Hooke's Law does not apply if....

The spring is stretched too far

the spring is not made of steel

masses are used instead of weights

the elastic limit is the point at which ..

the spring does not return to its original size

there is no more room to attach masses

Where would you find the largest pressure?

Close to ground on the Scotch oval

In a rockpool on the Great Barrier Reef

Hydraulics are based on the concept that:

Fluid pressure is always unequal

Fluid always takes the path of greatest resistance

When a boat is float on a river,

its upthrust is equal to its weight.

its weight is larger than its upthrust.

its upthrust is larger than its weight.

Army tank tracks are useful for travelling through the mud because..

they decrease the pressure the vehicle exerts on the ground

they decrease the force the vehicle exerts on the ground

they increase the force the vehicle exerts on the ground

they increase the pressure the vehicle exerts on the ground

Which of the statements is true?

The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.

The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.

The bottom of the shoe exerts the same pressure as the bottom of the boot.

A person wearing steel toe capped boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?

The person with the stiletto heels because they have a smaller surface area in contact with the floor

The person wearing the boots because the boots have a larger surface area in contact with the floor

The person with the stiletto heels because they have a larger surface area in contact with the floor

The person wearing the boots because the boots have a smaller surface area in contact with the floor

Year 8 - Forces

Physics

8th Grade

NGSS covered

Used 338+ times

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28 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Friction is a force that acts in an ___________ direction of movement.

similar

opposite

parallel

west

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is an example of friction that is helpful?

Brakes used on a bike

Tires from a car on the road

Tread on the bottom of your shoes

All are examples that are helpful

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is 'drag' another name for?

dressing up

air resistance

friction

weight

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the name for a single force on an object with the same effect as all the forces combined?

big

total

resultant

sum

How can friction be reduced?

reduce the force acting between the 2 surfaces

reduce the roughness of the 2 surfaces coming in contact

use wax, grease or oil

all of the above are ways of reducing friction

Which materials do not break easily and return to their original shape when forces acting on them are removed?

Brittle

Elastic

plactic

strong

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Robert Hooke investigates springs by seeing how a load affected their.....

energy

correlation

temperature

extension

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Year 8 - Forces

Friction is a force that acts in an ___________ direction of movement.

Which of the following is an example of friction that is helpful?

What is 'drag' another name for?

What is the name for a single force on an object with the same effect as all the forces combined?

How can friction be reduced?

Which materials do not break easily and return to their original shape when forces acting on them are removed?

Robert Hooke investigates springs by seeing how a load affected their.....

Hooke's Law can be shown on a graph as...

Hooke's Law does not apply if....

the elastic limit is the point at which ..

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