SCIENCE

• Pulley comes from what Greek term?

  Polos
• A fixed pulley is a type of pulley which stays in one position as the wheel spins, and is fastened by using a hook to one spot.
• A movable pulley is attached to the object being moved with the force, and is a pulley with a free axle.
• What part of a wheel enables it to work?

  Axle
• A wedge is used to split, to pierce or cut.
• Used to hold 2 wooden pieces together?

  Screw
• Are used as fasteners to hold things?

  Screws
• A wedge is a simple machine made of one or two inclined planes.
• Ramps are used to lift or raise cargoes from the pier to the ship.
• When a lever slants or is raised at one end, it becomes what?

  Inclined Plane
• A lever is a bar which turns at a fixed point called what?

  fulcrum
• Is the opposing force to the effort?

  Resistance
• the other end in which you apply force in a lever?

  effort
• A 1st class lever has the effort force at one end, the load at the other end, and the fulcrum in the middle.
• A 2nd class lever has the effort force at one end, the load in the middle, and the fulcrum in the other end.
• A 2nd class lever has the effort force at the middle, the load in the at one end, and the fulcrum in the other side.
• Is a board or any flat surface, and can be made of one or more bars resting on a support called fulcrum?

  Lever
• A possible gain force is called?

  Mechanical advantage of force.
• Helps move the resistance faster than the applied force?

  Mechanical Advantage of Speed.
• Is any tool which by applying force makes work easier and faster?

  Machine
• A machine made out of 1 or 2 parts?

  Simple Machine
• What word means '' using force to move an object in a certain direction?

  Work