
Forces, Pressure, and Moments
Quiz
•
Physics
•
7th Grade
•
Medium
Adeolu Ogunniyi
Used 2+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the SI unit of force?
Watt
Newton (N)
Joule
Volt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define pressure and provide its formula.
P = F/A
P = F
P = V/A
P = F/V
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the difference between mass and weight.
Mass is the amount of matter in an object, weight is the force exerted on an object due to gravity.
Mass is measured in pounds, weight is measured in kilograms.
Mass is the weight of an object, weight is the size of an object.
Mass is the force of gravity on an object, weight is the amount of matter in an object.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does an increase in surface area affect pressure?
Pressure becomes negative
Pressure decreases
Pressure remains constant
Pressure increases
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the principle of moments?
The principle of moments only applies to objects with uniform density.
The principle of moments is only valid for objects with a mass less than 1 kg.
The principle of moments states that for an object in equilibrium, the sum of the clockwise moments about any point is equal to the sum of the anticlockwise moments about the same point.
The principle of moments states that the sum of clockwise moments is greater than anticlockwise moments.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calculate the pressure exerted by a force of 200N on an area of 2m^2.
400 Pa
150 Pa
250 Pa
100 Pa
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Give an example of a contact force and a non-contact force.
Tension (contact force) and Electrostatic force (non-contact force)
Friction (contact force) and Gravity (non-contact force)
Normal force (contact force) and Buoyant force (non-contact force)
Magnetism (contact force) and Air resistance (non-contact force)
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