時計回りに回すと、暖かい空気を部屋の下の方へ押し出すのに役立ちます。歯科医は一般的に、3ヶ月ごとに歯ブラシを交換することを推奨しています。金属は火花を発生させ、電子レンジを故障させる可能性があります。温かい蒸気が冷たいガラスに触れると、小さな水滴に変わるためです。冷蔵庫の奥の方は、冷却システムに近いため、通常より冷たくなっています。煙探知機は、火災の可能性がある煙を検知した際に人々に警告を発します。一部のデバイスは、電源がオフの状態でも電力を消費し続けます。食器洗い機は、水と洗剤を使用して皿、コップ、調理器具を洗浄します。アルミホイルは熱を反射することで熱損失を抑えます。洗浄することで、食品間の細菌の拡散を防ぐことができます。玉ねぎを切ると目を刺激する化合物が放出されるからです。新鮮な卵は通常沈みますが、古い卵は浮くことがあります。通常の状態では、水は摂氏100度で沸騰します。パンは食感が変化し、水分が減少することで古くなります（硬くなります）。蜂蜜は腐敗しにくいため、非常に長い間食べることができます。塩は氷が溶ける温度（融点）を下げます。食品を分けることで二次汚染（交差汚染）を防ぐことができます。期限表示は、消費者が鮮度や安全性の情報を知るのに役立ちます。水蒸気の圧力が、粒が破裂するまで高まるからです。ハチミツの天然の特性が腐敗を防ぎます。光は音よりも速く伝わるため、最初に稲妻が見えます。水は凍ると膨張するため、氷は液体の水よりも密度が低くなります。金属は木よりも素早く肌から熱を奪います。物質間の摩擦によって、小さな電荷が蓄積されることがあります。葉緑素（クロロフィル）が消失すると、葉に含まれる他の色が目に見えるようになります。飛行機の翼の形状と動きが揚力を生み出します。虹は太陽光が小さな水滴を通過するときに形成されます。地球の傾きにより、地球の異なる場所に届く太陽光の量が変化するためです。鏡は光を反射して鮮明な像を作り出します。石鹸の分子が油に付着し、水で洗い流せるようにします。黄色の信号は、信号が変わろうとしていることを運転手に警告します。あまりに多くのデバイスを接続すると、回路が過負荷になり安全上のリスクが生じる可能性があります。熱源を取り除くことで、小さな火が大きくなるのを防ぐことができます。シートベルトは人を固定することで怪我を減らすのに役立ちます。保証は特定の欠陥や問題に対して保護を提供します。異なるパスワードを使用することで、オンラインセキュリティが向上します。食品ラベルは、内容物、栄養、日付の詳細を提供します。リサイクルは材料を節約し、埋立地の廃棄物を減らすのに役立ちます。緊急用品は、嵐や停電、その他の出来事の際に役立ちます。手洗いは有害な細菌の拡散を抑えるのに役立ちます。You scored 0 out of 40You scored 1 out of 40You scored 2 out of 40You scored 3 out of 40You scored 4 out of 40You scored 5 out of 40You scored 6 out of 40You scored 7 out of 40You scored 8 out of 40You scored 9 out of 40You scored 10 out of 40You scored 11 out of 40You scored 12 out of 40You scored 13 out of 40You scored 14 out of 40You scored 15 out of 40You scored 16 out of 40You scored 17 out of 40You scored 18 out of 40You scored 19 out of 40You scored 20 out of 40You scored 21 out of 40You scored 22 out of 40You scored 23 out of 40You scored 24 out of 40You scored 25 out of 40You scored 26 out of 40You scored 27 out of 40You scored 28 out of 40You scored 29 out of 40You scored 30 out of 40You scored 31 out of 40You scored 32 out of 40You scored 33 out of 40You scored 34 out of 40You scored 35 out of 40You scored 36 out of 40You scored 37 out of 40You scored 38 out of 40You scored 39 out of 40You scored 40 out of 40
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私たちは毎日、意識することなく物を使い、選択をし、小さな問題を解決しています。
しかし、身の回りの世界について、あなたはどれだけ本当に知っていますか？
家庭の知恵や食べ物の事実から、簡単な科学や日常の決断まで、このクイズは実生活で使う知識をテストします。