Some materials burn because they can catch fire when they get hot! 🔥 When things like wood or paper get very warm, they turn into flames and smoke. This is called burning.
Fire needs three things to happen: something to burn (like wood), air (to help the fire grow), and heat (like from a match). If one of these is missing, the fire stops!
Elevators are like magic boxes that take you up and down in buildings! 🏢✨ They have a special room (called a car) that moves with the help of strong ropes and a big motor. When you press a button, the motor pulls the ropes to make the elevator go up or down.
There are also doors that open and close automatically to keep everyone safe. 🚪💡
A chemical reaction is like magic! ✨ It's when things mix together and change into something new. Like when you mix baking soda and vinegar, it fizzes and bubbles—that's a chemical reaction! 🧪
Think of it like making cookies. You mix flour, sugar, and eggs, and after baking, you get yummy cookies! 🍪 That's a kind of chemical reaction too!
Our bodies are like tiny factories 🏭 that are always working! When you grow or get a boo-boo, your body makes new cells to fix it. Cells are like tiny building blocks 🧱 that make up everything in your body.
Inside your body, there are special cells that can split into two new cells. It's like magic! ✨ One cell becomes two, and that's how you grow bigger and stronger every day!
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. 🌧️
It's like when you leave a toy outside in the rain, and it gets all brown and yucky! That's rust!
Solar panels are like magic windows that catch sunlight and turn it into electricity! 🌞 They are made of special materials that get excited when the sun shines on them. This excitement makes tiny bits of electricity flow, which we can use to power things like lights and toys!
Imagine the sun is giving the solar panel a big hug, and the panel says, "Thank you!" by making electricity. Cool, right?
Two brothers named Wilbur and Orville Wright invented the airplane! 🎉 They worked very hard and flew the first airplane in 1903. It was like a big kite with an engine! ✈️
They flew it in the sky for just a few seconds, but it was amazing! Now, airplanes take us all over the world! 🌍
Feeling nervous is like having butterflies in your tummy! 🦋 It happens when you're worried or scared about something new or important, like meeting new friends or going to school for the first time.
Your body is just trying to help you be ready for something exciting or a little scary. It's like your brain saying, "Hey, pay attention!"
Our bodies have tiny superheroes inside called white blood cells! 🦸♂️ They work hard to find and fight the bad viruses that make us sick. Sometimes, when we get a fever or a runny nose, it means our superheroes are doing their job! 💪
Our skin and nose hairs also help keep viruses out, like a strong castle wall! 🏰
When you run, your body works hard like a little engine! 🚂 Your muscles move fast, and your heart beats quickly to give them energy. After running, your body needs to rest because it used up a lot of energy, just like when your toy car stops after playing too much!
Drinking water and resting helps your body feel better. 💧😊