Reading 3

Who invented the radio?

• Marco Polo

• Guglielmo Marconi

• Marco de Cesaris

• Gustavo Perez Hernandez

When he created it?

• Seventeenth century

• Eighteenth century

• Nineteenth century

• Twentieth century

When you switch TV channels by remote control, you are using …………………..

• Radio waves

• Batteries

• Your finger

• Electric waves

What come after radios?

• Television

• Mobile phone

• Computer

• Laptop

How the first waves before turn into the radio waves called?

• Radio waves

• Carrier waves

• Micro waves

• Voice waves

The voice waves stronger by using …………….

• The aerials

• An amplifier

• Receiving aerial

• Speaker

Then it’s called …………

• Super waves

• Radio waves

• Carrier waves

• Electric waves

The ‘radio waves’ send out by ……………

• Large aerials

• Short aerials

• An amplifier

• Receiving aerials

The ‘radio waves’ pick up by ……………

• An amplifier

• Large aerials

• Receiving aerials

• Short aerials

What process done before sent out to speakers and headphones?

• Pass through an amplifier

• Pass through large aerials

• Reverse process

• Pass process