Glass is made from sand! π When sand gets very, very hot, it melts and turns into a liquid. Then, when it cools down, it becomes hard and clear like the glass we see every day. οΏ½
People use glass to make windows, bottles, and even pretty decorations! β¨
Air is like a big invisible blanket around us! π¬οΈ It's made mostly of two special gases called oxygen and nitrogen. We breathe in oxygen to stay alive, and plants love it too! π±
There's also tiny bits of other things in the air, like water and dust. That's why we sometimes see clouds or feel wind!
Water is made of tiny, tiny parts called molecules! π Each water molecule is like a little team of two hydrogen atoms and one oxygen atom. Thatβs why we call it H2O! π
Water can be a liquid (like in a glass), a solid (like ice), or a gas (like steam). Itβs magical! β¨
Time is like a river that never stops! π It moves forward, just like the hands on a clock. You can't see it, but you can feel it when you grow taller or when the seasons change.
Time helps us know when to wake up, eat, play, and sleep. β° It's always flowing, just like water in a stream!
A satellite is like a little spaceship that flies around the Earth or other planets! πβ¨ Some satellites are made by people, and they help us watch TV, talk on the phone, and even see the weather. Others are natural, like the Moonβitβs Earthβs big, round satellite that glows at night! π
Satellites zoom around in space and send pictures and messages back to us. Theyβre like space helpers! π
Trees shed their leaves to take a little nap during winter! π³π€ When it gets cold, trees need to save energy, so they drop their leaves and rest until spring comes.
Leaves are like little blankets for trees. But in winter, they would freeze, so trees let them go and grow new ones when it's warm again! π
The Seven Wonders of the World are amazing places built a long, long time ago! πβ¨ They are like giant toys made by people to show how clever and strong they were. Here are some of them:
People love to visit them because they are very special!
Long, long ago, there were big cities and kingdoms where people lived happily. π But sometimes, bad things happened like no rain for a long time (drought), big fights (wars), or sickness. π’ These things made it hard for people to live there, so they had to leave or the cities became empty.
Fun fact: The ancient city of Pompeii was covered by volcano ash, but it kept everything like a time capsule! πΊ
The Aztecs were a group of people who lived a long time ago in a place called Mexico π. They built big cities and beautiful temples! The Aztecs loved bright colors, music, and dancing ππΊ. They also grew yummy foods like corn, beans, and chocolate π«.
They had a special city called Tenochtitlan, which was built on an island in the middle of a lake! ποΈ
π A year is how long it takes for the Earth to go all the way around the Sun! π It takes 365 days to finish this big trip. That's why we have 365 days in a year! π
Every four years, we add one extra day (February 29th) to catch up. That's called a leap year! πΈ