L1 & L2
L3 & L4
L5 & L6
L7 & L8
L9, L10, & L11
100
Q. What is the purpose of machines?
A. To help humans do work and use energy efficiently.
100
Q. Name the Six Simple Machines.
A. Wheel & Axle, Pulley, Wedge, Inclined Plane, Lever, and Screw.
100
Q. what is a hydraulics system
A. a hydraulic system uses water in an enclosed space under pressure to move loads.
100
Q. What is A Rube Goldberg Machine.
A. A Complex Machine That Uses A LOT of Simple Machines To Do A Simple Task.
100
Q. What Is The Formula For A Mechanical Advantage.
A. Output Force (N)/Input Force (N).
200
Q. Before, machines were powered by humans and animals. What are they powered by now?
A. Electricity, Gas, Water, and Wind.
200
Q. Write what the purpose of the fulcrum is.
A. A fixed point where the lever rotates.
200
Q. What is an example of a hydraulic system in use.
A. A hydraulic lift is used to move a car above the ground, so a mechanic can work underneath it.
200
Q. what does this machine do for the man?
A. It Blows The Soup For The Man.
200
Q. What Is The Formula For A Speed Ratio.
A. Input Distance/Output Distance.
300
Q. How was the Persian wheel powered?
A. it was powered by animals e.x. Camels and donkeys
300
Q. What is a Complex Machine?
A. A Machine that consists of Several Simple Machines.
300
Q. what is pascal's law
A. Pascal discovered that pressure applied to an enclosed fluid is transmitted equally in all directions throughout the fluid
300
Q. Name The Two Types Of Energy.
A. Potential (Stored) Energy, and Kinetic Energy.
300
Q. What Is The Formula For Efficiency?
A. Efficiency=MA(Mechanical Advantage)/SR(Speed Ratio)X100%
400
Q.why was the archimedes screw better than the Persian wheel?
A. did it moved more volume of water and did it not use beasts of burdens?
400
Q. What are all the simple machines in a stapler?
A. A stapler has a lever - the handle, a wedge - the staples, a wheel and axle - the pivot point for the lever and an inclined plane - the slant for papers to slide up under the staple dispenser.
400
Q. how to calculate preassure
A. P=F/A
400
Q. Name Atleast Two Forms Of Energy.
A. Heat, Light, Motion, Electrical, Chemical, Nuclear…etc
400
Q. What Is Friction?
A. Friction Is A Force That Opposes Motion.
500
Q. Explain how trial and errors and scientific play a role in the develop of technology?
A. trial and error is the process of trying things until it succeeds and learning from your mistake.
500
Q. Define a System.
A system is a group of parts that work together to perform a function.
500
Q. what is a multiplying gear.
A. If the driver gear is larger than the follower gear, the turning speed of the system increases.
500
Q. What Is A Linkage.
A. A System With A Rope Or A Chain That Transfers Energy Between Gears, Ex. Bike.
500
Q. What Is The Formula For Work?
A. Work=Force X Distance.