metals are expanded when they are heated give some examples the instrument which are prepared on this prints. please solve this problem with your friends plzz i will make brainlist
Answers
Answer:
hope it helps you...........
Explanation:
JUST ABOUT EVERY (but not all) solids expand with an increase in temperature. Why? Before going to the answer, let's look at a common model of a solid - the ball and spring model.
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In this model, solid matter is made of tiny little balls connected by springs. The balls would be the atoms that make up the material and the springs represent the interactions each atom has with it's neighbors. These tiny balls don't just sit there, they oscillate around just a little bit. But clearly matter isn't made of tiny little springs, right? Right. So, even though this model is not exactly true, it's still very useful. With this ball and spring model, we can explain:
The contact force with some solid isn't constant. The more something pushes against material, the greater this constant force becomes.
When you pull on a metal, it stretches.
The speed of sound is different in different materials.
This is why we use this model - because it's useful in some situations.