Challenge 1
A. Suppose your class decides to recycle cans for a recycling contest. You set a class goal of 50 cans each week. How much "gasoline energy" will your class save each week?
B. Recycling 50 cans each week would save enough energy to light a room with a 100-watt lightbulb for how many minutes? |
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Challenge 2
A. If you recycle one aluminum can each day for one year, you would save enough energy to light a room with a 100-watt light bulb for how many minutes?
B. Given the number of soda cans you and your family use each week, how many minutes could you light the lightbulb in one year if they were recycled? |
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Challenge 3
A. At the end of 6 weeks, the fourth grade class collected 3,200 cans for recycling. How many pounds of aluminum did they collect?
B. If recyclers pay $.25 per pound of aluminum, how much money can the class earn for 3,200 cans? |
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Challenge 4
A. If a car can go 30 miles on one gallon of gas, how far could it travel on the amount of gasoline saved by recycling 8 aluminum cans each month for one year?
B. How many miles could your family's car go on the number of aluminum cans you use each year? |
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