☀️ Exam: Energy & Appropriate Technology

Week 9 / สัปดาห์ที่ 9 — พลังงานและเทคโนโลยีที่เหมาะสม

Q1. 'Solar' means energy from ___.

water wind the sun wood

Q2. 'Renewable' energy will ___.

run out soon not run out cost more each year only work at night

Q3. A 'digester' is a tank where ___.

food is cooked organic waste breaks down to make gas water is stored seeds are planted

Q4. 'Off-grid' means living ___.

in a city without connection to public utilities near a power plant with many appliances

Q5. Solar energy is ___ than grid electricity.

cheap cheaper cheapest more cheap

Q6. A rocket stove is more ___ than an open fire.

efficient efficienter efficientest efficiently

Q7. Which is correct?

Biogas is cleaner than wood. Biogas is more cleaner than wood. Biogas is cleanest than wood. Biogas is clean than wood.

Q8. Living off-grid is ___ than depending on power companies.

good better more good best

Q9. Thailand gets an average of ___ hours of strong sunshine daily.

1 3 5 10

Q10. A basic solar kit costs about ___.

200–500 baht 2,000–5,000 baht 200,000 baht 2 million baht

Q11. LED lights use ___ less energy than incandescent bulbs.

10% 50% 90% 100%

Q12. The first step in sustainable energy is to ___.

buy solar panels reduce your energy needs build a wind turbine buy a generator

Q13. A rocket stove uses ___ less wood than an open fire.

10–20% 30–40% 60–80% 99%

Q14. Biogas is made from ___.

rocks and sand animal manure and food scraps plastic waste coal

Q15. A household biogas digester produces ___ hours of cooking gas daily.

2–3 10–12 24 0.5

Q16. Methane in biogas is produced by ___.

burning wood solar panels bacteria decomposing organic waste mixing chemicals

Q17. Natural ventilation replaces ___.

cooking air conditioning lighting water heating

Q18. 'Reduce before you produce' means ___.

reduce farming lower energy needs before installing renewables reduce food production produce less food

Q19. Which combination saves the most energy?

LED lights + natural ventilation + efficient stove Air conditioning + incandescent bulbs Generator + open fire Grid electricity + electric heater

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