Objective:
To show how distance affects a planet’s period of revolution around the sun.
Standards:
Objects in the Sky (sky object properties, locations, and movements) and Earth in the Solar System (position, properties of sun, earth, its moon, and the other planets).
Materials:
a yardstick and a ruler.
Procedure:
Hold the yardstick and ruler vertically side by side on the ground or a flat table top.
Slightly lean both the yardstick and ruler forward so that they fall in the same direction.
Release both at the same time.
Science behind It:
The shorter ruler will hit the surface first because it had less distance to fall. This is similar to the movement of the planets around the sun. Mercury is the shortest distance from the sun and only takes eighty eight Earth days to orbit the sun. Pluto is the farthest planet from the sun and therefore has the longest period of revolution, 248 Earth years.
Tags: Ascii, Bidi, Cambria, Charset, Courier New, Direction Release, Distance From The Sun, Div, Earth Days, Earth In The Solar System, Earth Moon, Eighty Eight, Family Auto, font definitions, Footer, Lt, Mercury, Mso, Orphan, Paper Source, Pitch, Planet Sun, Planets Around The Sun, Planets Mercury, Pluto Planet, Position Properties, Props, Ruler, sans serif, Sky Object, Style Definitions, Style Name, Style Type, Sun Earth, Sun Mercury, Sun Moon, Time Science, Unicode, Yardstick
