Kum saati geri sayımı gösteriyor.

Not here. In kum saati, the -i is part of a very common Turkish noun-compound pattern.

• kum = sand
• saat = clock / hourpiece
• kum saati = hourglass

This type of compound often puts a 3rd-person possessive-looking ending on the second noun. So kum saati is the normal dictionary form for hourglass.

So in this sentence, kum saati is the subject, not an object. The -i in saati is part of the compound itself, not a separate case ending.

It is an indefinite noun compound in Turkish.

The pattern is usually:

• first noun: bare form
• second noun: takes a compound ending

So:

• elma suyu = apple juice
• yatak odası = bedroom
• kum saati = hourglass

English often uses noun + noun compounds too, but Turkish forms them differently. A learner may expect something like kum saat, but that is not how Turkish normally says hourglass.

Literally, it means something like backward counting or counting back.

• geri = back / backward
• sayım = counting / count

Together, geri sayım means countdown.

So even though the full meaning is already known to you, it helps to see that Turkish builds this idea quite transparently from smaller parts.

Because it is the direct object of gösteriyor, and here it is marked with the accusative ending.

• base form: geri sayım
• accusative form: geri sayımı

So the sentence treats the countdown as a specific thing being shown.

This is a very common Turkish pattern:

• Kitap okuyor. = He/she is reading a book. / reading books.
• Kitabı okuyor. = He/she is reading the book.

Likewise:

• geri sayım gösteriyor would sound more indefinite or incomplete in many contexts
• geri sayımı gösteriyor = it is showing the countdown / a specific countdown

No. They just happen to look similar.

• In kum saati, the -i belongs to the noun compound.
• In geri sayımı, the -ı is the accusative case ending on the object.

That is an important distinction, because Turkish uses endings for different jobs, and sometimes the forms look alike.

Gösteriyor is the present continuous / progressive form of göstermek.

Structure:

• göster- = show
• -iyor = progressive
• implied he/she/it subject agreement

So gösteriyor means:

• is showing
• sometimes, depending on context, shows

Turkish often uses this form for things happening right now, but also for what a device or screen is currently displaying.

Because Turkish often leaves the subject pronoun out when it is clear from context.

In English, you usually need it:

• It is showing the countdown.

In Turkish, the verb ending and the context are usually enough:

• Kum saati geri sayımı gösteriyor.

Since kum saati is already stated as the subject, there is no need for an extra pronoun.

Yes. This is a very normal Turkish word order:

Subject + Object + Verb

• Kum saati = subject
• geri sayımı = object
• gösteriyor = verb

So the sentence follows the common Turkish pattern of putting the verb at the end.

Turkish word order is flexible, but this version is neutral and natural.

Yes, Turkish allows rearrangement for emphasis or contrast, though not every version sounds equally neutral.

For example:

• Kum saati geri sayımı gösteriyor. = neutral
• Geri sayımı kum saati gösteriyor. = emphasizes the countdown
• Gösteriyor kum saati geri sayımı. = possible in special contexts, but much less neutral

For learners, the given order is the best one to treat as the standard form.

Because Turkish does not have articles like English the and a/an.

Whether something means an hourglass, the hourglass, a countdown, or the countdown depends on context and grammar.

A few clues help:

• bir can mean a/an or one
• the accusative often signals a specific/definite object

So in this sentence:

• kum saati could be understood from context as the hourglass or simply an hourglass
• geri sayımı sounds specific, so it is more like the countdown

Yes. Göstermek is broader than just visually displaying something.

Depending on context, it can mean:

• show
• display
• indicate
• point to

In this sentence, if the hourglass is part of a screen, interface, or symbolic display, gösteriyor can easily mean is showing / is indicating the countdown.

A more clearly indefinite version could be:

Bir kum saati bir geri sayım gösteriyor.

But in real Turkish, that may sound a bit unnatural unless you really want to emphasize one hourglass and one countdown.

Turkish often avoids overmarking indefiniteness where English would use a/an. So the original sentence may still be the most natural choice in context.

Because it has no plural ending.

• singular: kum saati
• plural: kum saatleri

So this sentence is talking about one hourglass.

Turkish only adds the plural when needed. If you wanted hourglasses, you would normally use -ler/-lar:

• Kum saatleri geri sayımı gösteriyor. = The hourglasses are showing the countdown.

Yes. The base verb is göstermek = to show.

It is historically related to görmek = to see, though as a learner the most useful point is simply to memorize:

• görmek = see
• göstermek = show

Then:

• görüyor = sees / is seeing
• gösteriyor = shows / is showing

That extra -ster- is part of the verb stem here, so you should learn göstermek as its own verb.

Grammatically, yes, but it would usually feel incomplete unless the context already makes clear what it is showing.

• Kum saati gösteriyor. = The hourglass is showing / indicating.
• Kum saati geri sayımı gösteriyor. = The hourglass is showing the countdown.

Since göstermek often takes an object, listeners usually expect one unless the situation makes it obvious.