2 cm

> 💡 You can also visually estimate from the graph if drawn correctly.

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#### 3. What is the plant height at 20 mL?

✔ Answer: 31.0 cm

This value is directly from the table.

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#### 4. Make a claim (based on this graph).

✔ Example Claim:
*As the concentration of growth hormone increases, plant height increases up to a point, but the rate of growth slows after 15 mL.*

🔹 *Why?* Because the plant height goes up steadily at first, but the increase from 15 mL to 20 mL is only 2.5 cm (from 28.5 to 31.0), compared to larger jumps earlier.

This suggests saturation — the plant may have reached its maximum growth potential.

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🎯 Summary of Answers:

| Question | Answer |
|--------|--------|
| 1. Independent variable | Hormone Solution (mL) |
| 2. Plant height at 8 mL | ~18.2 cm |
| 3. Plant height at 20 mL | 31.0 cm |
| 4. Claim | Growth hormone increases plant height, but the effect levels off at higher concentrations. |

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✔ Additional Notes:

- The worksheet includes other graphs (e.g., bird food consumption, temperature changes), but your focus seems to be on the plant growth section.
- The "KEYS Included!" label means answer keys are provided separately (likely for teachers).
- The ESL/ELL tag indicates simplified language and visual support for English learners.

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📊 Tips for Students:

- Always label axes clearly.
- Use consistent scales.
- Connect points with a smooth curve if data shows a trend.
- Interpolation (estimating between points) is key for question #2.
- Extrapolation (beyond data range) should be avoided unless supported.

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Would you like me to generate a completed version of the graph or help with any of the other sections (like the bird or temperature graphs)?