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5thSciencechp7

Chapter 7 Force and Work 5th grade

QuestionAnswer
How do you calculate slope? rise divided by run
What must increase in order to do more work? mass or acceleration
What are used to measure work? joules
What are used to measure force? newtons
What is the pivoting point in a lever called? fulcrum
The combination of an object's speed and direction is called what? velocity
How do you calculate speed? distance divided by time
What will an unbalanced force cause an object in motion to do? change direction
What will an unbalanced force cause an object at rest to do? move
As a greater force is applied to an object, waht happens to the acceration? it increases
What is in the middle of a third class lever? effort
Waht is in the middle of a first class lever? fulcrum
What is in the middle of a second class lever? load
Examples of inclined plances include ramps, stairs, windowshield
examples of wedges include ax, saw teeth, doorstoop
examples of levers include see saw, crowbar, shovel
examples of pulleys would include flagpole, blinds
examples of screws would include twist off top, nuts and bolts
the ability to do work energy
the steepness of a slope grade
slanted surface inclined plane
a beam or bar that rotates or pinwheels around a fulcrum lever
the rate of change in velocity over a period of time acceleration
a measure of how fast an object changes position speed
the force applied to a machine effort
the result of a force applied to an object causing it to move work
a device used to make work easier simple machine
the force moved by a machine when effort is applied load
Created by: bartlett
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