Hover or tap underlined Spanish terms to see their translation and exam tip.
¿Qué elementos forman el llamado tetraedro del fuego?What elements form the so-called fire tetrahedron?
Show the answer
Correct answer: c) Fuel, oxidiser, activation energy and chain reaction.
Why it is correct
Fuel, oxidiser, activation energy and chain reaction. Remove one and the fire goes out.
Why the others are not
- a) Oxygen and oxidiser are the same here, and heat is missing.
- b) Methane is a fuel.
- d) Fuel is missing.
How to work it out in the exam
- Four sides, four ways to put it out.
Where this question comes from
- Región de Murcia · 2020 · 1ª convocatoria · PER Tipo 1 · question 31 Official paper · Official answer key
- Región de Murcia · 2024 · 2ª convocatoria · PER Tipo 1 · question 32 Official paper · Official answer key
- Región de Murcia · 2025 · 3ª convocatoria · PER Tipo 1 · question 32 Official paper · Official answer key
Regulations
Pending instructor review. Machine translation, not reviewed.