Earth orbits the sun, yet the sun appears to move through the sky. For example, the sun always appears to rise in the east and set in the west. What reasoning explains this apparent motion of the sun?

Earth, the sun, and the moon all rotate. The table below lists how long it takes each one to complete one rotation.

While Earth revolves around the sun, Earth is also rotating. About how many rotations does Earth complete as it orbits once around the sun?

Scientists use models to represent or explain things in the natural world. Why are models useful for the study of the movements of the sun, the moon, and Earth?

Scientists describe Earth as having an imaginary line through it from pole to pole, about which Earth spins. What is this imaginary line called?

A person living on Earth sees daytime and nighttime every 24 hr. Which of these is responsible for changes from daytime to nighttime on Earth?

Caroline looks up at the night sky on a clear night. She is searching for patterns of stars in the sky. What is Caroline looking for?

Hundreds of years ago, people observed constellations in the night sky. How were constellations originally named and identified?

We know that each year has four seasons: winter, spring, summer, and fall. Why do we have seasons?