When a material changes shape, it means it's no longer the same form it used to be. This can happen in many ways โ by bending, stretching, squashing, melting, or even breaking! Think of it like magic, but it's actually science!
People have been changing the shapes of materials for thousands of years! Early humans shaped stones into tools and clay into pots. As we learned more about science, we discovered even cooler ways to transform materials.
Let's look at some examples of how materials change shape all around us:
| Material | How It Changes Shape |
|---|---|
| Ice | Melts into water when heated |
| Clay | Can be molded into different shapes when wet and then hardened by baking |
| Play-Doh | Changes shape when squeezed, rolled, or cut |
| Metal | Can be bent or hammered into new shapes when heated |
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Instructions:
Changes in shape can also be described using math! For example, when you stretch a rubber band, you're changing its length. We can measure how much it stretches using numbers.
The formula for strain (a measure of how much something deforms) is:
$\text{Strain} = \frac{\text{Change in Length}}{\text{Original Length}}$
Materials changing shape is a fascinating part of science! From ice melting to clay molding, these changes are all around us. Keep exploring and discovering the amazing world of materials!
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