Science, Applied Science, & Technology Flashcards
What is a simple machine?
A device that either multiplies or redirects a force.
Force
A push or pull exerted on an object in an effort to change that object’s velocity.
Mechanical advantage
The amount by which force or motion is magnified in a simple machine.
Diameter
The length of a straight line that travels from one side of a circle to another and passes through the center of the circle.
Circumference
The distance around a circle, equal to 3.1416 times the circle’s diameter.
How is applied science different from science?
Science is motivated by curiosity to understand, where as applied science experiments are aimed at trying to find somthing useful.
What gives rise to technology?
An accident, science, or applied science.
Identify each of the following as a science experiment or an applied science experiment.
A. An experiment to determine how to make electronic circuits smaller.
B. An experiment to understand what factors affect how electricity runs in an
electronic circuit.
C. An experiment to figure out how to reduce electronic noise in an electronic circuit.
D. An experiment to figure out the speed of electrons as they flow through an electronic circuit.
A and C are applied science experiments.
A. An experiment to determine how to make electronic circuits smaller.
C. An experiment to figure out how to reduce electronic noise in an electronic circuit.
B and D are science experiments.
B. An experiment to understand what factors affect how electricity runs in an
electronic circuit.
D. An experiment to figure out the speed of electrons as they flow through an electronic circuit.
Which of the following would be considered technology?
A. A Classification scheme for all animals.
B. A vaccination that will keep all animals from contracting the flu.
C. A new diet for dogs that will lead to longer life.
D. An understanding of what causes urinary-tract infections in cats.
B and C are technology.
B : A vaccination that will keep all animals from contracting the flu.
C : A new diet for dogs that will lead to longer life.
List the six types of simple machines.
The lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw.
Which two simple machines look identical?
The inclined plane and the wedge.
What is the mechanical advantage of a first-class lever in which the fulcrum is ten inches from the resistance and 40 inches from the effort?
(distance from fulcrum to effort) ÷ (distance from fulcrum to resistance)
4 inches.
A shovel is in example of a lever. To what class does a shovel belong?
A third class lever.
What does the mechanical advantage in problem #8 mean?
The problem is what is the mechanical advantage of a first class lever in which the fulcrum is 10 inches from the resistance and 40 inches from the effort?
It means that the effort is magnified by 4.
A child’s see-saw is an example of a lever. To what class does it belong?
A first class lever.
