---
title: "Welder"
description: "You use heat to join pieces of metal into one strong part."
canonical: https://lightmysky.com/careers/welder
source: https://lightmysky.com/careers/welder.md
retrieved: 2026-10-19
---

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# Welder

You use heat to join pieces of metal into one strong part.

Welding melts metal so two pieces become one. Knowing how heat changes metal lets you make joints that never come apart.

Category: Engineering & Building
Page: https://lightmysky.com/careers/welder

## Subjects it draws on

- [Science](https://lightmysky.com/learn/science)
- [Mathematics](https://lightmysky.com/learn/mathematics)
- [Design & Technology](https://lightmysky.com/learn/design-and-technology)

## The topics behind it

- [States of Matter Vocabulary](https://lightmysky.com/learn/science/states-of-matter-vocabulary-mt_1JFUNQDwAJ): Metal melts from solid to liquid when you weld.
- [Heating experiments and Q = mcΔT](https://lightmysky.com/learn/science/heating-experiments-and-q-mc-t-mt_DI1cyAyGyN): Heat changes metal, so you control how hot it gets.
- [Using Tools Safely](https://lightmysky.com/learn/design-and-technology/using-tools-safely-mt_8_IFOc79VA): A welding torch is very hot, so safety comes first.
- [Choosing measurement units](https://lightmysky.com/learn/mathematics/choosing-measurement-units-mt_DOe893F6gN): You measure metal in the right units before cutting.
- [Defining attributes of shapes](https://lightmysky.com/learn/mathematics/defining-attributes-of-shapes-mt_bfhng6mOuy): You weld joints at the correct angle so pieces fit.

## Areas it leans on

- Science: Matter & Materials
- Science: Energy
- Design & Technology: Designing & Making
- Mathematics: Measurement
- Mathematics: Geometry