Author Question: The principal ingredient of glass is: A. resin. B. lead. C. kaolin. D. sand. E. ... (Read 18 times)

fnuegbu

  • Hero Member
  • *****
  • Posts: 539
The principal ingredient of glass is:
 
  A. resin.
  B. lead.
  C. kaolin.
  D. sand.
  E. cloisonn.

Question 2

The Tree of Jesse is a work from:
 
  A. the golden age of stained glass.
  B. the Pueblo people of San Ildefonso.
  C. the 15th century.
  D. the first wave of feminist art.
  E. American ex-slaves of the 19th century.



14vl19

  • Sr. Member
  • ****
  • Posts: 310
Answer to Question 1

D
Although there are numerous formulas for glass, its principal ingredient is usually silica or sand.

Answer to Question 2

A
The Tree of Jesse is an example of a special branch of glasswork, stained glass, a technique used for windows, particularly in the great cathedrals of the 12th and 13th centuries.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

For a complete list of videos, visit our video library