1) The document is a science worksheet about astronomy and concepts related to the rotation and revolution of the Earth. It contains 10 multiple choice questions about topics like the position of the sun at different times of day, how the Earth's rotation affects day length, the direction locations are facing on Earth, and time zones.
2) The questions cover basic concepts in astronomy like how the tilt of the Earth's axis and its rotation cause changes in sunlight and shadows over the course of a day and year.
3) The worksheet uses diagrams of the Earth from above the North Pole along with illustrations of the sun's position at different locations and times to demonstrate astronomical phenomena like why we experience days and years.