click below
click below
Normal Size Small Size show me how
7th grade Wrk & Mach
Fletcher 7th grade Work and Machines Review
Term | Definition |
---|---|
Gravity | A force exerted by all matter |
Joule | The unit for measuring work and equal to 1 Nm |
Geotropism | Growth in response to Earth's gravity |
Screw | An inclined plane wrapped around a central bar |
Mechanical Advantage | When effort force is multiplied (increased) by using a machine |
Pulley | A rope belt or chain wrapped around a grooved wheel |
Heat | A form of energy created by heat |
Inertia | A property of matter that tends to resist changing motion |
Equilibrium | When all the forces acting on an object are in balance |
Turgor Pressure | A force that causes plants to stand up straight |
Newton | The unit for measuring Force and equal to 1Kg m/sec/sec |
Phototropism | Growth in response to light |
Negative Geotropism | Growth in a direction opposite to the pull of gravity |
Distance | Work = Force x ________ |
Acceleration | A change in motion |
Inclined plane | Scientific name for a ramp |
Fulcrum | The pivot point of a lever |
Friction | A force that opposes motion |
Pitch | The distance between two threads on a screw |
Wedge | A double inclined plane |