Convection and Density
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of density?
Back
Density is the amount of matter (mass) packed into a space (object).
2.
FLASHCARD QUESTION
Front
What happens to cool/cold air in terms of pressure?
Back
Cool/cold air that sinks towards the Earth's surface creates a high pressure area.
3.
FLASHCARD QUESTION
Front
Which substance would float in water? (Hint: water has a density of 1g/cm³)
Back
Cork would float in water.
4.
FLASHCARD QUESTION
Front
What causes warm air to rise in a room?
Back
Warm air rises because of convection.
5.
FLASHCARD QUESTION
Front
What is the initial source of energy that creates winds?
Back
The sun is the initial source of energy that creates winds.
6.
FLASHCARD QUESTION
Front
What is convection?
Back
Convection is the transfer of heat through the movement of fluids (liquids and gases).
7.
FLASHCARD QUESTION
Front
How does density affect whether an object will float or sink?
Back
An object will float if its density is less than the density of the fluid it is in; it will sink if its density is greater.
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