AhaBulbStuff Everyone Should Know

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AhaBulb Kids

Stuff every kid should know, with kid-safe jokes. Great for ages 6 to 12.

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  1. How long should you wash your hands?
    Show the answer

    20 seconds, about two Happy Birthdays. The CDC says scrub with soap for 20 seconds, about humming Happy Birthday twice. Warm or cold water both work. Get the backs, between fingers and under nails.

  2. How much Halloween candy should you eat?
    Show the answer

    A couple of pieces after dinner, then brush. Right after a meal your mouth makes extra spit that helps wash sugar away. Have a couple of pieces, then brush. Plain chocolate is easiest on teeth.

  3. You're lost on a hiking trail. What do you do?
    Show the answer

    Stay put, hug a tree, and blow three whistle blasts. Searchers start along your planned route, so staying put makes you easier to find. Hugging a tree keeps you calm and in one place. Three blasts means "I need help," and a whistle carries farther than your voice.

All 216 practice questions

Each one has the answer, why it's right, and the official sources. Or play them as a game and track what you've learned.

Show all 216 questions
  1. How long should you wash your hands?
  2. How much Halloween candy should you eat?
  3. You're lost on a hiking trail. What do you do?
  4. A thunderstorm chases you away from the campfire. When is it safe to go back out?
  5. You find a tick stuck in your skin after a hike. What's the best way to get it out?
  6. Time to leave camp. What's the right way to put out the campfire?
  7. Your only water at camp comes from a creek. How long should you boil it before drinking?
  8. You're at the lake all day. How often should you put on more sunscreen?
  9. A friend's fingers are numb, pale, and frostbitten. How should you warm them up?
  10. How often should you clean the lint filter in your clothes dryer?
  11. A pan of grease catches fire on the stove. What should you do?
  12. Your carbon monoxide alarm starts beeping. What should you do first?
  13. What is the main fire hazard of running an extension cord under a rug?
  14. What temperature should most home water heaters be set to?
  15. Where is the best place to keep eggs in the fridge?
  16. What is U.S. paper money mostly made of?
  17. Why is it hotter in the summer and colder in the winter?
  18. Does water flush down the toilet in the opposite direction in Australia?
  19. Is the glass in old windows thicker at the bottom because glass slowly flows down?
  20. Is there zero gravity in space where the space station orbits?
  21. What happens if you leave a penny on a railroad track and a train hits it?
  22. Can you catch a cold just from going outside with wet hair in winter?
  23. What time of day is best to water your lawn during the summer?
  24. What kind of plunger are you supposed to use to unclog a toilet?
  25. Should you run hot or cold water while using a garbage disposal?
  26. How much of the grass blade should you cut at one mowing?
  27. What is the best thing to do if you drop your phone in water?
  28. When should you turn off screens before bed?
  29. Does SPF 30 mean you can stay in the sun 30 times longer?
  30. Is any sunscreen really waterproof?
  31. If there is no soap, what hand sanitizer should you use?
  32. How much sleep does a school-age kid need?
  33. If your clothes catch fire, what do you do?
  34. After you put on hand sanitizer, what next?
  35. When do you put sunscreen on before going outside?
  36. How often should you replace a toothbrush?
  37. What temperature is generally considered a fever?
  38. At what UV Index should you start protecting your skin?
  39. Where should the front of a bike helmet sit?
  40. Most kids need a booster seat until about what height?
  41. Before crossing a street, what should you do?
  42. What does the small arrow by the fuel gauge show?
  43. When should headlights be on during rain?
  44. What should you use to wash an apple before eating it?
  45. What is the highest recommended temperature for your refrigerator?
  46. Where should raw meat sit while it marinates?
  47. How long can properly handled cooked meat leftovers stay in a fridge at 40°F or below?
  48. Is homemade cookie dough safe to eat raw if you leave out the eggs?
  49. Does a familiar caller ID prove who is calling?
  50. Why install phone software updates even when you do not want new features?
  51. During a common nosebleed, which way should you lean while sitting up?
  52. What should you put on a small, minor heat burn first?
  53. A tornado warning reaches your house. Where should you go?
  54. After telling 911 what happened, when should you hang up?
  55. When typing, how should your wrists line up with your forearms?
  56. Your desk chair leaves your feet dangling. What helps?
  57. On a PC, which shortcut usually undoes the last typing action?
  58. Which PC shortcut helps you find a word in a long document?
  59. About how long does a $1 bill last before it wears out?
  60. In Yellowstone, how far should you stay from a bear or a wolf?
  61. On a hike, is it OK to toss your apple core or orange peel into the bushes?
  62. Which bug spray ingredient is on the CDC's mosquito repellent list?
  63. Two hikers meet on a narrow, steep trail. Who has the right of way?
  64. Your day hike should end by lunch. Which item still belongs in your pack?
  65. A wild mushroom looks just like the ones from the store. Is it safe to eat?
