i fail this challenge !!! *sob*
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NASA's Answer Key & Explanation ( the correct answer )
This is how NASA would have prioritized these items, going from top to bottom (most important to least important).
Item
NASA's Reasoning
2 50-kg tanks of oxygen
Most pressing survival need (weight is not a factor since gravity is one-sixth of the Earth's -- each tank would weigh only about 17 lbs. on the moon)
20 liters of water
Needed for replacement of tremendous liquid loss on the light side
1 star chart
Primary means of navigation - star patterns appear essentially identical on the moon as on Earth
4 packages of food concentrate
Efficient means of supplying energy requirements
1 solar-powered radio set
For communication with mother ship (but FM requires line-of-sight transmission and can only be used over short ranges)
20m nylon rope
Useful in scaling cliffs and tying injured together
1 first-aid kit
Treat injury or sickness. Needles connected to vials of vitamins, medicines, etc. will fit special aperture in NASA space suit
1 large piece of insulating fabric
Shelter from the sun
3 signal flares
Use as distress signal when the mother ship is sighted
2 45-caliber pistols, loaded
Possible means of self-propulsion
1 case of dehydrated milk
Bulkier duplication of food concentrate
1 portable heating unit
Not needed unless on the dark side
1 flashlight
Not needed unless on the dark side
1 magnetic compass
The magnetic field on the moon is not polarized, so it's worthless for navigation
1 box of matches
Virtually worthless -- there's no oxygen on the moon to sustain combustion
This is how NASA would have prioritized these items, going from top to bottom (most important to least important).
Item
NASA's Reasoning
2 50-kg tanks of oxygen
Most pressing survival need (weight is not a factor since gravity is one-sixth of the Earth's -- each tank would weigh only about 17 lbs. on the moon)
20 liters of water
Needed for replacement of tremendous liquid loss on the light side
1 star chart
Primary means of navigation - star patterns appear essentially identical on the moon as on Earth
4 packages of food concentrate
Efficient means of supplying energy requirements
1 solar-powered radio set
For communication with mother ship (but FM requires line-of-sight transmission and can only be used over short ranges)
20m nylon rope
Useful in scaling cliffs and tying injured together
1 first-aid kit
Treat injury or sickness. Needles connected to vials of vitamins, medicines, etc. will fit special aperture in NASA space suit
1 large piece of insulating fabric
Shelter from the sun
3 signal flares
Use as distress signal when the mother ship is sighted
2 45-caliber pistols, loaded
Possible means of self-propulsion
1 case of dehydrated milk
Bulkier duplication of food concentrate
1 portable heating unit
Not needed unless on the dark side
1 flashlight
Not needed unless on the dark side
1 magnetic compass
The magnetic field on the moon is not polarized, so it's worthless for navigation
1 box of matches
Virtually worthless -- there's no oxygen on the moon to sustain combustion
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