Learn Hardcore Norwegian: Temperaturen faller raskt etter solnedgang, så ungdommen henter skjerfene sine. - The temperature drops quickly after sunset, so the youth fetch their scarves.

faller is the present tense form of the verb falle (“to fall”). In Norwegian, you form the present tense by adding -r (for most verbs) to the infinitive. So:
• å falle → faller (“is falling” or “falls”).
It describes an action or change happening right now or generally.

Why is raskt used instead of rask?

raskt is an adverb modifying the verb faller. Adjectives like rask (“fast”) change to adverbs by adding -t (in neuter form) or -t/-tt for many adjectives. So:
• rask (adj.) → raskt (adv.)
It tells us how the temperature falls: it falls quickly.

What does etter solnedgang literally mean and how does it compare to etter at solen har gått ned?

• etter solnedgang literally = “after sunset.”
• etter at solen har gått ned = “after the sun has gone down.”
Norwegian often uses the noun phrase etter solnedgang for brevity. Both are correct, but the first is more idiomatic and compact.

What is the difference between ungdom and ungdommen?