Science: Middle School: Grades 6, 7 and 8 Quiz - Pressure 1 (Answers)
This Science quiz is called 'Pressure 1' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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Pressure is an effect which occurs when a force is applied on a surface. Pressure is the amount of force acting on a unit area. In order to calculate pressure, we need to know the force applied over a known area.
Try this Science quiz and see how well you understand pressure.
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1 Pa = 1N/1m2
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This is because pressure = force/area
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Pressure = force/area = 100N/20m2 = 5Pa
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Pressure = force/area, area = 3m x 2m = 6m2, pressure = 60/6 = 10Pa
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Area of base = 2 x 1 = 2m2 so pressure = 60/2 = 30Pa
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Area of two feet = 0.01 x 2 = 0.02 pressure = 600/0.02
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80cm = 0.8m, 100cm = 1m, area = 0.8 x 1 = 0.8m2, pressure = 400/0.8 = 500Pa
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Area of foot = 40cm x 50cm = 0.4m x 0.5m = 0.2m2, area of four feet = 0.8m2, pressure = 64,000/0.8
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