Pre-Lab-Penny Boats-Physical Science

What size aluminum foil will you be using for your boat?

• 20 cm x 20 cm

• 5 cm x 5 cm

• 10 cm x 5 cm

• 10 cm x 10 cm

What size beaker are you using to collect the water when the boat and pennies are added to the displacement tank?

• 250 mL

• 150 mL

• 100 mL

• 400 mL

How will you calculate the Experimental MASS of water displaced by the boat and pennies?

• Pour the water into the graduated cylinder and record the mass.

• Subtract.  The mass of the beaker after the boat sank - the mass of the dry, empty beaker

• Subtract.  The mass of the dry,empty beaker - the mass of the beaker after the boat sank.

• We don't actually have to calculate the experimental mass of the water.  We only have to get the volume.

How do you determine the VOLUME of the water that was displaced by the boat and pennies?

• Rearrange the density equation to solve for volume 

• We don't actually need the volume of water displaced by the boats and pennies.

• Record the volume using the measurements on the beaker

• Transfer the water from the beaker to a graduated cylinder and record the volume.

When doing the % error calculation, you are comparing the...

• the number of pennies you guessed your boat would hold vs the actual number of pennies your boat held.

• experimental volume of water displaced vs the calculated volume of water displaced.

• We are not calculating % error in this lab.

• experimental mass of water displaced vs the calculated mass of water displaced