A month is a unit of time that is approximately based on the period of the moon's phases. Most modern calendars are based on the concept of the month, and it is used to divide the year into smaller, more manageable segments.
Types of Months
There are two main types of months:
Solar Months: These are based on the position of the Earth in relation to the sun. The most commonly used solar calendar is the Gregorian calendar, which has 12 months in a year.
Lunar Months: These are based on the phases of the moon. The lunar month is approximately 29.5 days long, and lunar calendars are used in some cultures for religious and agricultural purposes.
The number of days in a month varies depending on the specific month and the calendar system being used. In the Gregorian calendar, the months have the following number of days:
From Molecules to Organisms: Structures and Processes
Students who demonstrate understanding can:
Construct an argument that plants and animals have internal and external structures that function to support survival, growth, behavior, and reproduction.