Forces, Pressure, and Moments

Forces, Pressure, and Moments

7th Grade

15 Qs

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Forces, Pressure, and Moments

Forces, Pressure, and Moments

Assessment

Quiz

Physics

7th Grade

Medium

Created by

Adeolu Ogunniyi

Used 2+ times

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15 questions

Show all answers

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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