Science Fair Projects
earth scienceeasy elementary 7 days

The Great Water Evaporation Race

In this project, students will investigate how temperature, wind, and surface area affect the rate of water evaporation. By observing and measuring water levels over time, they learn about the water cycle and environmental factors that influence evaporation.

The Great Water Evaporation Race

Hypothesis

If the temperature is higher, then the water will evaporate faster compared to cooler temperatures.

Materials Needed

Clear plastic cups — 5Buy
Water — 1Buy
Marker — 1Buy
Ruler — 1Buy
Fan — 1Buy
Thermometer — 1Buy
Notebook — 1Buy
Clock or Timer — 1Buy

As an Amazon Associate, this site earns from qualifying purchases.

Step-by-Step Procedure

  1. 1

    Fill each cup with the same amount of water and mark the initial water level.

  2. 2

    Place one cup in a sunny spot, another in the shade, one with a fan, and one at room temperature.

  3. 3

    Measure and record the initial water temperatures.

  4. 4

    Leave the cups undisturbed for 24 hours.

  5. 5

    Measure and record the water levels at the same time each day.

  6. 6

    Note the change in water levels in relation to each environment's condition.

  7. 7

    Repeat for a week to observe trends.

  8. 8

    Graph the change in water level against each condition to analyze results.

Expected Results

Water placed in warmer areas or under a fan should evaporate faster than those in cooler conditions. This demonstrates how environmental factors affect evaporation rates.

Variables

Independent Variable

Environmental condition (temperature, airflow)

Dependent Variable

Rate of water evaporation

Controlled Variables

Amount of water, Type of container, Initial temperature

Safety Notes

Ensure cups are secure to prevent spills. Handle all equipment with care, especially thermometers.

Presentation Tips

  • Create a chart or graph to display evaporation rates visually.

  • Include photos of the setup and experiments over time.

  • Discuss real-life implications of evaporation on climate and water resources.

Frequently Asked Questions

Why does water evaporate faster in sunlight?

Sunlight increases temperature, which speeds up the movement of water molecules, leading to faster evaporation.

Can this experiment be done indoors?

Yes, but varying temperature sources or using a fan can simulate different conditions.

How does surface area affect evaporation?

A larger surface area allows more water to be exposed to air, increasing evaporation rate.

Related Projects

Analyzing the Role of Vegetation in Urban Heat Islands
earth sciencehard

Analyzing the Role of Vegetation in Urban Heat Islands

This project investigates how vegetation influences temperature in urban heat islands. By comparing areas with varying plant cover, students can assess the cooling effects of vegetation.

30 days·high
Animal Habitats Diorama Science Project - Explore Different Ecosystems
earth scienceeasy

Animal Habitats Diorama Science Project - Explore Different Ecosystems

In this diorama project, students can explore various animal habitats. By creating a 3D model, they will learn about different ecosystems, the animals that live there, and their adaptations.

7 days·elementary
Aquatic Echoes: Impact of Ocean Acidification on Sound Propagation
earth sciencehard

Aquatic Echoes: Impact of Ocean Acidification on Sound Propagation

This project explores the effects of ocean acidification on how sound travels underwater. By simulating different pH levels and measuring sound speed, students will understand the environmental implications of changing ocean chemistry.

25 days·high
Biodegradable vs Plastic Decomposition Rates Science Project
earth sciencemedium

Biodegradable vs Plastic Decomposition Rates Science Project

In this project, you'll compare how long biodegradable materials take to decompose versus plastic. This will shed light on pollution and waste management challenges.

10 days·middle
Biofuels Science Fair Project: Fuel Efficiency Comparison
earth sciencehard

Biofuels Science Fair Project: Fuel Efficiency Comparison

This project compares the fuel efficiency of various biofuels, such as ethanol and biodiesel. Students will conduct experiments to measure energy output and sustainability, aligning with current environmental challenges.

10 days·high
Bioremediation: Can Plants Clean Contaminated Soil Science Project
earth sciencehard

Bioremediation: Can Plants Clean Contaminated Soil Science Project

Explore the potential of plants to remediate contaminated soil. Conduct experiments to determine how effective certain plants are at absorbing pollutants!

14 days·high

Like this project? Get more ideas!