Name: _____gerald_______________________________________ ____ Date: _________ Block: Growing Plants Gizmo 1. Soil is a combination of tiny rock fragments and decayed plant materials. How do you think soil helps a plant? Soil provides nutrients and water to a plant. it allows the roots to anchor the plant Experiment 1: How Does the Amount of Water Affect Turnip Growth? 1. Choose the turnip seed to drag into each pot. 2. Drag the water slider to 100 mL for Plant A, leave at 50 for Plant B, and slide down to 20 mL for Plant C. 3. Which plant do you think will grow the highest and have the largest mass? _A_____ 4. Click Play and wait for the simulation to end. 5. Record your data below Plant Amount of Water A 100 ml B 50 ml C 20 ml 6. What was the independent variable for this experiment? water 7. What was the dependent variable for this experiment? Plant growth Height 9 cm 9 cm 8.8 cm Mass 0.9 g 2.0 g 1.3 g 8. List at least 4 constants for this experiment. Pot size, seeds, soil, light 9. Which amount of water was best for the turnip? 50 m 10. Did this agree with your hypothesis? xxxxxxx no 11. If this was a live experiment, would testing three plants be sufficient to ensure your data was reliable? Why or why not? The more plants the better but even 3 would work for a quick experiment Experiment 2: How Does the Amount of Light Affect the Growth of Plants? 1. Click Reset and Clear Pots. Then set-up the pots to test the independent variable for this experiment. Describe how you will set up each pot in the table below: Pot A B C Type of Seed turnip turnip turnip Water per Day 100 ml 100 ml 100 ml Number of Lights 1 2 3 2. Click Play to start. When the simulation is done, observe the plants. 3. Record your data here Type of Soil soil soil soil Pot Height of Plant Mass of Plant Appearance A 12cm 0.5 g Frail not too healthy but taller B 11 cm 0.9 g Healthy and tall C 9 cm 0.9 g Healthy but smaller 4. Look at the graph of your data under the Data tab of your Gizmo. What relationship can you make? All the plants were relatively the same height 5. What was your independent variable? Amount of light 6. Dependent variable? Plant growth 7. Which plant served as your control? Plant type, soil type, amount of water given Experiment 3: How Does _compost_and _ __fertilizer________ Affect _the plant growth______________? 1. Fill in the blanks above to create your own experiment given the materials provided by the Gizmo. 2. Form your hypothesis: If __i give the plant more food _____________________________________________________, then ____it will grow bigger and stronger__________________________. 3. Clear and reset the pots. Set up the pots to test the variable you are investigating. Describe how you set up each pot in the table below. Pot A B C Type of Seed Turnip Turnip Turnip Water per Day 100 ml 100 ml 100 ml Number of Lights 3 3 3 Type of Soil Soil and fertilizer Soil and compost soil 4. What is the independent variable? Fertilizer and compost 5. What is the dependent variable? Growth of plant 6. What are the controlled conditions/constants? Lights, seed, water amount, size pot 7. Which pot is the control group? C 8. Click Play to start. When the simulation is done, observe the plants and record your data below. Pot A B C Height of Plant 8.9 cm 9 cm 8.9 cm Mass of Plant 1.1 g 0.9 g 0.9 g Appearance Healthy and strong Healthy but not so strong Healthy but not so strong 9. What did you discover? Does this information support your hypothesis? Yes, because compost and fertilizer helps plants grow bigger and strongger 10. How could you improve your experiment? Name at least three ways. Add more plants Sun light vs lights Better soil 11. Answer the five assessment questions and check your answers. Not sure what 5 assessment questions are
