Simple Machinss

• A lever is a bar which turns at a fixed point.
• The part of the lever in which it turns at?

  Fulcrum
• Is the point of the lever in which you put books?

  Load/Resistance
• Is the applied force in a lever?

  Effort
• It is a lever with the fulcrum in the middle, and the effort force and load on the sides

  First Class lever
• A lever that has the fulcrum and effort sides on both sides, and the load in the middle.

  Secons Class Lever
• A type of lever in which that has the fulcrum and load at both sides, and the effort

  Third Class Lever
• Is a machine made out of one or two parts?

  Simple Machine
• Is any tool or device in which by applying force makes work easier and faster.

  Machine
• The possible gain in force from machines is called?

  Mechanical Advantage of Force
• The possible gain of the resistance, compared to the applied force is called?

  Mechanical Advantage of Speed
• Is a machine made out of 1-2 inclined planes.

  Wedge
• Is a inclined plane wrapped in a spiral, a cylinder, or round object.

  Screw
• The ridges around the a screw are called?

  Grooves or threads
• Are used as fasteners to hold things together.

  Screws
• Consist of a wheel and rod joined at the center of the wheel.


  Wheel and axle.
• Has teeth and notches around their rims, which can change speed or direction.

  Gears
• The word pulley comes from the word?

  Axle
• The Greek word " polos " means?

  Axle
• Is a type of pulley which stays in one direction as the wheel spins.

  Fixed pulley
• Is a type of lever which is attached to the object bei g moved.

  Movable pulley.
• Several pulleys can be used together with the usage of?

  Block and tackle.
• Are machines that use pulleys to move people up and down.

  Elevators and escalators.
• Means, using force to move an object at a certain distance. 

  Work
• Is a device which helps people do work.

  Machine
• Is a machine that at least has one simple  machine among its  parts.

  Compound machine
• Refers to ridges around a screw.

  Grooves/Threads
• Refers to the teeth and notches of a wheel.

  Gears
• Refers to the bending of rock layers due to strong pressure.

  Folding
• The raised part of a fold is called?

  Anticline
• The lowered sections of a fold are called?

  Syncline
• Is the formation of a crack or joint which may break.

  Faulting
• Is the rising of Earth's crust.

  Uplift
• Is the sinking of the Earth's crust.

  Subsidence
• Refers to the sideways movement of the crust.


  Thrust
• What separates the crust from the mantle?

  Mohorovicic Discontinuity/Moho
• Is derived from aluminum and silicon?


  Sial
• Is derived from silicon and magnesium?


  Sima
• Is a region which exhibits a plastic like behaviour, which let's the solid lithosphere float on top of it.

  Asthenosphere.