Slide 1

Orbiting Our Sun
• All of the planets in our solar system
revolve around our Sun.
• Today you will investigate the speeds at
which they move around.


Slide 2

Distance From Sun (miles)
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto

36,000,000
67,000,000
93,000,000
142,000,000
484,000,000
887,000,000
1,784,000,000
2,795,000,000
3,675,000,000


Slide 3

circumference  2r
r  93,000,000 miles
Orbital distance

= 2 x 3.14 x 93,000,000 miles
= 584,040,000 miles

Orbital distance per day

= 584, 040, 000 miles
365

= 1,600,000 miles

Orbital speed per hour

= 1, 600, 000
24

mph

= 66,667 mph


Slide 4

The Moon
Orbital period = 28 days

Distance from Earth = 240,000 miles

Orbital distance

= 2 x3.14 x240,000
= 1,507,200 miles

Orbital distance per day

= 1, 507, 200 miles
28

= 53,800 miles
Orbital speed per hour

=

53,800
24

= 2240 mph

mph


Slide 5

radius
x 2 x 3.14
circumference or orbiting distance around the Sun
 number of days or orbital period
distance planet travels per day (Earth day!)

 24
speed of planet in mph (Earth hour!)


Slide 6

Answers
Planet
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto

Orbital Distance Distance per Day
226,080,000
420,760,000
584,040,000
891,760,000
3,039,520,000
5,570,360,000
11,203,520,000
17,552,600,000
23,079,000,000

2,569,000
1,870,000
1,600,000
1,298,000
701,000
517,000
365,000
291,000
255,000

Speed per Hour
107,042
77,917
66,667
54,083
29,208
21,542
15,208
12,125
10,625

(Distances in miles)