Our Solar System ©Mark Place, 2009-2010 www.LearnEarthScience.com.

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Presentation transcript:

Our Solar System ©Mark Place, 2009-2010 www.LearnEarthScience.com

The total mass of all the asteroids is less than that of the Moon. rocky objects with round or irregular shapes lie in a belt between Mars and Jupiter The total mass of all the asteroids is less than that of the Moon.

only visible when they are close to the sun

shooting stars

The Planets

Draw a line across the table between the terrestrial and jovian planets and label.

Which are more dense? Jovian or terrestrial

Which have more moons ? Jovian or terrestrial

Which have longer periods of revolution? Jovian or terrestrial

Which are larger in size on average ? Jovian or terrestrial

Which planet has the longest day? Venus

Which planet has the longest year? Neptune

How are the orbits of the planets described? slightly, eccentric ellipse eccentricity website

Mercury Which planet has the least perfectly circular orbit? (most eccentric = most oval shaped) Mercury

Venus Which planet has the most perfectly circular orbit? (least eccentric = least oval shaped) Venus

Calculate the eccentricity of the ellipse below: length of major axis Formula: eccentricity = distance between foci length of major axis

When does a planet move slowest in its orbit? When furthest from Sun When does a planet move fastest in its orbit? When closest to Sun

Kepler's Second Law Area A = Area B Area C eccentricity website

Explain the difference between the geo- and helio-centric models of the solar system. Helio-centric Geo-centric Earth- Centered Earth DOES NOT MOVE!! Sun- Centered