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The Solar System

The Solar System

 The terrestrial planets are planets that are small and rockyMercury, Venus, Earth, and Mars.

 The Jovian planets are the huge gas giantsJupiter, Saturn, Uranus, and Neptune.

 Pluto does not fit into either the Jovian or the terrestrial category.

Slide 2

Orbits of the Planets

Orbits of the Planets

Slide 3

The Solar System

The Solar System

 Size is the most obvious difference between the terrestrial and Jovian planets.

 Density, chemical makeup, and rate of rotation are other ways in which the two groups of planets differ.

Slide 4

Planetary Data

Planetary Data

Slide 5

23.1 The Solar System

23.1 The Solar System

 The Interiors of the Planets

The substances that make up the planets are divided into three groups: gases, rocks, and ices.

 The Atmosphere of the Planets

The Jovian planets have very thick atmospheres of hydrogen, helium, methane, and ammonia.

By contrast, the terrestrial planets, including Earth, have meager atmospheres at best.

Slide 6

Scale of the Planets

Scale of the Planets

Slide 7

23.1 The Solar System

23.1 The Solar System

 Nebular Theory

A nebula is a cloud of gas and/or dust in space.

According to the nebular theory, the sun and planets formed from a rotating disk of dust and gases.

Slide 8

23.1 The Solar System

23.1 The Solar System

 Planetesimals

Planetesimals are small, irregularly shaped bodies formed by colliding matter.

Slide 9

Formation of the Universe

Formation of the Universe

Slide 10

Planetary Composition, Distance from the Sun, and Melting Point

Planetary Composition, Distance from the Sun, and Melting Point

Slide 11

The Terrestrial Planets

The Terrestrial Planets

 Mercury is the innermost and second smallest planet; it is hardly larger than Earths moon.

Mercury has cratered highlands, much like the moon, and vast smooth terrains that resemble maria.

Mercury has the greatest temperature extremes of any planet.

 Surface Features

 Surface Temperatures

Slide 12

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