Janice VanCleave’s Big Book of Science Experiments

Read more Polaris is called the Pole Star or North Star because it apparently remains in the same place in the sky: almost exactly above the North Pole, night after night. Face Polaris and you will be facing north. Thus, to your right is east, to your left is west, and directly behind you is south. Observe the sky for a period of time and you will find that from night to night some stars appear in the sky all year, while others are seasonal. These stars are part of constellations called circumpolar constellations, because they move in circular paths around Polaris, the Pole Star. Like horses on a carousel, the stars spin around a center point but still stay in line with one another. Thus, the shapes of constellations do not change even though they appear in different places during the night and on different nights of the year. From latitudes of 40N or greater, the four most visible northern circumpolar constellations are Ursa Major, Ursa Minor, Cassiopeia, and Cepheus. Read more Read more You Did It! Congratulations! You have made a model of the movement of northern circumpolar constellations. The apparent counterclockwise movement of these stars around Polaris is actually due to the clockwise rotation of Earth about its axis. Earth not only rotates on its axis, but also changes position in the sky in relation to the stars as it revolves around the Sun. Earth's movement around the Sun causes a slight change in the southern part of the sky seen each day. This results in different stars being visible during each season. But Earth's North Pole continues to point toward Polaris, so the northern circumpolar stars remain the same during the year. Read more

Details e-book Janice VanCleave's Big Book of Science Experiments

🗸 Author(s): Janice VanCleave
🗸 Title: Janice VanCleave's Big Book of Science Experiments
🗸 Rating : 4.6 from 5 stars (151 reviews)
🗸 Languange: English
🗸 Format ebook: PDF, EPUB, Kindle, Audio, HTML and MOBI
🗸 Supported Devices: Android, iOS, PC and Amazon Kindle

Readers' opinions about Janice VanCleave's Big Book of Science Experiments by Janice VanCleave

Keira Hunt
This gripping thriller takes readers on a rollercoaster ride through the dark alleys of a crime-ridden city, where the protagonists must unravel a complex web of deceit to solve a murder. The plot twists are relentless, keeping readers on the edge of their seats until the final revelation. With its well-developed characters and gritty atmosphere, this book is a must-read for fans of the genre.

Angeline Waters
This captivating novel weaves together history and romance in a sweeping saga of love and loss set against the backdrop of war-torn Europe. As the world is torn apart by conflict, the lives of the protagonists are forever changed by the tumultuous events of the time. With its vivid imagery and poignant storytelling, this book is a moving tribute to the resilience of the human spirit.

Ronae Berry
Delve into the pages of this thought-provoking philosophical treatise, where the author grapples with some of life's most profound questions. From the nature of existence to the meaning of morality, each chapter offers a fresh perspective on the human condition. With its rigorous logic and elegant prose, this book is sure to spark lively debate and introspection.

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