Η φυσαλίδα αέρα προκαλεί ρωγμή.

Η is the feminine singular definite article, so it means the.

It matches φυσαλίδα, which is a feminine singular noun. So:

• η φυσαλίδα = the bubble

Greek articles change for gender, number, and case, unlike English the, which always stays the same.

Φυσαλίδα is the nominative singular form of the noun φυσαλίδα.

In this sentence it is the subject, the thing doing the action:

• Η φυσαλίδα αέρα = the air bubble

Because it is the subject, Greek uses the nominative form.

Because αέρα is the genitive singular of αέρας.

Greek often uses the genitive where English uses of. So:

• φυσαλίδα αέρα = literally bubble of air
• natural English: air bubble

So αέρα here shows what kind of bubble it is.

Yes. That is exactly how Greek commonly expresses this idea.

Structure:

• φυσαλίδα = bubble
• αέρα = of air

So Greek says bubble of air, where English usually prefers air bubble.

This is a very common pattern in Greek:

• ποτήρι νερού = glass of water
• μπουκάλι κρασιού = bottle of wine

Προκαλεί is the 3rd person singular present tense form of the verb προκαλώ, meaning to cause.

So:

• προκαλώ = I cause
• προκαλείς = you cause
• προκαλεί = he/she/it causes

In this sentence, the subject is singular:

• Η φυσαλίδα αέρα προκαλεί...
• The air bubble causes...

Because προκαλώ belongs to a group of verbs whose present-tense forms often show this pattern.

For this verb:

• προκαλώ = I cause
• προκαλείς = you cause
• προκαλεί = he/she/it causes

So the -εί ending here marks the he/she/it form in the present tense.

Also notice the accent: προκαλεί. The accent is important in written Greek.

Ρωγμή is in the accusative singular, which is the normal case for a direct object in Greek.

It is the thing being caused:

• subject: Η φυσαλίδα αέρα
• verb: προκαλεί
• object: ρωγμή

For this noun, the accusative singular looks the same as the nominative singular:

• η ρωγμή = the crack
• βλέπω ρωγμή = I see a crack

So even though the form looks the same, its role in the sentence is different.

Because Greek, like English, does not always need an article.

Here, ρωγμή is indefinite:

• προκαλεί ρωγμή = causes a crack

If you said προκαλεί τη ρωγμή, that would mean causes the crack, referring to a specific crack already known from context.

So the lack of an article here gives the sense of a crack, not the crack.

Yes. Greek word order is more flexible than English word order.

The neutral, straightforward order here is:

• Η φυσαλίδα αέρα προκαλεί ρωγμή.

But Greek can sometimes move words around for emphasis, style, or context. For example, you might see the object placed earlier in some contexts.

Still, for a learner, this sentence is a good standard pattern:

• subject + verb + object

A simple pronunciation guide is:

ee fee-sa-LEE-tha A-e-ra pro-ka-LEE rogh-MEE

A few helpful notes:

• η sounds like ee
• δ in φυσαλίδα sounds like the th in this
• αι in προκαλεί sounds like ee
• γμ in ρωγμή can be a bit tricky; the γ is a soft Greek sound before μ

The stressed syllables are:

• φυσαλίδα
• αέρα
• προκαλεί
• ρωγμή

It can be understood as either, depending on context, but most naturally it sounds like a general statement or scientific/technical fact:

• An air bubble causes a crack
• The air bubble causes a crack

Greek present tense often covers both:

• something happening now
• a general truth
• a repeated or typical action

So without more context, this sentence can easily be read as a general statement.

Not necessarily.

Greek often omits the indefinite article where English uses a/an. So both can be possible, depending on style and emphasis.

• προκαλεί ρωγμή = causes a crack
• προκαλεί μια ρωγμή = causes a crack / causes one crack

Using μια can make the noun feel a bit more explicitly indefinite or slightly more emphatic. In many contexts, leaving it out is perfectly natural.

A very useful pattern is:

[definite article + subject noun] + [genitive noun if needed] + [verb] + [object]

In this sentence:

• Η φυσαλίδα = the bubble
• αέρα = of air
• προκαλεί = causes
• ρωγμή = a crack

So the full pattern is:

Η φυσαλίδα αέρα προκαλεί ρωγμή.

You can build similar sentences such as:

• Η πίεση προκαλεί ζημιά. = The pressure causes damage.
• Η ζέστη προκαλεί πρόβλημα. = The heat causes a problem.