1. What are three things all plants need to survive?

2. Photosynthesis Warm Up

3. How do plants get energy and mass? Sunlight Water Carbon Dioxider

4. Where plants get their mass?

5. Where do plants get their mass?

6. Do gases have mass? Does the air weigh anything? Does the oxygen we breathe in weigh anything? Does the carbon dioxide in the air weight anything?

7. The majority of the mass in a plant comes from….. CARBON DIOXIDE!!! But how do we know?

8. Design an Experiment With your elbow partner, you will have 30 minutes to design an experiment (or more than 1) to show that the mass in a tree comes from carbon dioxide. Use the outline provided and summarize your experiments into an essay on the poster provided to present to your classmates.

9. Scientific Method Review What items do we need to identify while designing an experiment? How can we make our results more reliable?

10. Design an Experiment With your elbow partner, you will have 30 minutes to design an experiment (or more than 1) to show that the mass in a tree comes from carbon dioxide. Use the outline provided and summarize your experiments on the poster provided to present to your classmates.

11. Exit Ticket How can scientists know that gases like carbon dioxide have mass?