Earth Hour: Let's Talk About Climate Change

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Earth Hour: Lets Talk About Climate Change
Put down the tablet, turn off the lights and start a conversation about climate change on March 25 from 8:30 p.m. to 9:30 p.m. 
 
According to Environment and Climate Change Canada, climate change “is one of the greatest challenges of our time,” and is making an impact on a rising global temperature, wide spread melting of arctic sea ice, changing precipitation patterns, and changes in frequency and intensity of extreme weather events. 
 
During Earth Hour, an international initiative spearheaded by the World Wildlife Fund (WWF), people worldwide are encouraged to unplug and turn off their lights for one hour on Saturday to “shine a light” on climate change and bring conversation about this growing issue to the forefront. 
 
“The world is at a climate crossroads,” reads the WWF’s report on the 2016 Earth Hour. “Our actions today will define what tomorrow will look like for generations to come and every one of us - individuals, organizations, companies and governments must be a part of the climate action our planet urgently needs.” 

While doing your part to start the climate change conversation during Earth Hour, why not light some candles and stretch your mind with some math problems?

Before you put your electronics away and turn off the lights for an hour on Saturday, be sure to print out these Earth Hour-themed problems!  We’ll post the answers on our social media platforms following Earth Hour! 

If the earth rotates at a rate of 27.8 km per minute, how many hours does it take the earth to rotate 40 000 km?

 

Answer: about 24 hours

 

About 5/7 of the earth’s surface is covered with water. About 88 957 440 km² is land. In km², about how much of the earth’s surface is covered with water?

Answer: 222 393 600 km²

 

A standard 100 watt lightbulb consumes one kilowatt-hour of energy every 10 hours. If your home has a total of 16 lightbulbs and you turn them all off from 8:30 p.m. to 9:30 p.m. during Earth Hour, how much energy will you save?

 

Answer: You will save 1.6 kilowatt-hours of energy during Earth Hour

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