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Why the Fridge Keeps Food Fresh

Read a grade 2 science article about why cold keeps food fresh and how a fridge moves heat, then answer questions about details and words.

Grade 2ELAInteractive · Printable

Aligned toRI.2.10

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
10 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 2
Subject: ELA
Question types: Fill in the blank, Multiple choice, Matching, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students read and understand a grade 2 science text about keeping food cold.
Students use question headings to find key details in an informational text.
Students explain causes and effects described in a science text.

How to use

Read the article with students one question heading at a time, then have them answer on their own. Readers who need support can reread paragraph 3 with a partner.

Curriculum

Common Core standard covered

RI.2.10

By the end of the year, read and understand grade 2-3 informational texts in history, science, and technical subjects, with support at the high end.

Preview

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Name Date

Why the Fridge Keeps Food Fresh

Read a science article with question headings and answer questions about it.

Read the article

Read the article. Each paragraph starts with a question and then answers it.

Keeping Food Cold

1Why does food go bad?
Food can go bad, or spoil, because of tiny living things such as bacteria and mold. At first, they are too tiny to see. When food is warm, they grow fast. Soon the food may smell bad, taste sour or grow fuzzy spots.

2How does cold help?
In the cold, bacteria and mold grow much more slowly. That is why milk and leftovers stay fresh longer in a refrigerator, or fridge. A freezer is even colder. In a freezer, bacteria and mold stop growing, so frozen food can last for months.

3Where does the heat go?
A refrigerator does not make cold. Instead, it moves heat. A special liquid flows through thin tubes. Inside the fridge, it soaks up heat and turns into a gas. A pump pushes the gas to tubes on the outside. There, the heat escapes into the kitchen. That is why the back or bottom of a fridge can feel warm.

4How can you help?
Keep the fridge door closed when you can. A rubber strip around the door seals the cold air inside. Each time the door opens, warm air rushes in, and the fridge must work harder.

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