Page 226 - Science Course 3 (Book 1)

Types of Materials Mo6-L2a: What is Glass and Its Uses?
Lesson 2

translucent

allowing light to pass through but not the clear de-
In this topic, you will learn the following tails of objects behind.
lessons:
(also known as semi-transparent)
Mo.6–L2a: What is Glass and Its Uses?
Mo.6–L2b: What are Ceramics and Plastics?
Mo.6–L2c: What are Fibers and Their Uses?

Mo6-L2a What is Glass and Its Uses?

KEY CONCEPTS:
1. What is glass?
2. What are the uses of glass? Let’s Begin

Vocabulary A-Z Glass and Its Uses

Let us learn some vocabulary Glass is a sold material that is hard and brittle
(breaks easily when bent).
glass It is made by fusing sand with soda, lime, and

a solid material that is usually transparent or sometimes other ingredients and cooling rapidly.
translucent as well as hard and brittle (unbending
and breaks easily). It is used to make windows, drinking containers, and
other articles.

transparent Transparent glass allows light to pass through so
that objects behind can be easily seen.
allowing light to pass through so that objects behind
can be easily seen. Translucent glass (or semi-transparent) allows light
to pass through but objects behind can’t be easily
seen.

Translucent glass is sometimes called frosted glass.

Translucent Transparent
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