Convection Currents

Flashcard
•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are convection currents?
Back
Convection currents are the movement of fluid caused by differences in temperature and density, where warmer, less dense fluid rises and cooler, denser fluid sinks.
2.
FLASHCARD QUESTION
Front
What causes thunderstorms?
Back
Thunderstorms can be caused by convection currents that develop when warm, moist air rises and cools, leading to condensation and precipitation.
3.
FLASHCARD QUESTION
Front
What happens during a land breeze?
Back
A land breeze occurs when the land cools faster than the sea at night, causing cooler air from the land to flow towards the warmer sea.
4.
FLASHCARD QUESTION
Front
Which air is denser: cold air or warm air?
Back
Cold air is denser than warm air.
5.
FLASHCARD QUESTION
Front
What is the role of temperature in convection currents?
Back
Temperature differences create density differences in fluids, which drive the movement of convection currents.
6.
FLASHCARD QUESTION
Front
How does warm air behave compared to cold air?
Back
Warm air is less dense and rises, while cold air is denser and sinks.
7.
FLASHCARD QUESTION
Front
What is an example of convection in everyday life?
Back
An example of convection is the heating of water in a pot, where warm water rises to the top and cooler water sinks.
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