The month
The Moon's cycle gives the month.
A longer unit
A day is the natural cycle of the Sun. The Moon's phases repeat after a longer time.
What unit of time can be based on the Moon's cycle?
What this lesson covers
The idea
The Moon takes about 29.5 days to cycle through all its phases, and this cycle is the basis for the month as a unit of time.
A longer unit
A day is the natural cycle of the Sun. The Moon's phases repeat after a longer time.
What unit of time can be based on the Moon's cycle?
- The month
- The hour
- The minute
A cycle of phases
Press Next step.
The month
The Moon takes about 29.5 days, nearly a month, to cycle through all its phases. This cycle is the basis for the month as a unit of time.
The Moon takes about 29.5 days to go through all its phases. This cycle is the basis for the month.
Notes
Month comes from the Moon's cycle of about 29.5 days.
Check yourself
About how many days does the Moon take to cycle through all its phases?
Answer: 29.5 days
About 29.5 days, nearly a month.
The cycle of the Moon's phases is the basis for the …
Three natural cycles used to keep time are day and night, the Moon's phases and …
The Moon's cycle is …
- day. The day comes from the Earth's rotation.
- year. The year comes from the seasons.
- month — correct. Yes!
- the seasons — correct. Yes!
- the tides only. The seasons are the third cycle.
- the colours. The changing seasons are the third cycle.
- shorter than a day. It takes nearly a month.
- longer than a day — correct. Yes!
- the same as a day. It takes nearly a month.