  66. A rip current is pulling you away from the beach. Which way should you swim?
  67. Can you get a sunburn on a cloudy, cool day?
  68. What does someone in trouble in the water usually look like?
  69. What starts most wildfires in the United States?
  70. You put a fallen baby bird back in its nest. Will the parents reject it because you touched it?
  71. You find a fawn lying alone in tall grass. What should you do?
  72. How thick should new, clear ice be before you walk out on a lake?
  73. There's a thunderstorm outside. Which phone is risky to use indoors?
  74. What temperature range do many phones work best in?
  75. In an emergency, when should you text 911 instead of calling?
  76. Does charging a modern phone overnight automatically ruin its battery?
  77. Does lightning ever strike the same place twice?
  78. You're inside a hard-topped car in a lightning storm. What protects you?
  79. You see lightning, then count 10 seconds until thunder. About how far away was it?
  80. How hot can lightning heat the air around it?
  81. Why is the sky blue on a sunny day?
  82. Is it true that bats are blind?
  83. What does a camel store in its hump?
  84. A scared ostrich can't run away. What does it really do?
  85. The rain just stopped and you want to spot a rainbow. Where should the sun be?
  86. A tornado is coming while you're on the highway. Is hiding under an overpass safe?
  87. Is the "dark side of the moon" always dark?
  88. Camping high in the mountains, why does your pasta take longer to cook?
  89. The package says the wipes are "flushable." Is it OK to flush them?
  90. You're done cooking bacon. Where should the leftover grease go?
  91. Viewed from below in summer, which way should your ceiling fan spin?
  92. Does cracking your knuckles give you arthritis?
  93. You have a bad cold. Will antibiotics help you get better faster?
  94. Does reading in dim light damage your eyes?
  95. Can a flu shot give you the flu?
  96. How long, and how often, should you brush your teeth?
  97. For healthy ears, what's the best routine way to clean wax from the ear canal?
  98. Your eyes feel tired after a long time on a screen. What's the eye doctors' break rule?
  99. Dinner's done and you have hot chili left. Must it cool on the counter before refrigeration?
  100. You drop a snack on the floor and grab it in 2 seconds. Are germs on it yet?
  101. Your block of cheddar has a small spot of mold. What should you do?
  102. A can in your pantry is bulging at the top. What should you do?
  103. The smoke alarm goes off and you smell smoke. What do you do first?
  104. You got out of a house fire, but your cat is still inside. What should you do?
  105. Your family makes a fire escape plan. What special place should everyone pick?
  106. A good fire escape plan has at least how many ways out of every room?
  107. There is smoke in the hallway while you are getting out. How should you move?
  108. During a fire, you touch your closed bedroom door and it feels hot. What now?
  109. Smoke blocks your way out of your room. Where should you NOT go?
  110. You find a lighter on the floor at home. What should you do?
  111. You are helping cook on the stove. Which way should the pot handles point?
  112. Your little brother may have swallowed a cleaner. Which number reaches Poison Help?
  113. You get a small cut and it is bleeding. What helps stop the bleeding?
  114. You are pressing a cloth on a bleeding cut. Should you lift it to check?
  115. A small scrape stopped bleeding. What is the best way to clean it?
  116. A bee stings you on the playground. What should you do first?
  117. Your friend grabs their throat and can't talk or make a sound. What does it mean?
  118. Which one of these is a reason to call 911?
  119. Your friend dares you to call 911 for fun. What should you do?
  120. When you call 911, the operator asks questions. What will they want to know?
  121. No grown-ups are around, and you're not sure if it's a real emergency. What should you do?
  122. You can't find your grown-up in a big store. Who is a good person to ask for help?
  123. You're lost in a store. A shopper says, 'Let's go look outside.' What should you do?
  124. You're home alone and someone you don't know knocks on the door. What should you do?
  125. You're walking home and need help. Which place is a good 'safe spot'?
  126. Until about what age should kids cross the street with a grown-up?
  127. Your ball rolls into the street between two parked cars. What should you do?
  128. You're crossing the street while watching a video. What should you do?
  129. Riding your bike on the street, which way should you go?
  130. You fall off your bike and your helmet hits the ground hard. What now?
  131. You're on your bike and need to cross a busy road. What should you do?
  132. Kids 12 and younger should ride where in the car?
  133. The school bus is coming. How far from the curb should you wait in line?
  134. You get off the school bus and need to cross. Where should you never walk?
  135. You want to go for a swim at the lake. What is the rule?
  136. You're going for a boat ride and you swim really well. Do you need a life jacket?
  137. Your friend is struggling in the water. What should you do?
  138. You're swimming in a lake for the first time. How should you get in?
  139. At the pool, which spot should kids stay away from?
  140. You feel a big sneeze coming and have no tissue. Where should it go?
  141. Your friend has a cold and offers you a sip of their drink. What should you do?
