Der Norden ist kalt.

Because Norden is a masculine noun in German, so its nominative singular article is der.

In this sentence, der Norden is the subject, so it is in the nominative case:

• der Norden = nominative
• des Nordens = genitive
• dem Norden = dative
• den Norden = accusative

So Der Norden ist kalt. uses der because the sentence is talking about the north as the subject.

It is in the nominative case.

A simple way to see that:

• Der Norden = the thing being described
• ist = is
• kalt = cold

Since the north is what is cold, it is the subject of the sentence, and subjects are in the nominative in German.

Because der Norden is singular.

The noun Norden refers to one region/direction/concept, so German uses the third-person singular form of sein:

• ich bin
• du bist
• er/sie/es ist
• wir sind
• ihr seid
• sie/Sie sind

So:

• Der Norden ist kalt. = singular
• If the subject were plural, you would use sind.

Because kalt is being used as a predicate adjective, not directly before a noun.

After verbs like sein (to be), adjectives usually do not take adjective endings:

• Der Norden ist kalt.
• Das Wasser ist kalt.
• Die Nächte sind kalt.

But if the adjective comes before a noun, it does take an ending:

• der kalte Norden
• kaltes Wasser
• kalte Nächte

So:

• ist kalt → no ending
• der kalte Norden → adjective ending required

Because it is a noun, and all nouns are capitalized in German.

So:

• der Norden
• das Haus
• die Stadt

This is different from English, where only some nouns are capitalized. In German, noun capitalization is a regular spelling rule.

Yes. Norden can refer to:

• the north as a direction
• the north as a region/part of a country or area

In Der Norden ist kalt., it most naturally refers to the northern region or the north in general.

Related forms you may also see:

• im Norden = in the north
• nach Norden = toward the north
• aus dem Norden = from the north

Yes, there can be.

Norden is the more common noun when talking about the north as a place or region:

• Der Norden ist kalt.

Nord often appears:

• in compounds, like Norddeutschland
• on maps/labels
• in some fixed expressions

For a beginner sentence like this, Norden is the normal choice.

No, this is a very basic and normal German sentence pattern:

Subject + verb + adjective

• Der Norden
  • ist
    • kalt

German main clauses usually place the finite verb in second position, and that is exactly what happens here.

You could change the emphasis with a different element in first position:

• Im Norden ist es kalt.

But Der Norden ist kalt. is completely standard and natural.

No. In this sentence, it must be kalt, not kalte.

That is because kalt comes after ist and works as a predicate adjective, which does not take an ending.

Compare:

• Der Norden ist kalt. ✅
• der kalte Norden ✅
• Der Norden ist kalte. ❌

A helpful approximate pronunciation is:

NOR-den

A few points:

• o is short here
• the r may sound light or be reduced, depending on accent
• the -en ending is common in German nouns and verbs

The whole sentence is roughly: Der NOR-den ist kalt.

Also, w is not involved here, so the pronunciation is fairly straightforward for English speakers.

Yes. German often uses the definite article in places where English may sound a bit more general.

So Der Norden ist kalt. can mean something like:

• a general statement about the north
• a description of the northern region of a place
• a broad fact about climate or weather

This use of der does not always mean one highly specific, sharply identified object. It can also refer to a known region or concept in a natural way.