What are the lines on a weather map connecting places of equal air pressure called?

Answer

The lines on a weather map that connect places of equal air pressure are called isobars. Bar is a unit of pressure and ISO is a prefix for equal or same. That is how the name is derived.
Q&A Related to "What are the lines on a weather map connecting..."
On a weather map, the lines that connect points with. equal barometric pressure. are called. Isobars. The lines that connect points with. equal temperature. are called. Isotherms.
http://wiki.answers.com/Q/What_are_the_lines_in_a_...
The word "isobar" comes from the prefix "iso- which is Greek for "equal, and the word "baros, which is Greek for "weight. Isobars are lines of equal
http://www.ehow.com/info_8608365_lines-connect-poi...
Isobar. It is a Greek word, not a Latin one. "iso- is Greek for "equal" The Latin equivalent is "equi- "baros" is Greek for "weight, heavy"
http://answers.yahoo.com/question/index?qid=201303...
"Isobar" "iso" is the prefix meaning "equal" and "bar"
http://www.chacha.com/question/what-is-the-map-lin...
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