Hands-on science activities

1 Introduction to hands-on science activities Free 1 video(s) ●

1 How does a giant balloon float in mid-air without moving up or down? Free

1 How much energy does a carnivore need to survive? Free 2 How do Earth's major systems interact? 🔒 Pro 3 How does a tiny acorn grow into a giant oak tree? 🔒 Pro

1 Why do plants wilt when they don't get enough water? 🔒 Pro 2 What causes harmful algae blooms? 🔒 Pro 3 How can measuring cellular respiration help us reach a fitness goal? 🔒 Pro 4 How do limited resources impact populations that live near us? 🔒 Pro 5 What happens when a food web is disturbed? 🔒 Pro 6 What evidence can scientists use to tell if an ecosystem is healthy? 🔒 Pro 7 Why do some mutations cause genetic disorders? 🔒 Pro 8 Why do puppies in the same litter look different? 🔒 Pro 9 How can we use skeletons and fossils to understand whale evolution? 🔒 Pro

1 What happens during a solar or lunar eclipse? 🔒 Pro 2 How does weathering affect natural landscapes over time? 🔒 Pro 3 How can we reduce our garbage footprint? 🔒 Pro 4 How and why is Earth's climate changing? 🔒 Pro

1 How can a skydiver fall safely? 🔒 Pro 2 How do bees pick up pollen in flowers? 🔒 Pro 3 Why doesn't a basketball bounce forever? 🔒 Pro 4 How can light interactions be used to create art? 🔒 Pro

1 Why are human-shark interactions increasing around Cape Cod? 🔒 Pro 2 How do stem cells give rise to the diverse cell types that make up the human body? 🔒 Pro 3 Why do animals often prefer to eat ripe fruit? 🔒 Pro 4 Why do plants have different kinds of leaves? 🔒 Pro 5 How can gene mutations help us understand the formation of flowers? 🔒 Pro 6 Why do kittens in a litter often look so different? 🔒 Pro 7 Why are male birds often more brightly colored than females? 🔒 Pro 8 How can we reconstruct the evolution of species across islands? 🔒 Pro 9 How does biodiversity vary in my community? 🔒 Pro

1 What makes a neon sign glow? 🔒 Pro 2 What hidden trade-offs exist when we choose aluminum cans versus glass bottles for packaging? 🔒 Pro 3 How can a big log turn into a tiny pile of ash when it burns? 🔒 Pro 4 How does the International Space Station produce enough oxygen to keep the astronauts alive? 🔒 Pro 5 How does water form droplets on surfaces? 🔒 Pro 6 Why does sand at the beach feel hot, even when the water feels cool? 🔒 Pro 7 How can solubility principles help us detect and eliminate chemical contaminants in our water supply? 🔒 Pro 8 Why does food in a refrigerator stay fresh for longer? 🔒 Pro 9 How do we know when dinosaurs lived on Earth? 🔒 Pro

1 How do engineers design strong bridges? 🔒 Pro 2 How do engineers design safety cushions to save lives? 🔒 Pro 3 Why is a Neptune year so long? 🔒 Pro 4 Why do clothes develop static cling in a dryer? 🔒 Pro 5 How do engineers design roller coasters? 🔒 Pro 6 How can motion produce electricity? 🔒 Pro 7 Why do optical discs reflect rainbow colors? 🔒 Pro 8 How can starlight reveal the elements in a star? 🔒 Pro 9 How do carbon dioxide and albedo affect how Earth interacts with sunlight? 🔒 Pro 10 How do we know when dinosaurs lived on Earth? 🔒 Pro