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How Does a Spacecraft Reach the Moon?
The Moon is very far from Earth. Yet, scientists have been able to get satellites, shuttles, and other spacecraft into space and a few manned spacecraft to land on the Moon. ""How …
How Do Hybrid Cars Work?
In recent years, there has been much concern about the world's reliance on nonrenewable resources, such as oil. Scientists are attempting to decrease our dependency on oil - …
Why Do Ships Float?
When you step into a full bathtub, you learn a lot about displacement of water. As your body sinks into the tub, the water moves out of the way. But water is also pushing up on you …
How Do Plants Get Food?
When people get hungry, they eat a meal. All animals and plants need water and sustenance to survive and grow. Animals get their energy from eating food, but plants have a …
Forces and Motion in the Real World
Forces and motion are everywhere This book uses real-world examples to bring the concepts of force and motion to life in an approachable way. Clearly-written text draws in readers …
Why Do the Lights Turn On?
When you walk into a room and flip a light switch, a lightbulb turns on, illuminating the area. But how does one small switch do such a large job? This title enlightens readers …
How Do Islands Form?
There are hundreds of islands on Earth, from the isle of Manhattan to the island chain of the Philippines. However, these islands did not appear overnight. It often took thousands …
How Do Refrigerators Work?
Nearly every home has a refrigerator to keep foods tasty and safe to eat. But how does this handy kitchen appliance keep foods cool? ""How Do Refrigerators Work?"" explains the …
How Do Cell Phones Work?
Cell phones have changed the way people live, work, and communicate with each other. Since the first handheld phone was created in 1973, cell phones have only increased in …
How Do Aircraft Fly?
If you go outside on a windy day, you realize just how strong air can be. It can lift a kite high in the sky and grab onto a balloon and carry it away. But even when the air is …
How Do Solar Panels Work?
Among recent concerns about the use of nonrenewable fuels such as oil and coal, scientists have been trying to discover alternative ways of making energy and electricity available. …