Bill Nye Buoyancy Notes
1. What does it mean to "displace" water? Explain.
To displace water means that an object moves or pushes water out of the way.
To displace water means that an object moves or pushes water out of the way.
2. Explain why the clay ball sinks but the same size clay boat floats.
The clay ball sinks because the shape of the clay affects the buoyancy, as well as surface area.
The clay ball sinks because the shape of the clay affects the buoyancy, as well as surface area.
3. Things displace as much water as they weigh.
4. Who was Archimedes? What did he discover?
Archimedes was a Greek man who was one day sitting in the bathtub. It was then he discovered that you could measure the volume of an irregular shaped object by measuring how much water they displaced. He ran out of the bathtub and shouted, "Eureka!"
Archimedes was a Greek man who was one day sitting in the bathtub. It was then he discovered that you could measure the volume of an irregular shaped object by measuring how much water they displaced. He ran out of the bathtub and shouted, "Eureka!"
5. How do fish control their buoyancy? Explain
Fish control their buoyancy by using swim bladders inside of them. These swim bladders can be controlled by the fish, and can be filled up with oxygen to rise or go down.
Fish control their buoyancy by using swim bladders inside of them. These swim bladders can be controlled by the fish, and can be filled up with oxygen to rise or go down.
6. Define negatively buoyant, positively buoyant, and neutrally buoyant.
Negatively buoyant is when something does not float.
Positively buoyant is when something can float.
Neutrally buoyant is when something is can neither float or sink (it stays in the middle).
Negatively buoyant is when something does not float.
Positively buoyant is when something can float.
Neutrally buoyant is when something is can neither float or sink (it stays in the middle).
7. Explain how hot air balloons work.
Hot air balloons have buoyancy. The hot air rushes to the top of the balloon faster than the cold air. The cold air then gets displaced, and the balloon floats.
Hot air balloons have buoyancy. The hot air rushes to the top of the balloon faster than the cold air. The cold air then gets displaced, and the balloon floats.