Scientists have known for a long time that things move in predictable patterns. It took an apple falling to help further their knowledge, though. We now know ho
The water you drink. The air you breathe. This book you’re holding. Everything around you is made of matter. Learn more about what makes up matter, the forms
Everything moves! Kids run around the playground, cars drive on the road, and balls fly through the air. What causes all this motion? Physics! Forces and motion
What do CDs, lamps, lasers, and microwave ovens all have in common? They all use the power of light and optics! From ancient times when scientists puzzled over
Babies crying, school bells ringing, cars roaring by, the ding signaling that a new text message has arrived . . . sounds are all around us, but how are they ma