Books with author Victoria G. Christensen

Have you ever wondered how a set of batteries power the remote for your TV? Or have you ever wanted to examine the battery inside a car? Without batteries, we would not be able to power many of the electronics we use every day. But how does a battery store energy and provide electricity to these devices? What are the parts that make a battery work? Discover the history of batteries and how scientists and engineers figured out ways to store electricity. Explore what makes up a battery, including an anode, a cathode, and an electrolyte, and learn how batteries power all kinds of electronics from a cell phone to a bus!

Imagine life on Earth without water. Could you live in such a world? Today, almost all life on Earth relies on water, including plants and animals. The freshwater biome includes lakes, rivers, wetlands, ice, and even water in the ground. This biome holds a source of food, air, and water for plants, animals, and people all over the world. Learn about the geography and resources of the freshwater biome as well as how animals and people have adapted to and impacted freshwater environments. Explore this biome's future and what people can do to help keep it safe.

Have you ever wondered how a set of batteries power the remote for your TV? Or have you ever wanted to examine the battery inside a car? Without batteries, we would not be able to power many of the electronics we use every day. But how does a battery store energy and provide electricity to these devices? What are the parts that make a battery work? Discover the history of batteries and how scientists and engineers figured out ways to store electricity. Explore what makes up a battery, including an anode, a cathode, and an electrolyte, and learn how batteries power all kinds of electronics from a cell phone to a bus!

Have you ever seen lights turn on automatically when you step into a room? Or have you ever wondered how a garage door knows to not close when someone is standing beneath it? What these and countless other electronic devices have in common is a sensor. But how do sensors work? What are they used for? Discover how robotic and electronic sensors can be programmed to work as our five senses do. Learn how sensors are used to save energy, keep us safe, and sometimes make life a little more convenient!

Did you know that trees, buildings, and even people can act as conductors for electricity? Or have you ever wondered why we're warned not to go outside during a thunderstorm? Scientists, engineers, and electricians use conductors in their work and research, but conductors are also found in many of the devices and tools we use every day. But how does electricity travel through a conductor? Why are some materials better conductors than others? Discover how a conductor works, as well as what makes a good insulator, and explore how different types of conductors work in modern technology!

Did you know that trees, buildings, and even people can act as conductors for electricity? Or have you ever wondered why we're warned not to go outside during a thunderstorm? Scientists, engineers, and electricians use conductors in their work and research, but conductors are also found in many of the devices and tools we use every day. But how does electricity travel through a conductor? Why are some materials better conductors than others? Discover how a conductor works, as well as what makes a good insulator, and explore how different types of conductors work in modern technology!

Have you ever seen lights turn on automatically when you step into a room? Or have you ever wondered how a garage door knows to not close when someone is standing beneath it? What these and countless other electronic devices have in common is a sensor. But how do sensors work? What are they used for? Discover how robotic and electronic sensors can be programmed to work as our five senses do. Learn how sensors are used to save energy, keep us safe, and sometimes make life a little more convenient!

The grassy view of a prairie stretches out forever! Although it only looks that way, large grasslands are found on every continent except Antarctica. The grassland biome may be called by different names, such as savannas or steppes, but they're found all over the globe. Learn about the geography and resources of the grassland biome as well as how animals and people have adapted to and impacted grassland environments. Explore this biome's future and what people can do to help keep it safe.

The grassy view of a prairie stretches out forever! Although it only looks that way, large grasslands are found on every continent except Antarctica. The grassland biome may be called by different names, such as savannas or steppes, but they're found all over the globe. Learn about the geography and resources of the grassland biome as well as how animals and people have adapted to and impacted grassland environments. Explore this biome's future and what people can do to help keep it safe.

Imagine life on Earth without water. Could you live in such a world? Today, almost all life on Earth relies on water, including plants and animals. The freshwater biome includes lakes, rivers, wetlands, ice, and even water in the ground. This biome holds a source of food, air, and water for plants, animals, and people all over the world. Learn about the geography and resources of the freshwater biome as well as how animals and people have adapted to and impacted freshwater environments. Explore this biome's future and what people can do to help keep it safe.