Buoyancy
Convection
100
Buoyant forces only work in what 2 states of matter?
Gases and Liquids
100
What type of energy causes convection to occur?
Heat
200
"Floating Up" and "Sinking Down" use which part of the Earth's interior as a reference point?
Core
200
Rewrite the following sentence and fill in the blanks.
"In convection cells, ______ fluids rise and ______ fluids sink."
In convection cells, warmer fluids rise and cooler fluids sink.
300
In the deep ocean, a giant squid uses a special organ to change it's buoyancy. If the squid uses the organ to have less buoyant force than gravitational force, what's going to happen to it?
The squid will sink.
300
Pretend that you own a bunkbed, like these kids below...
Why is it hotter in the top bunk than the bottom bunk?
Warmer air rises to the top of the room, and makes the person sleeping closer to the ceiling hotter.
400
Mr. Pencil is floating on top of the water in a bowl. Although he is floating in the water, what is he sinking in?
The air in the room.
400
Draw a convection cell. Use the following labels in your drawing: cooler fluid, warmer fluid, heat source.
500
A hot air balloon takes the following journey.
1. Its buoyancy is less than its gravitational force.
2. Its buoyancy is equal to its gravitational force.
3. Its buoyancy s more than its gravitational force.
Describe whether the balloon is rising, sinking, or at neutral buoyancy in steps 1, 2, and 3.
1. Sinking
2. Neutral Buoyancy
3. Rising or Floating
500
Draw a convection cell that you would find in the magma of the Earth under Antarctica. Be sure to label the cooler fluid sinking, warmer fluid rising, and the heat source.
