Answer the following question: If the earth did not have an atmosphere, would its average surface temperature be higher or lower than what it is now?

If the earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now?

Answer the following questions based on the P-T phase diagram of carbon dioxide: What are the critical temperature and pressure for CO_@ ? What is their significance?

Answer the following questions: If a toroid uses bismuth for its core, will the field in the core be (slightly) greater or (slightly) less than when the core is empty?

Answer the following questions:The earth may have even reversed the direction of Its field several times during its history of 4 to 5 billion years. How can geologists know about the earth’s field in such distant past?

Answer the following questions: As you have learnt in the text, the principle of linear superposition f wave displacement is basic to understanding intensity distributions in diffraction and interference patterns.What is the justification of this principle?

Answer the following questions: Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

Answer the following questions:The earth’s field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion?