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Test your basic knowledge |
Forces Motion And Technology
Start Test
Study First
Subject
:
science
Instructions:
Answer 16 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A device that helps do work by either overcoming a force or changing the direction of the applied force
Machine
Inclined plane
Mechanical advantage
Work
2. A quantity - usually expressed as a percentage - that measures the ratio of work output to work input; it can be calculated by dividing work output by work input.
Machine
Power
Wheel and axle
Mechanical efficiency
3. A simple machine consisting of two circular objects of different sizes; the wheel is the larger of the two circular objects
Lever
Mechanical efficiency
Compound machine
Wheel and axle
4. The work done on a machine; the product of the input force and the distance through which the force is exerted
Work input
Pulley
Compound machine
Mechanical advantage
5. Simple machine consisting of a bar free to pivot about a fixed point called the fulcrum.
Work input
Mechanical efficiency
Lever
Joule
6. A simple machine that is a straight - slanted surface - which facilitates the raising of loads; a ramp
Work
Work input
Joule
Inclined plane
7. The rate at which work is done or energy is transformed
Pulley
Work output
Power
Mechanical efficiency
8. The transfer of energy to an object by using a force that causes the object to move in the direction of the force
Screw
Lever
Work
Mechanical advantage
9. A simple machine that consists of a wheel over which a rope - chain - or wire passes
Machine
Inclined plane
Pulley
Watt
10. A type of simple machine that consists of an inclined plane wrapped around a cylinder
Screw
Wedge
Pulley
Machine
11. The unit used to express power; equivalent to joules per second
Watt
Screw
Mechanical efficiency
Wedge
12. A simple machine that is made up of two inclined planes and that moves; often used for cutting
Work
Lever
Work output
Wedge
13. The unit used to express energy; equivalent to the amount of work done by a force of 1 N acting through a distance of 1 m in the direction of the force
Screw
Work input
Wedge
Joule
14. A machine made of more than one simple machine
Watt
Mechanical advantage
Lever
Compound machine
15. A number that tells how many times a machine multiplies force.
Mechanical advantage
Lever
Wedge
Work
16. The work done by a machine; the product of the output force and the distance through which the force is exerted
Work output
Pulley
Power
Watt