Shrinking plastic

The video tutorial demonstrates how a piece of plastic, originally a container, can be transformed by applying heat. Initially, the plastic is cut into a small square, and its original size is marked. When heat is applied, the plastic shrinks and becomes more rigid, similar to a craft product known as Shrinky Dinks. This process illustrates the concept of recycling by reusing plastic for a new purpose. The tutorial highlights the changes in the plastic's properties, such as increased rigidity and reduced size, emphasizing the memory of the plastic's original shape.

What allows the plastic to return to a shape similar to its original form when reheated?

• The plastic's color

• The plastic's molecular memory

• The plastic's thickness

• The plastic's weight

Why is it important to cut a piece of plastic separate from the main body for the shrinking demonstration?

• To make it easier to handle

• To avoid dealing with edges that inhibit shrinking

• To prevent it from melting

• To ensure it is the right size

What is the purpose of marking the original size of the plastic square?

• To ensure it is cut evenly

• To compare the size before and after shrinking

• To make it more visible

• To prevent it from curling

What happens to the plastic as it is gently warmed during the shrinking process?

• It becomes more flexible

• It becomes smaller and more rigid

• It changes color

• It melts completely

How is reusing plastic in this demonstration related to recycling?

• It changes the plastic's color

• It increases the plastic's weight

• It reduces the need for new plastic

• It makes the plastic more flexible