What are three things all plants need to survive?

Photosynthesis Warm Up

How do plants get energy and mass?

• Sunlight• Water• Carbon Dioxider

Where plants get their mass?

Where do plants get their mass?

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?

The majority of the mass in a plant comes from…..

• CARBON DIOXIDE!!!

• But how do we know?

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.

Scientific Method Review

• What items do we need to identify while designing an experiment?

• How can we make our results more reliable?

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.

Exit Ticket

• How can scientists know that gases like carbon dioxide have mass?