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Reading Checks (Page 328)
Which type of fluid is used in hydraulics?
Oil or water.
How do hydraulic systems allow you to perform a task at a distance?
They create pressure that moves through a liquid and the force can perform a task in another location.
Why might a pump be needed in a hydraulic system?
It could pump air and the pressure would be able to lift the object.
How are valves used in hydraulic systems?
They control the flow of the fluids in the hydraulic systems.