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Structures: Form and Function Flashcards | StudBud
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Structures: Form and Function
Structures: Form and Function
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A quiz to review the concepts of the Structures and Heat Energy units for Grade 7 students
Flashcards
29 cards
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Questions
29
Answers
1
the fulcrum is between the input force and the load (output force) in this class of lever.
Class II Levers
All of the above are true
Class III Levers
Class I Levers
2
The point around which a structure's mass is equally balanced
balance point
centre of gravity
none of the above
stability
3
The force created when you pull on an elastic is called
torsion
tension
compression
shear
4
the load is between the input force and the fulcrum
in this type of lever?
None of the above are true
First class lever
Class II Lever
Class III Lever
5
How much work has Spencer done when he lifts a 4.0N glass of water 0.25 M? (Khalil was in the back just watching)
16 J
1.0 metres
1.0 N m
both red & blue are correct
6
How much work was done if Ethan uses a force of 10 N to move a rock 35 metres while Corson just sat and watched.
350 Newtons
350 J
35 kg
all of the above are correct
7
Pulleys work by
all of the above are true
increasing the distance over which force is applied
Changing the direction of a force
increasing the force that can be applied to an object
8
Determines how visually pleasing something is
repetitive strain injury
aesthetics
ergonomics
symmetry
9
On her study cue cards, Avery wrote the definition as the force applied to the machine for which term?
output force
the input force
the load force
red & gold are both correct
10
A force produced when objects rub against each other
strain injury
none of the above
friction
solar
11
Over the November Break Richard wants determine the mass of his 2.2 kG math text on Mars (g = 3.7 N/kg).
9.8 N
2.2 kG
9.8 kG
8.1 N
12
The tendency of an object to stay at rest or to preserve its state of motion is called
none of the above are correct
acceleration
inertia
velocity
13
Which does not belong to the particle theory of matter ?
all matter is made up of tiny particles
particles move faster when heated.
particles are moving all the time
particles are not attracted to each other
14
How much work does Sofina do if she uses 100 N of force to move a cart 1m ? (Corson was there but didn't help)
100 N m
both red & blue are true
Ludwig just doesn't work
100 J
15
Which formula is used to calculate the mechanical advantage of the following lever?
the mechanical advantage = 0 when fulcrum in the middle
output dist / input dist.
effort force / load force
load force / effort force
16
An object with a mass of 60 kg on Earth would have a mass on the Moon of
0 kg - objects don't have a mass on the moon
10 kg
60 kg
360 kg
17
As part of her young offenders rehab program, Meredith had to push the elderly up wheelchair ramps with a
Ideal M.A. = ramp length / rmp height
V = dis x time
Mech Ad = For out / For in
all of the above are true
18
What is the mass of a 50N man on Earth (given gravity approximately = 10 N/kg)
500 N
5 kg
500 kg
none of the above are true
19
Which of the following is / are correct concerning Evan?
Evan has a weight of 55 kG
Evan is made up of 55 kg of substance
All of the above are correct and deal with Evan's weight.
Evan has a mass of 55.0 N
20
With Corson just watching, if four people each apply a force of 500 N and move the rock 2m how much work was done?
4000 J
4.0 kJ
all of the above are true
4000 N m
21
A push or pull on an object is called a
friction
mass
all of the above a correct
a force
22
How long will it take Lucas driving at 100 km/hr to make it through a school bus zone 2.0 km long
0.2 minutes
500 km
both blue & gold are correct
0.02 hours
23
What is the approximate weight of 1 35 kG piece of brick?
13.5 N
135 kg
135 N
1350 N
24
A car travelling 50 km/hr in a straight line for 5 hours will travel
10 km
250 km
250 000 m
both gold & blue are true
25
Which formula is used to determine the distance an object travels in a certain time?
distance = mass x time
distance = velocity x time
distance = mass / time
distance = velocity / time
26
Aamaya locked her younger sibling in the bathroom. The door handle radius is 10cm and the axle 5 cm What is the I.M.A. ?
20
50
2
none of the above
27
Lilla was in the gym bench pressing a bar with two 30 kg weights on each side. What total weight was she lifting?
all of the above are true
120 kG
1176 N
60 kG
28
Mechanical efficiency is found by using the following equation
M.E. = Work out x work in
M.E. Force out x force in
M.E. = Force out / force in
M.E. = Work out / work in
29
The quantity of matter in a substance is called
Newton
weight
mass
load
