TOC: The Nine Planets & Other Space Objects12/8/12I. Starter:Calculate the density of an object that has a

volume of 75ml and a mass of 450g.

Next, calculate the density of this object if its volume changed to 900.

II. Practice:The Nine Planets & Other Space Objects Write Planets Notes in this section

Solar System is divided into 2 parts

Inner Planets: Terrestrial Planets

Outer Planets: Gas Giants

Terms to Remember !!!

1 Revolution = 1 trip around the sun = 1 year

1 Rotation = 1 complete spin = 1 day

Terrestrial Planets

Mercury Venus Earth Mars

Terrestrial Planets Mercury - closest to sun

Weight 38% of what you weigh on Earth (less gravity)

Year – 1 revolution is 88 days long!!! (Birthday every 88 days!!!)

Day – 1 rotation takes 58 earth days Diameter 4,879 km

Venus - Second from sun Weight 91% of what you weigh

on Earth (less gravity) Year – 1 revolution is 244 days,

17 hours!!! Day – 1 rotation takes 243 earth

days Diameter 12,104 km

Earth - third from sun Weight 100% of what you weigh on

Earth Year – 1 revolution is 365 days, 6

hours!!! Day – 1 rotation takes 24 hours, 56

minutes Diameter 12,756 km

Mars - fourth from sun Weight 38 % of what you weigh

on Earth Year – 1 revolution is 687 days!!! Day – 1 rotation takes 24 hours,

37 minutes Diameter 6794 km

Gass Giants

Jupiter Saturn Neptune Uranus

Gas GiantsJupiter - fifth from sun

Weight 236 % of what you weigh on Earth

Year – 1 revolution is 11 years, 313 days!!!

Day – 1 rotation takes 9 hours, 50 minutes

Diameter 142,984 km

Saturn - sixth from sun Weight 92 % of what you weigh

on Earth Year – 1 revolution is 29 years,

155 days!!! (29 years before you have a birthday!!!!!!!)

Day – 1 rotation takes 10 hours, 30 minutes

Diameter 120,536 km

Rings- made of icy particles

Uranus - seventh from sun Weight 89 % of what you weigh

on Earth Year – 1 revolution is 83 years,

274 days!!! Day – 1 rotation takes 17 hours,

14 minutes Diameter 51,118 km

Neptune- eighth from sun Weight 112 % of what you weigh on

Earth Year – 1 revolution is 163 years, 263

days!!! Day – 1 rotation takes 16 hours, 7

minutes Diameter 49,528 km

Planet sizes (to scale)

What do you notice at first glance about the difference of terrestrial and gas giants?

Terrestrial Versus Gas Giant

Terrestrial Gas Giant

Location in the Solar System

Close to Sun Far from Sun

Size (or radius) Small Large

Density Very Dense (sink) Not Dense (float)

Structure Solid Surfaces & Cores

Gassy Surfaces/ Solid Core

Chem Composition Heavy Elements (Metals)

Hydrogen & Helium

Atmosphere Thin Thick

Exterior Warm Cold

Rotation Slow Fast

Moons Few Many

Rings No Yes

Moons Satellites or natural bodies

hat revolve around a larger body All planets have moons

except Mercury and Venus

Jupiters Moons - Galilean Moons

discovered in 1610 by Galileo Io – most volcanic object in solar

system Europa - may have liquid water

beneath its icy surface Ganymede - largest of the four, larger

than Mercury Callisto – third largest moon in solar

system, made of rock and ice

Comets

Small body of ice, rock, and cosmic dust loosely packed together

When comet comes close enough to the sun, it heats up and gives off gas and dust in the form of a tail

Elliptical orbit around the sun

Asteroid Small rocky bodies

that revolve around the sun

Up to 900 km in diameter

Mostly spherical Found in between

Mars and Jupiter in the Asteroid Belt

Meteoroid

Small rocky boy that revolves around the sun

Smaller than asteroids (pieces of asteroids)

Becomes a Meteorite when it hits the surface of Earth

Shooting Star- Meteors are bright streaks of light that occur when a meteoroid or comet burns in the atmosphere

Meteor Showers - when Earth passes through dusty debris that comets leave behind

III. Application:

Complete and glue in your foldable into this section.

IV. Connection

Why is studying other planets important ? How does it help us learn more about our planet?

V.Exit

Summarize everything you learned. Include any questions you may still have.