Drawings & Plastics(Sept.28)

Question 1

Detail drawing
(definition)

Answer 1

Is an engineering drawing that specifies all the details necessary to make a particular part of an object(uses multiview projection)

Question 2

Exploded view drawing

Answer 2

Is an engineering drawing that shows the different parts, or features, of the object separetely. It often includes a bill of materials(name of each piece). It uses the isometric projection.

Question 3

General drawing

Answer 3

A drawing that shows the overall appearance of an object. It uses multiview and isometric view.

Question 4

What is plastic made of?

Answer 4

Its made of molecules called polymers. Polymers are made of monomers

Question 5

True or false?

Most plastics come from petroleum or natural gas

Answer 5

True.

Question 6

The 2 categories or plastics are:

Answer 6

Thermosetting plastics and thermoplastics

Question 7

Explain thermosetting plastics.

Answer 7

This plastic harden permanently under the effect of

an energy source such as heat, irradiation or a chemical reaction

Question 8

Explain thermoplastics.

Answer 8

Thermoplastics soften when heated and harden when cooled. Thermoplastics can be reshaped when softened, maintaining their new shape when cooled.