Chapter 23: Touring our Solar System

Most asteroids lie between the orbits of:

Planets were originally formed when bits of matter collided and clumped together to form ___

Identify Part B:

Which of the following is true about comets?

Based on it's diameter of approximately 2300 km, ___ is the smallest planet in the solar system

Which of the following is NOT considered a terrestrial planet?

The fact that Mercury has no atmosphere is evidence that it:

One planet, ___, cannot be classified as either a terrestrial or Jovian planet.

Which of the following is NOT a source of meteoroids:

The nucleus of Halley's comet is approximately:

The orbits of most ___ lie between Mars and Jupiter

What are all of Saturn's rings made of?

The densities of Jovian planets are:

Identify Jupiter's largest moons left to right:

Identify part A:

Pluto's unusual orbit causes it to occasionally travel inside the orbit of ____

Because of its many similarities to Earth, ___ is referred to as "Earth's twin".

Some __ are thought to be fragments of the moon or Mars ejected when an asteroid impacted them

Briefly describe the Nebular Theory:

How does the diameter of the terrestrial and Jovian planets compare?

Which of the Jovian planets have rings?

Why is Pluto referred to as Planet X?

One reason that life as we know it is unlikely to exist on Venus is because:

Scientists have been able to estimate the age of our solar system by dating:

The period of rotation for any of the Jovian planets is ____ than Earth's period of rotation.

According to scientists, the solar system formed from:

Which planet has the lowest surface temps and an atmosphere comprised mostly of nitrogen?

____ satellite system resembles a miniature solar system with at least 28 moons.

Formation of the solar sys. from a rotating disk of dust and gases is described by the _ theory

____ are pieces of rocky and metallic materials held together by frozen gases

A meteoroid that reaches Earth's surface is called a(n)

Identify Part C:

Which is 1 difference between the way terrestrial and Jovian planets were formed?

The total mass of all asteroids is estimated to be only 1/1000 that of ______

The largest of the terrestrial planets:

The ring that tends to be thicker than the main rings is labeled:

Which of the following is true about asteroids:

Comets with long orbital periods form a spherical shell around the solar system called the ____

The 2 rings that are Saturn's main, brightest rings are labeled ___ and ___

The Kuiper Belt is the region beyond Neptune containing:

Which planet has an axis of rotation parallel with the plane of its orbit?

When viewed from Earth, Mars appears to change colors. This most likely happens because:

How does the atmospheres of Terrestrial and Jovian Planets differ?

Identify Part D:

Some scientists believe that on ____, a thick water-laden atmosphere once surrounded the planet

What is the mass of Jupiter?