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earth chapt 23

solar system

TermDefinition
Terrestrial planet Mercury, Venus , Earth and Mars - relatively small and rocky
Jovian PLanets Jupiter, Saturn, Uranus and Neptune : huge gas giants
Substances that make up planets Gases, rocks, ices
Nebula A cloud of dust and gas in space.
Nebular theory the solar system was formed by the Sun and planets forming a rotating disk of dust and gases
Planetesimals small irregularly shaped bodies
Mercury about size of earth's moon; has cratered highlands; very dense; very long scarps.
Scarps deep slopes that cut across the plains and craters
Which planet shows evidence of water erosion? Mars
Nebulae commonly contain large amounts of the elements. hydrogen and helium
The _____planets rotate ______than the _____ planets. outer planets/ faster/ inner
The inner planets rotate ____ than the outer planets. slower
The jovian planets contain a large percentage of the gases _________ and ________. hydrogen and helium
The clouds in Venus atmosphere are made of _____. sulphuric acid
The most obvious difference between the terrestrial and jovian planets is _______ size
The atmosphere of Venus is composed primarily of _______. carbon dioxide
What is proportionally more abundant on terrestrial planets than on Jovian planets? Silicate materials
What planet has the largest temp range in the solar system? Mars
How many known satellites does Mars have ? 2
What is the surface of Jovian planets most likely made of ? liquid/gelatinous hydrogen
Name the Jovian planets? Jupiter, Saturn, Uranus, Neptune
Name the terrestrial planets? Mercury, Venus, Earth, Mars
What is the most obvious difference between terrestrial and jovian planets? Size
Other ways terrestrial and jovian planets differ are ________ density, chemical make up and rate of rotation
Substances that make up the interior of planets are divided into three groups which are _____ gases, rocks and ices
The gases that make up the interior of planets are______ hydrogen and helium
The rocks that make up the interior are mostly____ silicate materials and metallic iron
The ices that make up the interior include ammonia, methane, carbon dioxide, and water
Jovian planets have (thick or thin ) atmospheres? thick
Terrestrial planets have (thick or thin) atmospheres? thin
What are asteroids? small rocky bodies
Where are most asteroids located ? between Mars and Jupiter
How long generally is their orbital period? 3-6 years
What is a comet? pieces of rocky and metallic substances held together by frozen gases
What is a coma? a glowing head of a comet
What is a meteroid? small solid particle that travels through space
What is the most famous comet? Halleys
What is the OOrt cloud comet? comets that form a spherical shell around solar system
Created by: mjcostelloe
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