  142. Brushing is twice a day. How often should you floss between your teeth?
  143. When are the sun's rays strongest during the day?
  144. It's a hot day and you're playing soccer. When should you drink water?
  145. How much active play do kids ages 6 to 17 need each day?
  146. Your friend asks for your game password. Who should know your password?
  147. A new friend in an online game asks where you go to school. What should you do?
  148. Someone in your online game says they are a kid named Alex. What should you remember?
  149. A player you do not know sends you a link in a game chat. What should you do?
  150. Someone keeps sending you mean messages in a game. What should you do first?
  151. A video online makes you feel scared or mixed up. What should you do?
  152. You are making a username for a new online game. Which one is safest?
  153. You took a fun picture of yourself and want to post it online. What first?
  154. You are making a new password for a game. Which one is strongest?
  155. A new game app asks to use your camera and location. What should you do?
  156. You see a cute wild squirrel near your picnic table. What should you do?
  157. Your dog begs for a bite of your chocolate bar. Why should you say no?
  158. Your family is snacking on grapes and the dog wants one. What should you do?
  159. You are helping take care of the family dog. What does it need all day long?
  160. You and a grown-up are walking the dog near a busy road. How should it walk?
  161. You are playing soccer at the park and hear thunder. What should you do?
  162. You finish a granola bar on a trail and there is no trash can. What now?
  163. What is the nature-friendly reason to stay on a marked trail?
  164. Your family is going on a hike. What should you do before you leave?
  165. It is snowy and you are going outside to play. What is the best way to dress?
  166. In fall, the green leaves on a maple tree turn red and yellow. Why?
  167. A bee lands on one flower, then flies to the next. How does it help?
  168. You dig in the garden and find lots of earthworms. How do they help?
  169. You look up at big fluffy clouds in the sky. What are they made of?
  170. Rain falls, puddles dry up, and clouds form again. What is this called?
  171. The full moon looks bright at night. Where does its light come from?
  172. A bean plant grows leaves. What does it need to make its own food?
  173. Many birds fly far south every fall. What is the main reason?
  174. Snow covers the woods in the middle of winter. What are many bears doing?
  175. A butterfly changes a lot as it grows. What is the right order?
  176. A grown-up is frying food. Should they leave the kitchen?
  177. Dinner is cooking. Where is the safest place for kids to play?
  178. Your friend has a food allergy. What should happen before sharing a snack?
  179. Before washing a new shirt, where should you check first?
  180. You see another kid being bullied. What should you do?
  181. Two kids want the same game piece. What is a fair choice?
  182. You hurt a friend's feelings. What makes a better apology?
  183. You disagree with a classmate. How can you speak up well?
  184. Your phone keeps buzzing during homework. What helps you focus?
  185. A big study list feels hard. What can make it easier?
  186. You feel upset but are unsure how to explain it. What helps?
  187. A worry feels too big to handle alone. Who can help?
  188. Friends pressure you to do something wrong. What can you do?
  189. Colorful laundry packets look interesting. Who should handle them?
  190. The washer has only two shirts. What usually saves more energy?
  191. You have limited money. Which should usually come first?
  192. You want something costly later. What can help you save?
  193. You receive an allowance. What is a smart first step?
  194. Your budget is ten dollars. Which shopping plan works?
  195. A dime is smaller than a nickel. Which coin is worth more?
  196. How many cents have the same value as one dollar?
  197. Does the same U.S. agency make both coins and paper bills?
  198. For most family laundry, which water setting can save energy?
  199. Your shirt can hang safely. Which drying choice saves energy?
  200. The dishwasher is half empty. When should it usually run?
  201. Before loading a modern dishwasher, what should you do with food scraps?
  202. While brushing your teeth, what should you do with the tap?
  203. You hear a toilet running long after flushing. What should you do?
  204. A recyclable container still holds food. What should happen before recycling?
  205. You leave an empty room. What should happen to its lights?
  206. On a Windows PC, a fake virus pop-up traps your browser. How can you close it without touching the pop-up?
  207. After scanning a QR code, what should you check before opening the link?
  208. A simple game wants your contacts, photos, and location. What is the privacy-smart response?
  209. You changed a new router's Wi-Fi password. Which other default password may still need changing?
  210. Does the serving size on a Nutrition Facts label tell you how much you should eat?
  211. You subtract expenses from income and get minus $8. What does that show?
  212. When sewing on a flat button, why put a pin under the first stitch?
  213. The metal hook on a tape measure wiggles slightly. Is it broken?
  214. How does your phone's GPS figure out where you are?
  215. What is at the center of nearly every cloud droplet?
  216. Why are town water tanks often built high above the ground?