Provides information about the seasons, discussing why they happen, explaining why they are important, and looking at the characteristics of spring, summer, autumn, and winter.
Examines different aspects of time and how we measure it, including seasons, sundials, clocks, local and Greenwich mean time, the prime meridian, time zones, atomic clocks, months, years, and more.
Explains why the Earth experiences day and night; looks at the sun's path across the sky, shadows, and the sky at night; and provides information about other related topics such as time zones, moon phases, and eclipses.
Provides information about time, explaining what it is, looking at how it is measured, examining various types of timekeepers, and discussing the source of the names of months and days.
