Module 13 - Answers.

1. Yo-yo's have been used as a toy for over 2,500 years. Which language does the word yo-yo come from and what does it mean?
   
   It comes from Tagalog language (the language of the Philippines), meaning "to come back."
   
   We got the answer from: ( http://www.enchantedlearning.com/inventors/indexy.shtml )

A yo-yo:

2. What are mobiles?

A mobile is a hanging artwork.
Mobiles are popular kindergarten crafts. These craft projects are for preschool, kindergarten and elementary school children. The crafts use materials found around the house, like egg cartons, cardboard, paper, boxes, string, crayons, paint, glue, etc.

A mobile is also a portable communication device (= a mobile phone).

We got the answers from: ( http://www.enchantedlearning.com/crafts/mobiles/index.shtml )
(http://en.wikipedia.org/wiki/Mobile)

3. When was the can opener invented?

A metal can (or canister) for preserving food was invented in 1810 by a Peter Durand, of London, England.
The can opener was invented in 1858 by Ezra Warner of Waterbury, Connecticut, USA. Warner's device used a lever and chisel. Until then, cans were opened using a hammer and chisel; the can opener was invented 48 years after the metal can was invented.

We got the answer from: (http://www.enchantedlearning.com/inventors/1800a.shtml)

4. What was invented by GM engineers Clyde Coleman and Charles Kettering?

They invented the first electrical starter motor ignition system.

We got the answer from: (http://inventors.about.com/library/inventors/blignition.htm )

5. Who invented hovercrafts?

The hovercraft was invented by Christopher Cockerell in 1956.

We got the answer from: (http://inventors.about.com/library/inventors/blhovercraft.htm )

The multifunctional hovercraft: