Fill in each blank with the correct word from the lesson.

1. Refrigeration and freezing slow bacteria by _______ things cold.
2. _______ in the air carries bacteria and speeds drying.
3. Bacteria are microscopic organisms that multiply rapidly in food, producing _______s and gases that rot it.
4. Keeping Food Fresh is an important topic in _______.
5. We can learn about _______ from this lesson.

Choose the best option for each question.

1. What is the main reason food goes bad?
   a) It gets heavyb) Bacteria and mould grow in itc) Sunlight breaks it downd) Vitamins escape
2. How does sun drying preserve food?
   a) It heats bacteria to deathb) It removes moisture, stopping bacteria growingc) It seals bacteria insided) It adds salt to the food
3. Why does pickling preserve food?
   a) Vinegar or salt kills bacteriab) It freezes the foodc) It removes oxygend) It adds sugar

Write T for True or F for False in the brackets.

1. Bacteria and mould grow in it is one of the key concepts in the lesson on Keeping Food Fresh.
2. It gets heavy is the main topic of this lesson.
3. It removes moisture, stopping bacteria growing is one of the key concepts in the lesson on Keeping Food Fresh.
4. It heats bacteria to death is the main topic of this lesson.

1. In your own words, explain what Keeping Food Fresh means.
2. List two things you learned from this lesson on Keeping Food Fresh.