Chapter 8 Work and Machines Work Simple Machines
- Slides: 22
Chapter 8 Work and Machines
Work Simple Machines Power Simple Machines 100 100 200 200 300 300 400 400 500 500
Work Input What is the work that you do on a machine called? Row 1, Col 1
Fulcrum What is the fixed point on a lever? 1, 2
Power What is the rate at which work is done or energy is transformed? 1, 3
Lever What is a simple machine that uses a bar that pivots on a fixed point? 1, 4
Work Output What is the work done by a machine on an object called? 2, 1
Wheel and Axle- it increases force by allowing you to apply less force over a greater distance. What is a simple machine consisting of two circular objects of different sizes? How does this machine make work easier? 2, 2
Watt What is the Si unit used to express power? 2, 3
Fulcrum, Input Force, and Output Force (Load) What are three parts of a lever? 2, 4
Joule What is the SI unit for work? 3, 1
Pulley What is a simple machine with a grooved wheel that holds a cable? 3, 2
Work divided by Time What is the formula used to calculate power? 3, 3
Wedge – it increases force by allowing you to apply less force over a greater distance. What is a simple machine that consists of two inclined planes that moves? What is the advantage of this machine? 3, 4
Mechanical Efficiency What is the comparison of a machine’s work output with work input? 4, 1
Screw A bottle top is an example of which simple machine? 4, 2
Friction What prevents machines from being 100% efficient? 4, 3
Inclined Plane – it increases force by allowing you to apply less force over a greater distance What is a straight slanted surface called? How does it make work easier? 4, 4
Work What is the transfer of energy using a force that causes an object to move in the direction of the force? 5, 1
Machine A device that makes work easier by changing the size or direction of force is called what? 5, 2
Compound Machine What is two or more simple machines combined called? 5, 3
Fixed, Moveable, and Block and Tackle What are three types of pulleys? 5, 4