Joint Scavenger Hunt
By: Jay Dempsey Period: 5
Ball-and-Socket Joints
Drone Remote Controller
This stick of the controller can move in all directions, but is held in place by a socket, making it a good example of a ball-and-socket joint.
Shower Head
This shower head is held into place by a socket, that allows the head to move all around. This could be considered a ball-and-socket joint.
Side View Mirrors
The side view mirrors of a car have to be able to move all around so the driver can see in any position. This mirror is held into place by a socket, but can move freely, making it a ball-and-socket joint.
Hinge Joints
Switch Blade
The knife of this blade fold into the knife and comes out when ready, it is restricted by the amount of movement, and can only move in two directions, similar to a hinge joint.
Door
A door's primary function is to open and close, moving in only two directions. It does this by resting on the hinges of the door, making it a hinge joint.
Water Bottle Top
This water bottle top opens and close shut on the bottle, and only moves two directions, held on by a joint, called a hinge joint.
Pivot Joints
Sink Handle
This sink handle has to be able to rotate forward and backward, but still stay connected at the base. This is an example of a pivot joint.
Swivel Chair
A swivel chair can spin all around on its support pole, while the base of the chair is not moving. It does this with a joint called a pivot joint.
Wheel
A wheel on any vehicle has to be able to rotate, but still has to be able to stay attached through the middle, making it a pivot joint.
Gliding Joints
Drawer
A perfect example of a gliding joint is a drawer, which has to be able to slide in and out of a cabinet, limited by only going two directions, in and out.
Printer Paper Tray
This printed stores its paper in a tray, which has to be able to slide in and out of the printer with ease. It does this with a hinge joint called a sliding joint.
Storage Cubby
A storage cubby slides in and out of the cabinet, storing many things in it. It slide similar to a sliding joint would in the human body.