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- Hey Mrs. Frizzle, what are you-AHHHH! WHAT ARE YOU DOING??!?
- I am just taking you back to our school to help me teach my students about lava lamps.
- I'm still not happy about being kidnapped. You could have scheduled an appointment and maybe get me to your school legally.
- Bill you and I both know I couldn't have done that. We have a test tomorrow, and you still owe me one.
- Yes hello everyone. As your teacher said, my name is Bill Nye and I'm here to talk about convection.
- Hey class. Today we have a special guest. His name is Bill Nye. You all have watched his videos in class. He is here today to talk about lava lamps, and how they work.
- As the lava gains more density it starts to slow down, causing the lava to fall back down to the heater, where the process starts again.
- Lava lamps use convection to work. There is heat at the bottom which makes the "lava" warm up, and become less dense.Lava lamps use convection to work. There is heat at the bottom which makes the "lava" warm up, and become less dense.
- The lava is now less dense than the liquid around it, causing the lava to rise. There is no heater at the top so the lava cools down and gains density
- Does this only occur in a lava lamp?
- Correct, great job class. Mrs. Frizzle your students are amazing.
- Does anyone want to sum up what convection is?
- It is a motion or cycle where temperature is always being changed, and the density and speed of an object is also always changing.
- That was a very good question. This happens a lot in our world. One occurrence is in the Earth. Soliquid matter in our mantle expands and moves farther but then closer to the core in like a circular motion. The core or our Earth makes this happen. It also happens in hot air balloons and storms?
- *Bill Nye theme playing*
- *Bill Nye theme playing*
- Bye Mr Nye!!!!
- Bye Mrs. Frizzles class!!!
- *Bill Nye theme playing*
- *Bill Nye theme playing*
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