Wednesday, April 22nd is Earth Day, but there’s no reason we can’t celebrate all month long. Besides hiking and exploring, here are some of our favorite environmental science projects. Just click on the experiment names for directions and photos. You can find more fun outdoor experiments in my books “Kitchen Science Lab for Kids” and “Outdoor Science Lab for Kids“ (Quarry Books.)

Homemade Sweep Nets: Make a sweep net from a pillowcase and a hanger to see what arthropods are hanging out in your favorite outdoor spaces.

Homemade Sweep Nets from Outdoor Science Lab for Kids (Quarry Books)

Window Sprouts: Plant a bean in a plastic baggie with a damp paper towel to see how plants need only water and air to sprout roots and leaves.  Here’s a short video demonstrating how to make a window garden.

Window Sprouts from Kitchen Science Lab for Kids Quarto Books

Homemade Solar Oven: Using a pizza box, aluminum foil, plastic wrap, and newspaper, you can harness the sun’s energy to cook your own S’mores!

Nature Walk Bracelets: Wrap some duct tape around your wrist (inside out) and take a walk, sticking interesting natural objects like leaves and flowers to your bracelet. It’s a great way to get outdoors and engage with nature. Bring a bag along so you can pick up any trash you find.

Carbon Dioxide and Ocean Acidity: See for yourself how the carbon dioxide in your own breath can make a water-based solution more acidic. The project illustrates why adding too much carbon dioxide to Earth’s atmosphere can be harmful to ocean creatures.

Ocean Acidification Experiment from Kitchen Science Lab for Kids (Quarry Books)

Plant Transpiration:  See how trees “sweat” in this survival science experiment.

Plant Transpiration experiment from Kitchen Science Lab for Kids

Earthworm Experiment:  Do you know what kind of earthworms are living in your back yard?

Earthworm Eruption from Outdoor Science Lab for Kids (Quarry Books 2018)

Composting: Be a composting detective. Bury some things in your back yard (away from power cables) and dig them up in a few months to see how they look. Composting reduces methane gas emissions (a greenhouse gas) from dumps.

Composting Experiment from Outdoor Science Lab for Kids

Diffusion and Osmosis: See for yourself how the chemicals we add to water, put on our streets to melt ice, and spray on our lawns and crops can move into our soil, ground water, rivers, lakes and oceans.

Diffusion Experiment from Kitchen Science Lab for Kids (Quarry Books)

Solar Water Purification: This project illustrates the greenhouse effect and is a fun “survival science” experiment. Requires hot sun and some patience!

Solar Water Purification from Kitchen Science Lab for Kids

Citizen Science: Don’t forget about all the real environmental research projects you can participate in through Citizen Science programs all around the world!

For mores activities and games, check out NASA’s Climate Kids website, to see a kid-friendly diagram of the water cycle, click here,  or just get outside and enjoy the beautiful planet that sustains and nurtures us.

Looking for fun, creative summer projects? I showed off some projects from STEAM Lab for Kids this morning on WCCO MidMorning!