Notes

32 pages
illustrations (chiefly colour), map, facsimile.
Word count: 2455 ; Text type: information report (informative), explanation (informative)
Summary: Maps convey information about the world. Modern technologies have changed how people create maps and the ways they access them. Looking at old maps can show how differently the world was understood in the past. Mapping the sea floor is very difficult, because humans can only stay underwater for short periods of time. While all of the land on Earth has been mapped, parts of the sea floor are still to be explored. (Back cover)
PM guided reading.
Level 29.
PM library.
Sapphire level.