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Vocabulary
Vocabulary II and Concepts
Concepts II
Concepts III
Concepts IV
100
A sloping surface used to move objects from one level to another.
What is an inclined plane?
100
A simple machine made of a grooved wheel and a rope.
What is a pulley?
100
A screw with many threads is _______ to drive into wood? A. harder B. Easier C. more dangerous D. Impossible
What is B. easier?
100
To lift a heavy object with the lease amount of effort, you should put the fulcrum of a first class lever _________?
What is closer to the resistance?
100
A can opener includes a wedge, gears, a second class lever, and a wheel and axle. The can opener is an example of a ____________?
What is a compound machine?
200
A unit for measuring force.
What is a Newton?
200
Force applied to a simple machine.
What is Effort?
200
The force caused by objects rubbing against each other is called?
What is friction?
200
A doorknob and a faucet handle are example of ________?
What are wheels and axles?
200
Rolling an object on wheels requires less force than dragging the object because _________? A. The object has less weight. B. The object is lubricated. C. gravity pulls the object D. the wheels reduce friction.
What is D. The wheels reduce friction?
300
A simple machine used to split or separate objects.
What is a wedge?
300
Which 2 are examples of simple machines: A. combine, bicycle B. Fan, elevator C. inclined plane, wedge D. Vacuum cleaner, television
What is C. Inclined plane, wedge?
300
Simple machines are useful because they let us do the same amount of work with less ___________.
What is effort?
300
Which of the following are examples of wedges? A. pins, knives, and chisels. B. pencils, hockey sticks, and drum sticks. C. brooms, fishing rods, and wheelbarrows. D. flagpoles, clotheslines, and bicycle gears.
What is A. pins, knives, and chisels.
300
Which of the following does not have a wedge? A. door stop B. axe C. knife D. ramp
What is a ramp?
400
An inclined plane wrapped around a rod.
What is a screw?
400
In which example is work being done? A. A person looks at a painting in a museum. B. Three adults push on a stalled car but it does not move. C. A child reads a page in a book. D. A soccer player kicks a ball into the goal?
What is D. A soccer player kicks a ball into the goal?
400
The wedge is a simple machine made up to 2 or more ________________?
What are inclined planes?
400
When one gear turns another gear, force is ________?
What is transferred?
400
A piano stool uses what kind of simple machine to adjust the height? A. wedge B. screw C. pulley D. lever
What is B. a screw?
500
A rigid bar that pivots on a fulcrum.
What is a lever?
500
Objects that are moving have ________energy?
What is kinetic energy?
500
Work is calculated by multiplying __________?
What is force x distance?
500
All of the following simple machines change the direction of applied force EXCEPT the _________? A. first-class lever B. wheel and axle C. screw D. fixed pulley
What is B. Wheel and Axle
500
True of false? In order for gears to work the gears need to be turning in opposite directions.
What is true?