Upthrust & atmospheric pressure (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the name of the resultant upward force on a submerged object?
What is the name of the resultant upward force on a submerged object?
Upthrust
Why does a submerged object experience upthrust?
Why does a submerged object experience upthrust?
Bottom has more pressure than top
What is upthrust equal to?
What is upthrust equal to?
Weight of water displaced
When does an object float in water?
When does an object float in water?
Upthrust equals or exceeds weight
When does an object sink in water?
When does an object sink in water?
Upthrust is less than its weight
Why does an object denser than water sink?
Why does an object denser than water sink?
Upthrust is less than weight
What causes atmospheric pressure?
What causes atmospheric pressure?
Air molecules colliding with surfaces
What is atmospheric pressure at sea level?
What is atmospheric pressure at sea level?
Approximately 100 kPa
What happens to atmospheric pressure as altitude increases?
What happens to atmospheric pressure as altitude increases?
It decreases
Why does atmospheric pressure decrease with altitude?
Why does atmospheric pressure decrease with altitude?
Fewer air molecules above
What weather is associated with high-pressure systems?
What weather is associated with high-pressure systems?
Clear and calm
At higher altitudes, water boils at what temperature?
At higher altitudes, water boils at what temperature?
Lower temperature