How UV Light Changes Ice Chemistry (English, Level A1)

Ice changes when UV light from the sun shines.
Scientists use computer simulations to watch changes.
They study how ice absorbs and emits light.
Some ice has small defects inside.
Defects make the ice absorb different colours.
UV light can break water into pieces.
Electrons may move or become trapped.
Researchers want to test predictions with experiments.
Results may affect greenhouse gas predictions.

Difficult words

simulation — a computer model that copies reality

simulations

absorb — take in light or energy

absorbs

emit — give out light or energy

emits

defect — a small problem or hole inside material

defects

electron — a very small particle with negative charge

Electrons

greenhouse gas — a gas that warms the Earth's atmosphere

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

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How UV Light Changes Ice Chemistry^{CEFR A1}

Difficult words

Discussion questions

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How UV Light Changes Ice Chemistry CEFR A1

Difficult words

Discussion questions

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How UV Light Changes Ice Chemistry^{CEFR A1}