How large are the objects in the solar system? Let’s view them to scale –Different scale than text: sizes and distances both on same scale –Sun: 1.39 x.

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Presentation transcript:

How large are the objects in the solar system? Let’s view them to scale –Different scale than text: sizes and distances both on same scale –Sun: 1.39 x 10 6 km in diameter, represented by a volleyball = 8.5 inches in diameter –Scale is about 1 inch for every km (~ miles) Using your intuition, GUESS how big the Earth is on this scale! –Softball, tennis ball, golf ball, marble, peppercorn/BB?

Relative Sizes of Planets

How far away are the objects in the solar system? If we keep using the SAME scale, GUESS how big a model of the whole solar system will be – –Will it fit on a table? Inside the room? Inside the building? Mercury is almost 10 yards from the Sun in this model! –This is 30 feet! –Let’s go into the hall to see how big the model has to be!

Map of our Scale Model

Scale of the Solar System

Scale Model of the Solar System The Sun (volleyball) Mercury (Pinhead at 10 yds)

Scale Model of the Solar System Venus (peppercorn at 18 yds) clouds Beneath the clouds

Scale Model of the Solar System Earth (peppercorn at 25 yds) Moon (pinhead 2.4 inches away).

Scale Model of the Solar System Mars (Pinhead at 39 yards)

Scale Model of the Solar System Asteroids (A few thousand specks of dust between 50 and 75 yards away from the volleyball)

Scale Model of the Solar System Jupiter (A ball bearing at 132 yards)

Scale Model of the Solar System Saturn (hazelnut at 242 yards)

Scale Model of the Solar System Uranus and Neptune (coffee beans at 487 and 762 yards)

Scale Model of the Solar System Pluto & Charon (small pinheads at 1000 yds)

Relative Sizes of Planets

Nearest Star The nearest star (other than the Sun) is 4.28 light years away ( AU)! GUESS how far this would be in our scale model? –The next volleyball-sized object is ~ yards or 3900 miles away. This is the approximate distance between La Crosse, WI and Cardiff, Wales.