Search for Science Fair Projects

1000 Science Fair Projects with Complete Instructions

Environmental Pollution Science Fair Project

The Greenhouse Effect in a Jar

The Greenhouse Effect in a Jar | Science Fair Projects | STEM Projects
Have you ever wondered why the Earth is so warm? This experiment will show you how the air in a jar gets warmer and warmer when exposed to sunlight, just like the Earth's atmosphere.


The hypothesis is that the air in the jar will get warmer and warmer when exposed to sunlight.

Method & Materials

You will place two thermometers in the sunlight, record the temperature readings, and then place a jar over one of the thermometers. Every minute, for ten minutes, record the readings of both thermometers.
You will need two small thermometers, a jar or other see-through container, a clock or watch, and a sunlamp or access to a sunny area to perform the experiment.


The experiment showed that the air in the jar got warmer and warmer when exposed to sunlight, just like the Earth's atmosphere. This is due to the trapping of heat by greenhouse gasses, which is called the "Greenhouse Effect".

Why do this project?

This science project is interesting and unique because it allows students to see for themselves the effects of a greenhouse, and relate this understanding to what occurs in our atmosphere.

Also Consider

Experiment variations to consider include graphing the data, and simulating global warming by using two jars, one filled with air and the other with carbon dioxide.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
Share this Science Project:

Related Science Fair Project Ideas

Cleaning Up a Vegetable Oil Spill
Learn how to make a tanker and clean up a vegetable oil "spill" with this fun science project!
How Much Space Does Trash Take Up?
The amount of trash placed in landfills and garbage dumps is a big concern. Let's look at how much space trash really occupies.
Investigating Oil Spills
Let's explore how oil spills affect marine life by creating our own oil spill and testing different materials to clean it up!
Share this Science Project: