Warm Up #1 What are simple machines? Ch. 12 Energy, Work, and Simple Machines LESSON 3: MACHINES Essential Questions
What are simple machines? In what ways can machines make work easier? Simple Machines
Machines transfer mechanical energy from one object to another Simple machines machines that do work using one movement Dont change the amount of work required Do change the way work is done Inclined plane a flat, sloped surface Ex: ramp
Brainpop Inclined planes Screw an inclined plane wrapped around a cylinder Ex: screw-top bottle (soda bottle) Wedge an inclined plane that moves
Ex: pizza cutter, knives Lever a simple machine that pivots around a fixed point Ex: tab of a can, scissors Brainpop - Levers
Wheel and Axle a shaft attached to a wheel of a larger diameter so that both rotate together Ex: doorknob, cars steering wheel Brainpop Wheel and Axle Pulley a grooved wheel with a rope or cable wrapped around it Ex: flagpole
Brainpop - Pulley Complex Machines 2 or more simple machines working together Machines and Work Work you do on a machine is input work Ex: window washer pulling rope
Work the machine does on an object is output work Ex: distance he moves Efficiency the ratio of output work to input work
Efficiency is never 100% as some work is transformed into wasted thermal energy due to friction To improve efficiency, reduce friction between moving parts
Kwanzaa Mr. Clutter Librarian What is Kwanzaa? Kwanzaa is a unique African American celebration with focus on the traditional African values of family, community responsibility, commerce and self improvement. It is simply a time of reaffirming African- American people, their...
Ann Scholz (NH), Neil Mastin (NC), Dave Huft (SD), Rhonda Brooks (WA) and Bill Stone (MO) Selected. Draft Report discussed with Consultant on June 26, 2018. Any Photos You Would Like to Share? 2018-2019 Goals & Activities. HVR Website enhancements....
7A Cells Contents What are cells? Animal and plant cells Where do cells come from? Summary activities Cells to organisms Animal and plant cells all have three basic parts What is a cell? Plant cell plant cell animal cell cytoplasm...
Draw Lewis Dot Diagrams to represent the number of valence electrons an atom has. Write the chemical formula for ionic compounds using the criss-cross method and the Lewis Dot method **Show all work for all problems! ... an ionic bond...
Shared vision and values. Your vision & values are clear and coherent. Shared across the group. Reflected in other elements . e.g. financial plan. Documented so you can share it with others (starting point for your business case).
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