How is thermal energy transferred during convection?
The speed of the molecules [___].
The density of the fluid [___].
The fluid [___].
The kinetic energy of the molecules [___].
Which statements best describe convection? Check all that apply.Convection occurs in solids.Convection occurs in liquids and gases.Convection transfers thermal energy.Convection transfers potential energy.Convection occurs until all of the fluid is at the same temperature.Convection occurs only one time, no matter the temperature.
Which describes the motion in a convection current?
The diagram shows molecules in a fluid. Explain the sequence of events that happens when this fluid cools down. Be sure to focus on what happens to the molecules and to the fluid in general. Five events should be included in your answer.
1. The fluid loses heat. 2. Its molecules lose kinetic energy and move more slowly. 3. The molecules move closer together, causing the fluid to contract and become denser. 4. The cooler, denser fluid sinks. 5. Warmer, less-dense fluid rises to replace it, creating a convection current that moves heat through the fluid.
In a lava lamp, a waxy substance rises and falls repeatedly. What causes the waxy substance to rise? Check all that apply.
What happens at night?
Label A: [___]
Label B: [___]
Label C: [___]
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