Lily Pad Buoyancy Lab - Thingiverse
Lily Pad Buoyancy Lab
Name:______________________
Key Terms Mass - the property of a matter that determines its gravitational attraction to other bodies. Unit: Kilograms(kg) Force - An interaction that leads to a change in the motion of an object. Unit: Newton(N) kg-m/s2 Volume - the amount of space occupied by an object. Unit: in3, cm3, m3 , expressed in cubic distance Density - the amount of mass in an occupied space. mass per unit volume (ρ – Greek letter rho) Buoyancy - The upward force that a fluid exerts on an object. Density*Volume*Gravity Weight - the downward force of mass an object has due to gravity. Mass*Gravity
Lesson An object will float if the volume and mass of the water displaced by the object is greater than the mass of the water. This is Archimedes’ principle of buoyancy. A steel ship can float because the combined mass of the ship and the air inside the steel ship is less than the amount of water that is displaced.
Archimedes of Syracuse (287-212 BC) - An ancient Greek mathematician, physicist, engineer, and astronomer discovered the principles of buoyancy when he stepped into a bath tub and saw that the water rose. Archimedes exclaimed “Eureka!” when he realized the principles of buoyancy.
Lily Pad Buoyancy Lab
Name:______________________
Materials
Container that can hold water at least 5 inches in diameter and at least 5 inches deep About 100 units of small currency (1-2 dollars in pennies) Lily Pad Floatation Device Various Ballast sizes (1 inch, 2 inch, 3 inch) Towel Pen or pencil Enough water, or other fluid, to fill the container and allow flotation of the Lily Pad
Bucket of Water
Lily Pad Floater
Ballast
Coins
Procedure 1. Fill the container with your fluid of choice. 2. Place the lily pad floater in the fluid. Perform the following 3 times. a. Carefully add mass, in the form of currency, on the lily pad until it sinks. b. Retrieve and count the coins. c. Record the number of coins that cause the lily pad to sink and graph the value. d. Dry the lily pad and the currency. 3. Average the Results of Step 2. 4. Add the 1 inch ballast and perform Steps 2 and 3. 5. Replace the 1 inch ballast with the inch ballast and repeat steps 2 and 3. 6. Estimate the amount of currency needed to sink the lily pad with the 3 inch ballast. 7. Replace the 2 inch ballast with the 3 inch ballast and perform steps 2 and 3.
Lily Pad Buoyancy Lab
Name:______________________
Results
Trial 1 Test 0 – No Ballast Test 1 – 1” Ballast Test 2 – 2” Ballast Estimate Test 3 – 3” Ballast Graph
Trial 2
Trial 3
Average
Name:______________________
Key Terms Mass - the property of a matter that determines its gravitational attraction to other bodies. Unit: Kilograms(kg) Force - An interaction that leads to a change in the motion of an object. Unit: Newton(N) kg-m/s2 Volume - the amount of space occupied by an object. Unit: in3, cm3, m3 , expressed in cubic distance Density - the amount of mass in an occupied space. mass per unit volume (ρ – Greek letter rho) Buoyancy - The upward force that a fluid exerts on an object. Density*Volume*Gravity Weight - the downward force of mass an object has due to gravity. Mass*Gravity
Lesson An object will float if the volume and mass of the water displaced by the object is greater than the mass of the water. This is Archimedes’ principle of buoyancy. A steel ship can float because the combined mass of the ship and the air inside the steel ship is less than the amount of water that is displaced.
Archimedes of Syracuse (287-212 BC) - An ancient Greek mathematician, physicist, engineer, and astronomer discovered the principles of buoyancy when he stepped into a bath tub and saw that the water rose. Archimedes exclaimed “Eureka!” when he realized the principles of buoyancy.
Lily Pad Buoyancy Lab
Name:______________________
Materials
Container that can hold water at least 5 inches in diameter and at least 5 inches deep About 100 units of small currency (1-2 dollars in pennies) Lily Pad Floatation Device Various Ballast sizes (1 inch, 2 inch, 3 inch) Towel Pen or pencil Enough water, or other fluid, to fill the container and allow flotation of the Lily Pad
Bucket of Water
Lily Pad Floater
Ballast
Coins
Procedure 1. Fill the container with your fluid of choice. 2. Place the lily pad floater in the fluid. Perform the following 3 times. a. Carefully add mass, in the form of currency, on the lily pad until it sinks. b. Retrieve and count the coins. c. Record the number of coins that cause the lily pad to sink and graph the value. d. Dry the lily pad and the currency. 3. Average the Results of Step 2. 4. Add the 1 inch ballast and perform Steps 2 and 3. 5. Replace the 1 inch ballast with the inch ballast and repeat steps 2 and 3. 6. Estimate the amount of currency needed to sink the lily pad with the 3 inch ballast. 7. Replace the 2 inch ballast with the 3 inch ballast and perform steps 2 and 3.
Lily Pad Buoyancy Lab
Name:______________________
Results
Trial 1 Test 0 – No Ballast Test 1 – 1” Ballast Test 2 – 2” Ballast Estimate Test 3 – 3” Ballast Graph
Trial 2
Trial 3
Average
