Ballen beveger seg.

Ballen means the ball. The ending -en is the common way to make a masculine noun definite in Norwegian.

So:

• en ball = a ball
• ballen = the ball

In this sentence, the speaker is talking about a specific ball, not just any ball.

In Norwegian, the definite article is often attached to the end of the noun instead of being a separate word in front.

So English:

• the ball

becomes Norwegian:

• ballen

This is very common in Norwegian.

Beveger is the present tense of the verb å bevege seg.

So:

• å bevege seg = to move
• beveger seg = moves / is moving

Norwegian present tense is often made by adding -r to the verb stem.

Seg is a reflexive pronoun. In this sentence, bevege seg is the normal way to say move oneself / move.

So beveger seg is best learned as a unit:

• å bevege seg = to move

Even though English usually just says move, Norwegian often uses this reflexive structure.

Yes, very often it is. In many cases, you should think of å bevege seg as the standard verb phrase for to move.

For example:

• Han beveger seg raskt. = He moves quickly.
• Ballen beveger seg. = The ball is moving.

So although seg literally looks like oneself, learners usually do best by memorizing bevege seg together.

It can mean both, depending on context.

Norwegian present tense often covers both:

• the ball moves
• the ball is moving

If you only see the sentence by itself, the ball is moving is often the most natural interpretation, but context decides.

The basic order here is:

• Ballen = subject
• beveger = verb
• seg = reflexive pronoun

So the pattern is basically Subject + Verb + Reflexive pronoun.

This is a normal Norwegian main-clause word order.

Yes, but the meaning changes.

• En ball beveger seg. = A ball is moving.
• Ballen beveger seg. = The ball is moving.

Use en ball when the ball is indefinite or being mentioned for the first time. Use ballen when it is a specific ball already known from the situation or context.

A rough English-friendly guide is:

• Ballen ≈ BAHL-len
• beveger ≈ beh-VEH-ger
• seg ≈ sigh or say depending on accent

A few helpful notes:

• a in ballen is broader than in English ball
• g in beveger is pronounced
• seg has different pronunciations in different dialects, so you may hear some variation

If you are learning Bokmål with an eastern Norwegian pronunciation, you will hear something close to bahl-en beh-VEH-ger sai.

It is capitalized only because it is the first word of the sentence.

In Norwegian, ordinary nouns are not capitalized the way they are in German.

So in the middle of a sentence, it would normally be written ballen, not Ballen.

Not in the same way. Seg is used for third person reflexive meaning, and it can refer to:

• himself
• herself
• itself
• themselves

So in this sentence, seg refers back to ballen, and the meaning is basically itself.

That is much simpler than English in this respect.

Yes, it is perfectly natural. It is a simple, correct sentence meaning that the ball is in motion.

It is the kind of sentence you might see in a beginner textbook because it shows several useful features at once:

• a definite noun: ballen
• a present-tense verb: beveger
• a reflexive construction: seg