Description A book that gives clear answers to elementary school students' curiosity! "100 Curiosities More Fun Than Riddles" is written for children who have grown past the stage of simply asking "why?" about everything, and have started developing more specific curiosities. Questions that are hard to answer clearly — like "Why can't we see the sun and stars at the same time?", "Why doesn't a looping roller coaster fall?", and "What happens if you hold in a fart?" — along with all sorts of quirky curiosities, are answered through fun and engaging stories. With clear, entertaining explanations, this book helps kids build a solid foundation of academic knowledge the more they read it. Table of Contents - Earth and Space 01 Why do volcanoes erupt? 02 It's an earthquake! 03 How are mountains formed? 04 Why is seawater salty? 05 Why do waves happen? 06 Can you separate a shadow from yourself? 07 I want to touch a cloud 08 Why does it rain and snow? 09 If you want to see a rainbow 10 The race between lightning and thunder 11 How can we predict the weather? 12 Why does wind blow? 13 Where do typhoons begin? 14 Where are the hottest and coldest places? 15 The Earth is getting warmer 16 Why do seasons exist? 17 An unwelcome visitor: yellow dust 18 Cold snap in spring? Tropical nights? 19 Why don't we fall off a round Earth? 20 Why do stars twinkle in the night sky? 21 Why can't we see the sun and stars together? 22 The moon that changes shape every day 23 The moon always follows me 24 Let's find constellations 25 Shooting stars that vanish in an instant 26 Could people live on the moon? 27 Eating food in a spaceship 28 The story of black holes 29 Did a UFO really appear? - Our Bodies 30 Does sweat taste salty? 31 Why do we get out of breath when we run? 32 Why do people snore? 33 Boogers 34 I want to stop hiccupping 35 Why do teeth get cavities? 36 What's the difference between poop and pee? 37 Why do we fart and burp? 38 What happens if you hold in a fart? 39 Why does your heart pound when you're startled? 40 Is all blood red? 41 What happens when germs enter our body? 42 Why do we sneeze and cough? 43 Foods that make you strong 44 How can I grow taller? 45 Sleep, sleep, sleep 46 Why do we dream? 47 Holding back laughter when tickled 48 Why does skin grime keep forming? 49 Why do we get goosebumps when cold? 50 I don't want wrinkles 51 The story of fingerprints 52 Will I go bald too? 53 What happens if you never cut your hair? 54 Why are we dazzled in bright places? 55 Why shouldn't we watch TV up close? 56 Why do tears come out? 57 Can you really laugh your belly button off? 58 What's different between a man's and a woman's body? 59 Why do adults have body hair? - Animals 60 How animals protect themselves 61 Animal tails 62 Why are monkeys' bottoms red? 63 Rabbit teeth vs. lion teeth 64 Do bears really hibernate? 65 Can animals talk? 66 Why do dogs pee on telephone poles? 67 The baby in a kangaroo's pouch 68 Why do crabs only walk sideways? 69 Do fish sleep? 70 How fish breathe underwater 71 Why do whales spray water from their heads? 72 How penguins survive in the cold 73 How camels survive in the desert 74 Frogs and tadpoles 75 How do snakes move without legs? 76 Lizards with cut-off tails 77 Why did dinosaurs disappear? 78 The story of spider webs 79 Why do mosquito bites itch? 80 Why do insects fly toward light? 81 Do mayflies really live only one day? 82 Why do cicadas sing? - Everyday Life 83 How vending machines tell coins apart 84 Automatic doors that open by themselves 85 Barcodes 86 Why do clock hands only turn clockwise? 87 The history of canned food 88 Why do apples turn brown? 89 Why does cola fizz? 90 Why doesn't food spoil in the fridge? 91 Why does steam rise? 92 Why does frost form on windows in winter? 93 Why does soap make bubbles? 94 Why doesn't a roller coaster fall off the track? 95 How do huge ships float on water? 96 The principle of how airplanes fly 97 What if it suddenly stops! 98 Slides 99 How is cotton candy made? 100 Where does poop go?