📙 Advanced (960~1050) | Why Is Snow So Light?눈은 왜 이렇게 가벼울까?

✔ 학습 목표
눈이 가벼운 이유를 구조적 특징과 공기의 함유량, 온도와의 관계를 통해 이해한다. 동시에, 문장 속 -ing 형태의 문법적 용법(동명사 vs 현재분사)을 구별할 수 있다.

🔹 Reading Passage
When snow falls, it appears to drift softly through the air. This gentle motion is due to the unique structure of snowflakes, which are composed of numerous tiny ice crystals. These crystals have intricate shapes and are loosely arranged, creating many gaps that trap air and lower their overall density.

One primary reason snow feels so light is its high air content. Freshly fallen snow can consist of up to 90% air, with the remaining portion made of frozen water in fragile, lattice-like forms. Because air is far less dense than water, the snow feels light both as it lands and when we touch it.

Temperature also influences how snow behaves. In extremely cold conditions, snowflakes become drier and more powdery. As a result, they don’t easily clump together, making the snow even lighter and more prone to being carried away by the wind.

🔹 Reading Comprehension Question 1
Why is freshly fallen snow so light?
A. Because it is mostly frozen water.
B. Because it is made of heavy crystal layers.
C. Because it contains a large amount of air.
D. Because it melts quickly in cold weather.

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🔹 Reading Comprehension Question 2
What effect does very cold weather have on snowflakes?
A. It makes them melt faster.
B. It turns them into water vapor.
C. It makes them drier and more powdery.
D. It increases their density and weight.

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🔹 Vocabulary Quiz
Which word describes a material with a repeated, organized pattern?
A. vapor
B. density
C. crystal
D. clump

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🔹 Grammar Quiz

문제 1. Which sentence is grammatically correct?
A. Snow are mostly air.
B. Snow feels light because it contains air.
C. Snowflakes floats in the warm air.
D. The snow fall in large pieces.

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문제 2. 다음 중 밑줄 친 ‘falling’이 동명사로 쓰인 문장은?
A. The falling snow looked beautiful.
B. He watched the falling leaves.
C. Falling quickly can cause injuries.
D. The child smiled at the falling feather.

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문제 3. 다음 중 밑줄 친 ing 형태의 문법적 용법이 나머지와 다른 하나는?
A. The singing girl amazed everyone with her voice.
B. He avoided speaking in public whenever possible.
C. We saw a cat sleeping under the table.
D. The news was shocking to many people.
E. She was writing a letter when I entered.

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🔤 어휘 정리표 (TOP10)

영어 단어	영어 뜻	한글 뜻	예문
crystal	a solid with a regular pattern	결정, 수정	Snowflakes are made of ice crystals.
density	mass per unit of volume	밀도	Air reduces the density of snow.
intricate	very detailed and complex	복잡하고 정교한	Crystals have intricate shapes.
lattice	a structure of crossed lines	격자 구조	Snow has a lattice-like structure.
fragile	easily broken or damaged	깨지기 쉬운	Ice structures are fragile.
powdery	soft and like powder	가루 같은	Cold snow becomes powdery.
prone	likely to experience	~하기 쉬운	Light snow is prone to blowing away.
clump	to form into a group	뭉치다, 덩어리	Wet snow tends to clump together.
drift	to move slowly through air or water	천천히 떠다니다	Snowflakes drift through the air.

✔ 정답 및 해설

• Q1 정답: C – 눈 속 공기의 비율이 높아 가볍다.
• Q2 정답: C – 매우 추운 날씨일수록 눈이 더 건조하고 가루 같아짐.
• Vocab Quiz 정답: C – crystal은 규칙적인 구조를 가진 고체이다.
• Grammar 1 정답: B – Snow는 단수 취급, feels/contains도 단수 동사.
• Grammar 2 정답: C – ‘Falling’이 문장 주어로 쓰여 동명사 / 나머지는 현재분사.
• Grammar 3 정답: B – speaking은 동명사, 나머지는 모두 현재분사 (형용사, 진행형 포함)

💡 감성 마무리 문장
하늘에서 내려오는 눈송이 하나에도, 공기와 과학, 그리고 고요함이 담겨 있어요. 그 가벼움 속에 우리가 놓치기 쉬운 섬세함이 숨어 있답니다.

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