Does a Dark Fridge Prevent Food from Spoiling?

based on 3 ratings
Author: Danielle Abadam

Grade Level: 3rd to 4th; Type: Food Science


This project determines whether the darkness of a closed refrigerator helps prevent food from spoiling.

Research Questions:

  • What happens to the fruits and vegetables in the darkness? Describe them.
  • What happens to the fruits and vegetables in the light? Describe them.

Ever wonder why fridge lights stay turned off when you close the door? Is it just to conserve power or does the darkness prevent food from spoiling? In this experiment, we will be determining just that.


  • Fresh fruits
  • Fresh vegetables
  • 2 Refrigerators
  • Strong Flashlight or other portable light source

Experimental Procedure:

  1. Take half of the fresh fruits and vegetables and put them in one refrigerator.
  2. Leave the refrigerator as is and close the door.
  3. Take the other half of fresh fruits and vegetables and put them in the other refrigerator.
  4. Take the flashlight/ light source and leave it on, shining the light onto the fruits and vegetables.
  5. Wait three to five days.
  6. Check on the fruits and vegetables.
  7. Describe the food. Are the fruits and vegetables firm or soft? Are they the same color as they were originally? Do they smell different? Do they taste as good?

Terms/Concepts: Spoiling, Photosynthesis, Ripening


Spoiling food:

Add your own comment
Recommended Learning Products
Trust to find smart things kids love
Unlimited Workbooks and Worksheets
90% of Students Understand Concepts Better Since Using PLUS
Unlimited Library of Children's Books
Over 750 stories at your fingertips
Make Math Practice Fun and Engaging
Interactive Math Lessons for Elementary School Students