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Rotation

• What do we mean by the Earth's rotation?
• What would be different if the Earth started rotating in the opposite direction?
• Is there a difference between a solar and a sidereal day?
• Why is a sidereal day different from a solar day?
• What kind of day is the one our clocks measure to be 24 hours long?
• Do stars rise exactly at the same time every day?
• If a star rises at 9:00 pm one day, at what time will it rise the following day?

Revolution

• What do we mean by the Earth's revolution?
• Why do we see different stars in summer and in winter?
• What are seasons on Earth due to?
• Why are summer days warmer than winter days?
• What are solstices?
• What are equinoxes?
• What day of the year is the Sun highest/lowest in the sky?
• Why is a sidereal year different from a tropical year?

Precession

• What is meant by the precession of the Earth?
• Will Polaris always be the Earth's North Star?

Parallax

• What is parallax?
• Which objects appear to move more due to parallax, nearby or distant ones?
• Why do we expect to see parallax in the stars' positions over a few months' time?

Astronomy and Timekeeping

• Do we use sidereal days or solar days to keep track of time in our calendars?
• How is astronomy related to the fact that years are 365 days long?
• Which astronomical phenomenon is related to the use of months in our calendar?
• How is astronomy related to the names of the days of the week?