A Martian meteorite initially contains no daughter nuclei is found to have three atoms of the daughter for each atom of the parent, which has a half-life of 1.3 Gyr. The temperature of the surface of Venus is much higher than was expected in the mid-1950's because a. Greenhouse effect 9. The high temperature of the surface of Venus was discovered by b. Mariner2 10. Saturn is 10 AU from the sun. The atmosphere of Venus consists mostly of a. carbon dioxide 14.
Greenhouse gasses raise the temperature of a planet by absorbing c.
Most of the carbon dioxide on earth is found in a. Carbonate rocks 16. The concept that the energy absorbed by a planet equals the energy emitted is called d. It is tempting to use conservation of energy. But energy is always conserved. This goes further in that there is no time dependence in the physical parameters such as temperature of the surface.