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Small solar system objects How do scientists classified small objects in the solar system.

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Presentation on theme: "Small solar system objects How do scientists classified small objects in the solar system."— Presentation transcript:

1 Small solar system objects How do scientists classified small objects in the solar system

2  The terms meteor, meteorite, and meteoroid, come from the Greek root meteoros which means “high in the air”.  What are the major categories of small objects in the solar system? Dwarf planets, asteroids, comets, and meteoroids.  What do all the objects in those four categories have in common? They all orbit the sun.  In what areas are they found? Asteroid belt,(between Mars and Jupiter),Kuiper belt(100 times Earth’s distance from the sun) and Oort cloud(1000 times the distance between the Sun and Neptune).

3 Define dwarf planets  Dwarf planets are relatively new category of objects in the solar system. They were developed in  As astronomers learn more about the solar system new categories had to be developed.  What solar system object prompted astronomers define dwarf planets? Pluto  Students page 164 figure 2 answer the question should Pluto be considered a planet or not.

4 Comets  What is a comet made of? Ice, dust and small rocky particles.  What are the main parts of a comet? the nucleus, the comma, and the tail.  Where is the nucleus located? Deep within the comet.  What is comet’s tail like? Most they have two tails, a gas tail and a dust tail.  In which direction – the gas tail point? Away from the sun.  The dust tail? along the path the comet has taken.  Coma is the outer layer of gas and dust formed when released by clouds. It si in the comet’s head.

5 asteroids  Went out of most asteroids found in space? In the asteroid belt between Mars and Jupiter.  What asteroids made of? Rock.  What is an asteroids shape? Irregular  Why? They are left over pieces of the early solar system that never came together to form the planet.  Why aren’t asteroids classified as dwarf planets? They are too small and too numerous.  Students page 166 apply it: 1,2,3,4.5

6 meteoroids  Meteoroids chunks of rock or dust smaller than asteroids.  When a meteoroid enters Earth’s atmosphere friction with the air creates heat and producers streak of light. This streak is a meteor.  Meteoroids that are large do not burn up completely. Meteoroids that pass through the atmosphere and are found on the Earth’s surface are called meteorites. The impact can create craters.  Students page 167 assess your understanding, 1a,1b,1c.

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