Physical Science and Technology

What is Science? Knowledge we gain from studying or world Physical –How things work Biological –Life

Why is technology important in agriculture mechanics? It allows you to solve problems you come across in an organized matter It gives you information to solve problems The basic rules and practices dont change in science; they just look different

How is Science and Mathematics used in Ag Mech? Used to understand how machines work and the power they give off Helps to solve problems that arise Used to improve our current machines and discover new ways of performing jobs

What are the divisions of mathematics and how are they used? Arithmetic –Simple add, subtract, multiply and divide –Solve simple problems Geometry –Angles, lines, points –Used in surveying land Algebra –Solve more complex problems Calculus –Used in designing new machines Trigonometry –Deals with triangles –Used in precision ag

What are the division of Physical Science? Chemistry Physics Earth Science

What is the difference between work and power? Work –Movement of mass over a distance –Energy put into doing a job Power –The speed at which work is done –How fast you can do a job

What is simple machine? A machine that only has one or two parts

What is a complex machine? The combination of more than one simple machine

What is mechanical advantage? The increase in force and work that can be accomplished with a machine

Simple Machines

Complex Machine