20th Century Inventions - Unit 2.

3. card a small plastic card that can be used as a method of payment, the money being taken from you at a later time.
5. machine a machine for washing clothes, sheets, and other things made of cloth.
8. phone a phone that is connected to the phone system by radio instead of by a wire, and can be used anywhere where its signals can be received.
10. a piece of kitchen equipment that uses electricity to preserve food at a cold temperature.

1. a device shaped like a box with a screen that receives electrical signals and changes them into moving images and sound, or the method or business of sending images and sound by electrical signals.
2. a medicine or chemical that can destroy harmful bacteria in the body or limit their growth.
4. a device sent up into space to travel around the earth, used for collecting information or communicating by radio, television, etc.
6. a set of pages of information on the internet about a particular subject, published by a single person or organization.
7. a system that uses radio waves to find the position of objects that cannot be seen.
9. engine a very powerful engine. When fuel is burned inside the engine, hot air and gases are produced and then pushed out of the back of the engine at high speed, forcing the engine forward.