🔍 Key Concepts

• electric arc welding produces intense light, heat, and electrical energy • different types of hazards: radiation, sparks, and electric shock • how exam questions sometimes use “all of the above” when more than one choice is correct

💭 Think About

• For each option (A, B, C), ask yourself: could this realistically harm a welder if proper protection isn’t used? • Think about the personal protective equipment (PPE) welders wear—what are they trying to protect themselves from? • If more than one option clearly describes a real hazard, what does that suggest about a possible best choice?

✅ Before You Answer

• Make sure you recognize that arc radiation (visible, UV, and IR) can damage eyes and skin. • Confirm that flying sparks and hot metal can start fires or burn skin and clothing. • Remember that welding equipment uses significant electrical current, so electric shock is a known risk if handled improperly.