Convection Review

Flashcard
•
Science
•
8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is convection current?
Back
A convection current is a cycle of movement in fluids (liquids and gases) where warmer, less dense material rises and cooler, denser material sinks, creating a continuous flow.
2.
FLASHCARD QUESTION
Front
Why does hot air rise?
Back
Hot air rises because it is less dense than cooler air.
3.
FLASHCARD QUESTION
Front
How does the heat source affect convection currents in the atmosphere and ocean?
Back
The heat source for Earth is the sun, which heats the air and water from above, influencing the direction and flow of convection currents.
4.
FLASHCARD QUESTION
Front
What is the process called when hot material rises and cooler material sinks?
Back
The process is called convection.
5.
FLASHCARD QUESTION
Front
What is the main reason for currents in the ocean and air?
Back
The main reason is that the sun heats air and water more at the equator because it receives more direct sunlight.
6.
FLASHCARD QUESTION
Front
What is the difference between convection in water and air?
Back
Warm water is less dense than warm air, which can lead to different behaviors in convection currents.
7.
FLASHCARD QUESTION
Front
What role does density play in convection?
Back
Density differences drive convection; warmer, less dense materials rise while cooler, denser materials sink.
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