Let’s look at some idioms for small units of time.
An hour is made up of 60 minutes. There are 24 hours in a day.
FUN FACT – The ‘h’ in hour is silent. There are many words where the ‘h’ at the beginning is silent.
An minute is made up of 60 seconds. There are 60 minutes in an hour.
A moment is a very short amount of time. You may have heard the phrase ‘wait a moment’. This means to wait a short amount of time. You can also say ‘wait a minute’ or ‘wait a sec(ond). They all mean the same thing.