Unit 2 Review
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is buoyancy?
Back
Buoyancy is the ability or tendency to float in air, water, or another fluid.
2.
FLASHCARD QUESTION
Front
What is the purpose of the burner in a hot air balloon?
Back
The burner heats the air inside the balloon for lift.
3.
FLASHCARD QUESTION
Front
What is a glider?
Back
A glider is an aircraft whose flight does not depend principally on an engine.
4.
FLASHCARD QUESTION
Front
True or False: The buoyant force on a submerged object is equal to the weight of the fluid displaced by the object.
Back
True.
5.
FLASHCARD QUESTION
Front
What inspiration did Greek myths provide to modern civilization?
Back
Greek myths inspired the concept of human flight.
6.
FLASHCARD QUESTION
Front
Define gravity.
Back
Gravity is the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
7.
FLASHCARD QUESTION
Front
What is viscosity?
Back
Viscosity is a measure of a fluid's resistance to flow.
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