# Earth Day Word Problems (Grade 6)

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## Earth Day Word Problems

1.

A brand of compact fluorescent light bulbs advertises that each of its bulbs last 10,000 hours. A brand of incandescent light bulb states that each of its bulbs last 1,000 hours. Which ratio correctly compares the lifespan of incandescent bulbs to compact fluorescent bulbs?

- 1:9
- 9:1
- 1:10
- 10:1

2.

Sergio's home solar panels decrease the amount of carbon dioxide released into the atmosphere by 35,000 pounds per year. Which expression shows the number of pounds of carbon dioxide Sergio's solar panels save being released over 10 years?

- [math]35,000 xx 10[/math]
- [math]35,000-:10[/math]
- [math]35,000 + 10[/math]
- [math]35,000 - 10[/math]

3.

A school's wind turbine generates 2,000 kilowatt-hours of energy in a day. Which of the following shows how many watt-hours this value equals?

- 200 watt-hours
- 20,000 watt-hours
- 200,000 watt-hours
- 2,000,000 watt-hours

4.

The United States generated about 67% of its energy from fossil fuels in 2013. Which fraction shows the amount of energy generated in the United States in 2013 by other energy sources?

- [math]67/33[/math]
- [math]33/67[/math]
- [math]33/100[/math]
- [math]67/100[/math]

5.

It is estimated that Americans use 4,000,000 plastic bottles an hour and that 1 out of 4 of these bottles is recycled. Based on these numbers, how many plastic bottles are NOT recycled by American's each hour?

- 1,000,000
- 2,000,000
- 3,000,000
- 5,000,000

6.

Devon's hybrid car averages 50 miles per gallon for gas mileage. Avery's pickup truck averages 20 miles per gallon for gas mileage. Devon and Avery each drive their vehicles 500 miles. If gas costs $2.50 per gallon, how much more money does Avery pay for gas than Devon for that driving distance?

- $25.00
- $37.50
- $62.50
- $87.50

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