Home / Free Study Material / Spell Bee Summer / Class 4 Spell Bee Summer Words / combustion

Spell Bee Word: Combustion


What does combustion mean?

Word: Combustion

Part of Speech: Noun

Meaning: Combustion means the process of burning, when a substance reacts with oxygen and gives out heat and light.

Synonyms: burning

How do you spell combustion?

Syllables: com - bus - tion

Tricky part: The end sounds like chun, but no ch is written. The first part is com, with an o, even though it is said like the u in cup.

Watch out for: cumbustion, combuschun, combustoin

Memory tip: Say COM as in comb when you spell it, even though in quick speech the o sounds like the u in cup.

Combustion in a sentence

Example 1: Combustion of wood in the stove gives heat for cooking.

Example 2: Our science teacher lit a candle to show combustion.

Example 3: Car engines work by the combustion of petrol or diesel.

Fun Fact

Combustion needs three things: fuel, oxygen and heat. Firefighters call this the fire triangle, and taking away any one puts the fire out.

Practise the CREST Way

Word Makeup

Choose the suffix that completes the word:

combust

a) ian
b) tion
c) ion
d) eon

Show answer

c) ion. Combust already ends in t, so it only needs ion.

Spell-o-Spell

Choose the correctly spelt word:

a) combustion
b) chemicle
c) inflamable
d) temprature

Show answer

a) combustion. Inflammable doubles its m, temperature keeps the a after the p, and chemical ends in cal, so those three are wrong here.

Mingle-Mangle

Form a meaningful word from the jumbled letters:

nobcutsiom

a) commotion
b) combination
c) compulsion
d) combustion

Show answer

d) combustion. The letters have a b, an s and a t but only one m and one n: combustion.

Multiple Choice Questions

1. In which of these is combustion taking place?

a) a seed growing
b) a matchstick burning
c) ice melting
d) water boiling in a kettle

Show answer

b) a matchstick burning

2. What is left behind after the combustion of wood?

a) wax
b) sand
c) salt
d) ash

Show answer

d) ash

Associated Words

Words that end in -tion: examination, radiation, animation, association, acceleration, conversation

More words from this list

disobey, frontier, inward, nephew, quest, source, unimpressed, announce

Next steps

How to participate in CREST International Spell Bee

The CREST International Spell Bee (CSB) is conducted in two editions – CREST International Spell Bee - Summer (CSB) and CREST International Spell Bee - Winter (CSBW) – giving students across the globe an opportunity to showcase and enhance their spelling proficiency. Designed for young learners from Senior KG to Class 8, the competition focuses on word-building, pronunciation, and vocabulary enrichment, helping students develop strong linguistic skills.

Steps to Participate:

Step 1: Visit the registration page and complete the registration with your desired subject.

Step 2: After Registration done, do login at www.crestolympiads.com/login.

Step 3: After login, go to dashboard and click on Book slot/Take Exam

Step 4: Schedule your exam date and preferred time.

Step 5: Log in with your credentials on the exam day at the scheduled time and take the exam.

70%