Egypt's market in green at end of trading week

The video tutorial provides a brief introduction to a CD player and the basic concept of machines. It covers the fundamental aspects of these topics in a concise manner.

What is a primary function of a CD player?

• To play compact discs

• To record audio tapes

• To stream online music

• To play vinyl records

What type of media does a CD player primarily use?

• Vinyl records

• Compact discs

• Digital files

• Cassette tapes

Which of the following is NOT a characteristic of a machine?

• Can be mechanical

• Performs tasks automatically

• Requires human intervention for every step

• Can be powered by electricity

Which of the following is an example of a machine?

• A bicycle

• A tree

• A painting

• A book

What is a common power source for machines?

• Water

• Wind

• Sunlight

• Electricity