Little Kids First Big Book of Why Hardcover – 1 June 2011
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National Geographic Little Kids First Big Book of Why
Linking to a popular feature in the super successful National Geographic Little Kids magazine, this book brings the browsable fun of the bestselling National Geographic Kids Almanac to a new audience: preschoolers! Using an interactive question-and-answer format and content grounded in a child’s immediate world, the Big Book of Why delivers lively information, hands-on games, simple recipes, crafts, and more.
Top review from Saudi Arabia
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Before i got the book i read some negative reviews .. one said that the book has wrong information and she gave an example of why we wrinkle when we take a long bath and she said the book said that its because warm water cause the vessels to shrink and thats wrong because warm water cause dilation of the vessels.. actually i searched the web and the book was correct considering the wrinkling method due to vasoconstriction. Second there was a mom who said that the pages separated easily from the book and thats not in my case
What made me still purchase the book is one man who said that its a book with a wide content so if there is something you dont like there must be other hundreds of fun facts for your toddlers
I hugely recommend it and i am glad i didnt cancel my purchase
Top reviews from other countries
Wrong. And in fact this trips up most elementary science students and they got it wrong here. Helium balloons don't float because they are "lighter" they float because they are less dense. Less dense objects float on more dense objects. For instance, a tanker ship is made of metals that are on their own denser and heavier than water. But as a boat they float? Why? Because as an entire object it's less dense than water (hint: Ships are largely filled with ballast like air.
Similarly, planes fly IN AIR because the air under the wing is higher pressure (denser) than the air above the wing. Is air lighter than air?
On the same page they talk about how hot air is "lighter than cold air" which it isn't. Hot air is simply less dense than cold air.