Visitor rating
Demonstrates that the yearly seasonal changes are caused by the cyclical change in the tilt of the earth's axis relative to the sun.
Encyclopedia Britannica, 331 N. LaSalle St., Chicago, IL 60610, Phone: (312)347-7159, Toll-free: 800-323-1229, Fax: (312)294-2104, URL: http://www.britannica.com
Available on VHS
Running time 11 minutes.
Copyright © 2024 Net Industries - All Rights Reserved