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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
Wedge
Work input
Machine
Work
2. A machine made of more than one simple machine
Compound machine
Pulley
Watt
Power
3. The work done on a machine; the product of the input force and the distance through which the force is exerted
Lever
Pulley
Screw
Work input
4. The unit used to express power; equivalent to joules per second
Power
Work output
Work
Watt
5. A simple machine consisting of two circular objects of different sizes; the wheel is the larger of the two circular objects
Work
Wedge
Work output
Wheel and axle
6. A type of simple machine that consists of an inclined plane wrapped around a cylinder
Mechanical advantage
Screw
Work input
Work
7. The rate at which work is done or energy is transformed
Machine
Mechanical advantage
Watt
Power
8. A simple machine that is made up of two inclined planes and that moves; often used for cutting
Wheel and axle
Work output
Compound machine
Wedge
9. The work done by a machine; the product of the output force and the distance through which the force is exerted
Lever
Pulley
Wheel and axle
Work output
10. 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.
Pulley
Mechanical efficiency
Work input
Wheel and axle
11. A number that tells how many times a machine multiplies force.
Machine
Mechanical advantage
Work input
Inclined plane
12. 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
Joule
Watt
Pulley
Compound machine
13. A simple machine that consists of a wheel over which a rope - chain - or wire passes
Power
Work output
Pulley
Work
14. The transfer of energy to an object by using a force that causes the object to move in the direction of the force
Joule
Work
Lever
Power
15. A simple machine that is a straight - slanted surface - which facilitates the raising of loads; a ramp
Screw
Watt
Work
Inclined plane
16. Simple machine consisting of a bar free to pivot about a fixed point called the fulcrum.
Wedge
Work input
Compound machine
Lever