Invisible Forces – Exploring Gravity

What is Gravity? Gravity is an invisible force that pulls objects towards each other. Earth’s gravity keeps us on the ground and makes things fall to the ground.  Gravity depends on Mass and Distance. Every object that has a mass also has gravity. The greater the...

Food Chains & Food Webs

What is a Food Chain? A food chain shows how different organisms in an ecosystem depend on each other for food. It is a single path of energy flow in an ecosystem. Producers: The food chain starts with producers that make their own food. Plants and algae produce their...

Birds: Concept of Flight

How Do Birds Fly? Birds have special adaptations that help them fly. Wings: Birds’ wings are shaped like an airfoil, bigger up front and taper towards the back.  Air flows over and under a bird’s wings. The air on top pushes less on the wing than the air on the...

Diverse Life in Rainforests

What is a Rainforest?  Rainforests are lush, green forests in tropical regions near the Equator. They receive plenty of rainfall year-round.  More than half of the world’s plant and animal species live in the rainforests. Rainforests consist of 4 layers:  Emergent...
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