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This Concept Map, created with IHMC CmapTools, has information related to: Earth and Venus, Diameter Venus 12 104 km, Density Venus 5243 kg/m^3, Surface composition Earth Nearly 71% of surface covered with water, Size Similar Diameter, Greenhouse effect Resulting in Atmospheric composition: mainly C02, Terrestrial But have different Orbital Peroids, Moons Earth The moon, Moons Venus No moons, Diameter Earth 12 756 km, Volcanic Activity Leads to Greenhouse effect, Volcanic Activity Venus Hot-spot volcanism, Hot-spot volcanism Due to One plate crust (light and flaky) = flake tectonics, Greenhouse effect Resulting in differences in Atmosphere, Atmosphere Venus 2 convection cells, Volcanic Activity Earth Plate tectonics, activity, One plate crust (light and flaky) = flake tectonics Different Plate tectonics, activity, Atmosphere Earth Water clouds, Atmosphere Earth 6 Convection cells, Focus Question: How are Earth and Venus similar. How are they different and why? They are both Terrestrial, Similar core structure Venus May have no magnetic field