-- card: 41684 from stack: in.11
-- bmap block id: 0
-- flags: 0000
-- background id: 5746
-- name: 


-- part 1 (button)
-- low flags: 00
-- high flags: 0000
-- rect: left=444 top=22 right=57 bottom=475
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
  visual effect wipe right
  go to next card
end mouseUp



-- part 2 (button)
-- low flags: 00
-- high flags: 0000
-- rect: left=411 top=21 right=59 bottom=443
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
  visual effect wipe left
  go to previous card
end mouseUp



-- part 3 (button)
-- low flags: 00
-- high flags: A003
-- rect: left=362 top=30 right=48 bottom=407
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Print
----- HyperTalk script -----
on mouseUp
  doMenu "Print Card"
end mouseUp



-- part contents for background part 1
----- text -----
Greenhouse Gases Cause Warming

-- part contents for background part 2
----- text -----
2. The Greenhouse on Mars and Venus

-- part contents for background part 6
----- text -----
  Mars orbits farther from the sun than does Earth, and therefore receives smaller doses of solar radiant energy than our planet.  As a result, Mars is colder than Earth.  But Mars is much colder, because it contains a very thin atmosphere of low-concentration greenhouse gases.  Mars's atmospheric pressure (and hence gas concentration) is less than 1% of Earth's, and is mostly CO2.  Most ice on Mars is 'dry ice' or frozen carbon dioxide.  Because greenhouse gas molecules are in short supply on Mars, the planet's arctic regions are very cold - about minus180 degrees F (-120 deg.C). 
  Venus, orbiting between Earth and Mercury, receives more solar radiation than Earth.  However, the primary reason Venus is such a hot planet - about 900 degrees F - is the greenhouse effect.  Atmospheric pressures and gas concentrations on Venus are 90 to 100 times greater than on our home planet - trapping much more heat than the earth does.  The 'air' on Venus consists of mostly CO2, with layers of thick 'clouds' made up of sulfuric acid. ***