1. Water Investigation 2, Part 2 Sinking and Floating Water

2. Investigation Question  What do you think will happen if you put hot water in a container of room-temperature water?

3. Focus Questions  Is hot water denser or less dense than room-temperature water?  Is cold water denser or less dense than room-temperature water?

4. Today’s Objective (Goal)  to determine what happens when hot and cold water are placed into room-temperature water

5. Sink/Float Demonstration  Which of these items will sink? Float? rubber stopper rubber stopper wooden bead wooden bead cork cork penny penny

6. Items That Float  If the item floats, it is less dense than the water.

7. Items That Sink  If the item sinks, it is more dense than the water.

8. Material Demonstration  how to handle materials vial & stick assembly vial & stick assembly

9. Hot Water Challenge  Start hot-water challenge.  Discuss observations of hot water.

10. Cold Water Challenge  Start cold-water challenge.  Discuss observations of cold water.

11. Summary  hot investigation  cold investigation

12. Material Clean-Up

13. Wrap Up  Record observations  Make word bank entries Float = less dense Float = less dense Sink = more dense Sink = more dense  Return to & answer focus questions

14. Focus Questions  Is hot water denser or less dense than room-temperature water?  Is cold water denser or less dense than room-temperature water?