Weight tells us how heavy or light something is. Have you ever picked up a book and felt it was heavy? Or held a feather and felt it was light? That's weight! In this topic, you'll learn to recognize which things are heavy and which are light.

What is Weight?

Weight is how heavy something feels when you lift it or hold it. Some things are heavy (hard to lift), and some things are light (easy to lift).

Heavy Objects

Heavy means it's hard to lift or carry. Heavy things might:
- Make your arms tired
- Be hard to pick up
- Feel like they're pulling down
- Need two hands to carry

Examples:
- A big book
- A full backpack
- A jug of milk
- A chair

Light Objects

Light means it's easy to lift and carry. Light things might:
- Be easy to pick up with one hand
- Feel like they barely weigh anything
- Not make your arms tired
- Sometimes blow away in the wind!

Examples:
- A feather
- A piece of paper
- A cotton ball
- A balloon

How to Tell

You can tell if something is heavy or light by:
1. Lifting it - How hard is it to pick up?
2. Holding it - Do your arms get tired?
3. Comparing to your body - Is it hard to carry?

Heavy things at home:
- A gallon of milk
- A big dictionary
- Your toy box full of toys
- A watermelon

Light things at home:
- A sock
- A plastic cup
- A napkin
- A stuffed animal

Heavy things at school:
- Your full backpack
- A full water bottle
- A big block
- A pile of books

Light things at school:
- One crayon
- A piece of paper
- An eraser
- A plastic toy

1. Feel with your hands: Pick things up gently to feel their weight
2. Use both hands: Try lifting with one hand, then two hands
3. Notice your muscles: Do your arms work hard or not?
4. Talk about it: Say "This is heavy" or "This is light"
5. Be safe: Always ask an adult before lifting something you're not sure about!

NASA Connection: Rockets are very heavy when they're full of fuel! A rocket might weigh millions of pounds. But in space, things feel weightless because there's no gravity pulling them down.

Nature Connection: Rocks are usually heavy. Leaves are light. Big animals like elephants are heavy. Butterflies are light. On a nature walk, you can find heavy and light things!

NOAA Weather: Rain clouds are heavy because they're full of water. When clouds get too heavy, the rain falls down!

Important: Never try to lift something that's too heavy for you! Always ask an adult for help with:
- Things that are as big as you
- Things you can't see over when you hold them
- Things that hurt when you try to lift them

Being safe is more important than being strong!

Mistake: "Big means heavy"
- Truth: Some big things are light, like a balloon or a big empty box. Some small things are heavy, like a rock!

Mistake: "You can tell just by looking"
- Truth: Sometimes you need to pick something up to tell if it's heavy or light. Things can surprise you!

• Heavy things are hard to lift
• Light things are easy to lift
• You feel weight with your hands and arms
• Big doesn't always mean heavy
• Always be safe when lifting things!