Some things rust because they are made of metal, like iron or steel, and when they get wet or stay in the air for a long time, they start to change color and become weak. π§οΈ
It's like when you leave a toy outside in the rain, and it gets all brown and yucky! That's rust!
GPS is like a magic map in the sky! πβ¨ Tiny satellites (like stars) fly around the Earth and send signals to your phone or car. When your device gets signals from at least 3 satellites, it can tell exactly where you are! ππ±
It helps parents find the way to the zoo or the ice cream shop! π¦π¦
Virtual reality (VR) is like a magical world you can see and explore using special glasses! πΆοΈβ¨ When you put on VR glasses, it feels like you're inside a game or a movie. You can look around and see amazing things all around you, even though you're still in your room!
It's like pretending to be in a different place, but it looks so real! οΏ½
A long time ago, a clever man named Johannes Gutenberg invented the printing press! π It was like a magic machine that could make lots of books very quickly. Before that, people had to write books by hand, which took a very long time. Thanks to Gutenberg, books became easier to make, and more people could read them! π
His invention helped share stories and knowledge all around the world. π
Long ago, before cars were invented, people used animals like horses π΄ and donkeys to travel. They also walked a lot! πΆββοΈ Sometimes, they rode in big carts pulled by animals. Boats π€ were used to travel on water.
Parents could show pictures of horses and carts to make it fun!
Fireworks are like big, colorful lights in the sky! π People use them to celebrate special days because they look so pretty and make everyone happy. It's like the sky is throwing a party! π
Long ago, people thought loud noises and bright lights scared away bad things. Now, we just love how they sparkle and boom!
Long ago, people didn't have clocks like we do today! β° They used the sun, moon, and stars to tell time. ππβ¨
When the sun was high in the sky, it was daytime. When it was dark, it was night! People also used shadows from the sun to guess the time.
Fun fact: Some ancient people used big rocks called "Stonehenge" to track the sunβs movement! πͺ¨
Two brothers named Wilbur and Orville Wright invented the airplane! π They worked very hard and flew the first airplane in 1903. It was like a big kite with an engine! βοΈ
They flew it in the sky for just a few seconds, but it was amazing! Now, airplanes take us all over the world! π
Long ago, people cooked food over fires π₯! They used big stones or dug holes in the ground to make a fire. Then, they put pots or food right on the fire or hot stones to cook. Sometimes, they even wrapped food in leaves and put it in the fire to make it yummy! π
People also used clay ovens or baked bread on hot rocks. It was like a big outdoor kitchen! πΏ
Dolphins are super smart and chatty! π¬ They talk to each other using sounds like clicks, whistles, and squeaks. It's like they have their own secret language under the sea! π
They also use body language, like jumping and splashing, to say "hello" or "let's play!"