Session Date
Lesson Topic
The Solar System - The Distance Scale
Lesson Outline
Even though the objects in the Solar System are those closest to us in the Universe, the distances to the farthest ones are nevertheless inconceivable. We started class by contemplating 'The Pale Blue Dot', the first-ever image taken from beyond Moon's orbit of Earth from the Voyager 1 spacecraft. At the time, Voyager 1 was at Pluto's orbit. After finding out the distances to the eight planets plus Pluto, we then re-scaled those distances to correspond to the same scale as if the school were the Sun and Jared's home were Pluto. If Jared's house is at 10km from the school, then the four inner rocky planets all lie within 400 meters (approximately 400 yards) from the school, and the gas giants fill out the rest of the space. No wonder when Voyager 1 looked back at the Earth it was a barely visible dot!
Assignment
Start looking at the relative sizes of the planets
Session Minutes
90
Minutes Student Attended
90
Lesson Comments
Jared was visibly tired today, but appeared to be eager to learn stuff about the Solar System. So I decided to engage him in calculations, to keep him alert. He cooperated wonderfully, and is - as I have noted before - very quick with numbers. And because we're talking distances in space, these numbers are in scientific notation with big exponents. Yet he handles them very well, almost intuitively. I think when we finally got to the gist of the exercise (the relative size of the Solar System with respect to distances on Earth) he really perked up, and even offered an idea for his own homework!
Session Hours
1.50
Hours Attended
1.50
Entry Status
Review Status
Student Name(s)