A Wonderleaf question
How do refrigerators keep food from spoiling?
a real page from the book
Refrigerators keep food from spoiling by making life harder for bacteria and mold. Cold air does not kill every germ, but it slows their feeding and multiplying, so milk, berries, and leftovers stay usable much longer than they would on a warm counter.
The fridge makes that cold by moving heat away from your food. A fluid called refrigerant travels through coils, gathers heat inside, then lets it go outside the box. That is why the back or bottom can feel warm while the shelves stay chilly.
Wonder words
- bacteria
- mold
- refrigerant
- coils
Try it out
Put one cracker in the fridge and one on the counter, then compare their feel and smell tomorrow.
Read the whole picture book
Watercolour scenes, straight answers, about three minutes cover to cover.
Open the picture bookKeep wondering
- How does a zipper hold together?
- How does a vacuum cleaner pick up dirt?
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- How are books made?
- How do electric cars work?
One more wonder: Why is space so dark?
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