Page 1 - L-19 HA2

SAI International School
Std- 4
Social Science
Lesson -19 Transport and Communication

Objective Questions:

A. Choose the correct option:

1. Fax machine is connected to a ______________.
a) Telephone

b) Mobile
c) Scan machine

2. First radio set was invented by ____________________.
a) Thomas Alva Edison

b) Marconi
c) Albert Einstein

3. We can view live programmes through _____________.
a) Newspaper

b) Magazine
c) Television

4. __________________ receive and relay audio video signals.
a) Fax
b) E-mail

c) Artificial satellite

Subjective Questions:

A. Observe the picture and answer:

1. Name the object shown in the picture.
2. How is it used to send messages?