This is an activity about the rotation of the Moon. Learners use a penny and a quarter to model that the Moon does indeed spin on its axis as it orbits the Earth. They find that the Moon keeps the same face toward the Earth, but receives... (View More) illumination from the Sun on all sides in turn. This activity is part of Explore! Marvel Moon, a series of activities developed specifically for use in libraries. (View Less)

Learners model how Earth's tilt creates the seasons. They use their bodies to review the Earth's daily motions before investigating the reason for Earth's seasons in this kinesthetic exploration. The motion of the Earth about its axis (rotation) and... (View More) in orbit around the Sun (revolution) is related to the appearance of the sky over the course of the day and year. Next they model that if the Earth's tilt was not stabilized by Moon, Earth's axis would slowly wobble between straight up (0° tilt) to nearly on its side (80° tilt). The resulting seasonal extremes would be unfavorable for life. Note that this activity is appropriate for children who are able to explore the geometry of Sun-Earth-Moon relationships in three dimensions. This activity is part of Explore! Marvel Moon, a series of activities developed specifically for use in libraries. (View Less)

This is a website about asteroids and comets. Learners can play a physics-based asteroid game, learn about how backyard astronomers are contributing to asteroid research, or simulate an asteroid impact using a Google Earth Impact simulation.... (View More) Includes background information about comets and asteroids and links to multimedia resources. (View Less)