4 - Conservation & Efficiency
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Practice Questions
Test your understanding with targeted questions
What does LED stand for?
💡 Hint: Think about the type of light technology used in modern bulbs.
Name one benefit of electric vehicles.
💡 Hint: Consider what power source EVs use.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What percentage less energy do LED bulbs use compared to incandescent bulbs?
💡 Hint: Remember the comparison made between the two types of bulbs.
True or False: Electric vehicles run completely on fossil fuels.
💡 Hint: Consider the primary power source of these vehicles.
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Challenge Problems
Push your limits with advanced challenges
A family switches from incandescent bulbs to LED bulbs in their home. If they had 10 bulbs, each consuming 60 watts, calculate the total energy saved per month (30 days) if they use the lights for 5 hours a day. Assume an LED uses 9 watts.
💡 Hint: First, find the monthly energy consumed for both types of bulbs.
Discuss how implementing electric vehicles in a city can affect its overall energy consumption and pollution levels. What measures can be taken to promote their adoption?
💡 Hint: Consider both environmental and economic factors.
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Reference links
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