WorksheetsScience Exam Practice (Systems in Action)
Total questions: 17
Worksheet time: 11mins
Which of the following is not a contact force?
Spring Forces
Frictional Forces
Air Resistance Forces
Static Forces
The best way to reduce friction is to add a...
(a)
Which force depends on the force of gravity?
Mass
Weight
Magnetism
Static electricity
(Work output ÷ Work input) x 100% This equation is used to find...
(a)
Which of these are part of the criteria to evaluate a system
Efficiency
Safety
Quality
Cost
Automation
What is productivity?
The amount by which a machine can multiply the input force
The amount by which a machine can multiply the output force
How well a machine can work
The amount of output that is produced per unit of time
Wei uses a pulley system to lift a box. She pulls the rope a distance of 3m, using a force of 50N. If work done on the box is 120J, what is the efficiency of the pulley system?
(a)
Which classes of lever(s) are the input force and the output force in the same direction? Answer like this: 5th class and 4th class (not the correct answer)
(a)
What is not a way in which a machine makes work easier?
Increasing the distance
Increasing the force
Increasing the energy
Changing the direction
What class of lever is this diving board?
1st class
2nd class
Double class
3rd class
If the length you pulled is 2 m and you pulled with a 10 N, what is the IMA of the pulley?
20
5
196
3
To increase the MA of a wedge, you need to make it
Sharper and thicker
Sharper and thinner
Longer and thinner
Sharper and longer
What machine is used for measuring force?
(a)
The amount of matter in an object is the
(a)
How do you calculate work. Example: time in hours x length in kilometers. make sure to use the units
(a)
The worst anime to ever exist is...
(a)
When an object is falling from the sky, which of these facts are true?
Its gaining kinetic energy
Its gaining gravitational potential energy
Its gaining gravitational force
Its losing gravitational potential energy
Its gaining potential energy
