UEN Security Office
Technical Services Support Center (TSSC)
Eccles Broadcast Center
101 Wasatch Drive
Salt Lake City, UT 84112
(801) 585-6105 (fax)
Main Curriculum Tie:
For each group
Background For Teachers:
A star is a ball of hot, burning gases. The sun is the closest star to Earth (about 150,000,000 km/93,000,000 miles) away. Therefore, it looks bigger and brighter to those on Earth than other stars.
Earth spins on an imaginary line called an axis. A complete rotation takes about 24 hours (one day). The part of Earth facing the sun has daylight; the part facing away from the sun has night.
Earth revolves around the sun as it rotates on its axis.
One complete orbit, or revolution, of Earth around the sun takes
about 365 days (one year). It actually takes 365 1/4 (365.25) days to revolve
around the sun. One-fourth of a day is equal to six hours. If you take a
24 hour day and divide it by six, you get four. Therefore, and extra day
is added to the calendar every four years. Every fourth year is a leap year,
The moon’s diameter is about one-fourth that of Earth’s.
Intended Learning Outcomes:
Invitation to Learn
Where is the sun located in the solar system?
How big is Earth, moon, and sun?
800,000 divided by 2,000
400" divided by 36" gives you about 11 yards
How many people have walked on the moon? (Twelve astronauts have walked on the moon, the last in 1972.)
Here are the names of those astronauts listed chronologically by the date of their walk.
Created Date :