When bodies of matter are heated, they … . 1. get smaller 2. expand 3. freeze 4. contract
2.- Expand
Which of the following sentences is not true? 1. Light travels very fast. 2. Light travels in straight lines. 3. Light can pass through any material. 4. The sun is a natural light source.
3.- Light can pass through any material.
What do thermal insulators do?
They stop heat from passing.
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