Waterline Calculation for Cardboard Boat

What is the waterline of a boat?

• the height the water hits on the inside of your boat

• the height of the water on the outside of the boat

• the distance the boat will travel per paddle of the oar

• the mark the water leaves on a cardboard boat

What is the FIRST step of finding the waterline of your boat?

• Find the area of the bottom of your boat

• Find the volume of water your boat will be in

• Find the volume your boat will hold

• Determine the weight that will be in your boat

Tags

CCSS.3.MD.A.2

How do you find the area of your boat?

• Find the area of each shape in the bottom of your boat

• Use an AI calculator and the weight of your passengers

• Find the length, width, and height of your boat and multiply them

What is Archimedes' Principle tell us?

• The weight in the boat equals the weight of the water displaced

• The weight of the boat doesn't change the height of the water

• The volume of an object depends on the gravity of the object

• The volume of the object in the boat matches the volume of water displaced.

The SECOND thing we need to do to find the water line is....

• Find the weight of the boat plus the weight of the passengers

• Find the volume of the passengers in the boat

• Find the weight of one passenger and the oars of the boat

• Find the volume of boat and the passengers in the boat

Tags

CCSS.3.MD.A.2

One cubic foot of water weighs....

• 62 lbs

• 10 lbs

• 6.24 lbs

• 78.2 lbs

Tags

CCSS.4.MD.A.1

After we find the weight of our passengers/boat and the cubic feet of water, what should we do next?

• Divide the weight in the boat by the weight of 1 cubic foot of water

• Multiply the weight in the boat and the weight 1 cubic foot of water

• Add the weight in the boat to the weight of 1 cubic foot of water

• Subtract one cubic foot of water from the weight of passengers

Tags

CCSS.3.MD.A.2

The last thing we need to find the water in what?

• Multiply the area of the boat by the weight of one cubic foot of water

• Divide the weight needed to be displaced by the area of the bottom of the boat

• Find the volume of the boat and divide it by the weight of 1 cubic foot of water

• Divide the area of the bottom of the boat by the weight needed to be displaced in the boat

Tags

CCSS.HSG.MG.A.2

What does the waterline calculation tell us about our boat?

• How much water will end up in the boat

• How much water the passengers need to move away from the boat

• How high the water will be on the outside of the boat once it has passengers in it

• How high the water will be on the outside of the boat before you put any passengers in it

Tags

CCSS.3.MD.A.2

What happens if our waterline is too high on our boat?

• It will make it easier to paddle the boat

• It will make it harder to paddle the boat

• It will make the boat faster in the water

• It will make the boat slower in the water