📙 Advanced (960~1050) | Why Is It Dangerous When Electricity Meets Water?

전기와 물이 만나면 왜 위험할까?

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✔ 학습 목표

 - 전기와 물이 섞이면 위험한 이유를 과학적으로 이해해요.
 - 안전 사고에 관한 정보를 영어로 읽고 설명할 수 있어요.
 - 원인-결과 구조와 기술 설명문 독해 연습을 해요.

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🔹 Reading Passage

 Electricity and water are two things that should never mix. While electricity itself is invisible, its effects can be extremely dangerous, especially when it flows through materials that conduct it well. Water, especially when it contains minerals or salt, is a strong conductor of electricity.

 When electrical current touches water, the energy can spread quickly and unexpectedly. This can cause serious electrical shocks, burns, or even cardiac arrest if the current passes through a human body. Sometimes people don’t notice the danger—water looks harmless, but it can hide exposed wires or a live power source.

 Places like bathrooms, kitchens, and swimming pools require special safety measures. Even household appliances near wet areas can become deadly if used carelessly. That’s why many buildings install GFCIs—Ground Fault Circuit Interrupters—which automatically shut off power when electrical flow becomes unstable due to moisture.

 By understanding how electricity behaves in the presence of water, we can take the right steps to prevent accidents. Being cautious, following safety rules, and using the right devices can save lives.

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🔹 Reading Comprehension Questions

Q1. What is the main danger when electricity meets water?
A. Water becomes hotter
B. Water blocks the current
C. Electricity spreads through water and causes harm
D. Water glows in the dark

Q2. Why are bathrooms considered dangerous for electricity use?
A. Because people take showers
B. Because they are often dark
C. Because water is always moving
D. Because water can touch electrical devices

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🔹 Vocabulary Quiz

Q3. What is the meaning of “conductor” in the passage?
A. A person who manages electric trains
B. A material that blocks electricity
C. A substance that allows electricity to flow
D. A signal that controls machines

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🔹 Grammar Quiz

Q4. Choose the correct sentence:
A. Water and electricity causes big danger.
B. GFCIs shuts down when it rains.
C. Electricity move very fast through water.
D. GFCIs help prevent accidents in wet places.

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🔹 어휘 정리표

English Expression	English Definition	Korean Meaning
electricity	Energy that can power machines or lights	전기
conductor	A material that lets electricity flow through it	전도체
electrical shock	Sudden pain from electricity passing through the body	감전
cardiac arrest	When the heart suddenly stops beating	심정지
appliance	A device used at home, like a toaster or microwave	가전제품
power source	A place where electricity comes from	전원
exposed wire	A wire without protective cover	노출된 전선
GFCI	A safety device that cuts power if electricity is unstable	누전 차단기
moisture	Small amounts of water or dampness	습기, 수분
prevent	To stop something from happening	막다, 예방하다

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✔ 정답 및 해설

Q1: C – Electricity spreads easily through water, leading to serious harm.
Q2: D – Wet places like bathrooms are dangerous because water may contact devices.
Q3: C – A conductor is a material that allows electricity to pass through.
Q4: D – GFCIs is plural → correct verb is ‘help’. The sentence is complete and clear.

🔻 A: 복수 주어 ‘water and electricity’ → ’cause’가 맞음
🔻 B: ‘GFCIs’는 복수 → ‘shut down’이 맞음
🔻 C: ‘Electricity’는 단수 → ‘moves’가 맞음

✅ Extra Grammar Note:
Plural subjects (like “GFCIs”) use base verb forms like “help,”
while singular nouns (like “Electricity”) need verbs with -s such as “moves.”

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💡 전기처럼 보이지 않는 위험도 있어요.
 보이지 않아도, 준비된 사람은 사고를 막을 수 있어요.

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