What are some properties of air? (1)
3. Create an annotated drawing
Use the Annotated Drawing poster to review the purpose and important characteristics of an annotated drawing. Students may want to review the Annotated Drawings at the back of the Science Notebook. They should make their drawings on the page [Explaining the compressibility of water and air] in their Science Notebooks. Their drawings should answer the questions below.
- How do you explain the difference in the compressibility of air and water?
- What would you see at the particle level to explain what is going on?
Note: You will need to select two drawings that offer different explanations for students to review in the next investigation. Try to find a drawing that portrays water as made of particles that are packed together (making it visible) and air as made of particles that are spread apart (making air invisible) and select it for the class to review. Select a second drawing that portrays an alternate explanation of the composition of water and air. Alternately, you can choose to use the Sample Annotated Drawings found in the References.
Recap the investigation
Explain that you are going to select two annotated drawings based on different ideas about why air is compressible and water is not. The class will discuss those drawings at the start of the next investigation.
