Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

This project examines how temperature affects the volume of gas in balloons.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This project compares different liquids and the freezing, melting and boiling points of liquids.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

see whether all liquids evaporate at the same rate. In other words, does water evaporate at the same rate as juice?

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

In this experiment you will become familiar with the properties of dry ice while creating interesting effects like ice bubbles!

This project examines the affect of temperature on viscosity and surface tension of different liquids.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.