1. Today’s Agenda…
Bellringer: Explain the difference between mass and volume.
Activity: Crazy Canisters

2. Crazy Canisters How can I make a canister… float? remain suspended?
sink?

3. Materials Canister and lid Marbles glass pebbles paper clips Pennies
Washers
water tank

4. Data You must record what you do to each canister and your results
What did you put in it?
How many of each item?

5. Predicted Items in Canister Actual Items in Canister
Data
Canister
Predicted Items in Canister
Actual Items in Canister
FLOAT
REMAIN SUSPENDED
SINK

6. Crazy Canisters Were your predictions correct? Explain.
What did you change about each canister to make them sink, float, suspend?
Did you change the mass or volume? Explain.

7. Density The amount of mass in a given volume
Density = mass divided by volume
The density of water is 1.0 g/mL or 1.0 g/cm3
If an object has a density less than water it floats
If an object has a density more than water it sinks