Second Grade Science Experiments (Page 22)

Fight Flooding and Pollution with...a Garden?!

Science Fair Project Idea

Scientific Method

What looks pretty, stops flooding, and helps fight pollution? A rain garden! Find out how by building and testing your own miniature rain garden in a plastic bottle. Read more

Forensic Science: Building Your Own Tool for Identifying DNA

Science Fair Project Idea

Scientific Method

When biologists want to separate different pieces of DNA, RNA, or proteins they use a technique called gel electrophoresis. In this science project you'll build a gel electrophoresis chamber and use it to discover how many components are in different colors of food coloring dye. Read more

How Does a Hovercraft Work?

Science Fair Project Idea

Scientific Method

Have you ever ridden on a hovercraft? It is like gliding on a cushion of air! In this science project, you will make your own mini hovercraft using a CD or DVD and a balloon and investigate how the amount of air in the balloon affects how long the hovercraft hovers. Read more

How the Strength of a Magnet Varies with Temperature

Science Fair Project Idea

Scientific Method

Physicists sometimes study matter under extreme conditions. For example, think of the emptiness of interstellar space vs. the unimaginable crush of pressure at the center of a neutron star, or an object dipped in liquid nitrogen vs. the tiles on the space shuttle during re-entry. Here's an experiment on permanent magnets in "extreme kitchen" conditions that you can try at home. Read more

Ocean Bioluminescence: Investigate When and How Dinoflagellates Glow

Science Fair Project Idea

Scientific Method

Imagine the ocean water turning bright red or seeing ocean waves glowing a beautiful blue color. Sounds impossible—but it is not! Red tides and glowing waves are caused by microscopic organisms living in the ocean called dinoflagellates. Some dinoflagellates have the ability to produce light through a process called bioluminescence. When and how do these organisms glow? In this science project, you will investigate how changing the dinoflagellate's exposure to light and dark affects its… Read more

Stay warm with thermal insulation

STEM Activity

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What do you do when it gets very cold in winter? You probably turn your heater on, put on an extra layer of clothes, or cuddle under a warm blanket. But have you ever thought about why a jacket helps you stay warm? What is the purpose of our clothes, and why are they made from fabrics and not foils? Find out the answers in this activity; your results may even tell you the best way to stay warm in the cold! Read more

Teach About Newton's Laws of Motion

Blog Post

Use these free STEM lessons and activities to teach about Newton's laws of motion. Newton's Laws of Motion in the K-12 Classroom Across all grade bands, students explore science related to forces, motion, and interactions between objects; concepts that use Newton's laws of motion as a fulcrum for understanding forces and motion; inertia and equilibrium; the relationship between mass and acceleration; the difference between acceleration and velocity;… Read more

Test Your Foods for Starch

STEM Activity

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Have you ever heard about starchy and non-starchy foods? What is the difference? Starchy foods contain the carbohydrate starch, which is converted to sugar (glucose) inside our body for energy production. How do we know which foods contain starch and which do not? There is a simple chemical test that you can do to detect starch, which involves an iodine solution. The iodine solution turns any food that contains starch dark blue. Try this activity and watch it in action yourself! Read more

Which Fruits Can Ruin Your Gelatin Dessert?

Science Fair Project Idea

Scientific Method

Why are some fruits, like pineapple, not recommended for adding to gelatin? It is because the gelatin may not solidify well if it has these fruits in it. In this science project you will determine whether certain enzymes in some fruits are preventing gelatin from solidifying, and whether there is a way to still include these fruits without ruining your gelatin dessert. It is an experiment with edible results! Read more

10 STEM Activities with Cardboard Tubes

Blog Post

Don't throw those out! Save all the empty cardboard tubes! These simple materials can be put to use in fun hands-on science and engineering activities. This roundup highlights 10 free STEM activities you can do with empty cardboard tubes from toilet paper or paper towel tubes. Recycled materials are great for many hands-on science and engineering activities. Paired with craft materials and some tape or glue, kids can turn recycled containers and… Read more

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