Astro1 UCSB Final Questions And Answers Rated A+ New Update Assured Satisfaction

A THEORY is a pattern in nature thought to have predictive power. The test of a theory is a prediction. That's where pseudo-science fails. T/F - Answer-T Red giant stars are powered by hydrogen burning in a shell surrounding a core, which has been depleted of hydrogen. T/F - Answer-T Jovian planets have densities similar to that of water, and we know in fact that they are mostly made of water. T/F - Answer-F - Jovian planets are gaseous The Sun appears to circle the Celestial Sphere in one year because the Earth is circling the Sun. The Sun's apparent path is called the horizon. T/F - Answer-F - it's called the ecliptic A planet can occasionally act as a circumpolar star as seen from Santa Barbara. T/F - Answer-F Opaque bodies approximately obey the blackbody laws: the Stefan-Boltzmann Law and Wien's Law. T/F - Answer-T Venus's surface is very hot because it absorbs more sunlight than the earth does. T/F - Answer-B - its thick atmosphere keeps heat from escaping Ozone depletion may have stabilized because of an international agreement to reduce emission of certain industrial chemicals called chlorofluorocarbons. T/F - Answer-T Under exotic conditions, intuition sometimes fails, e.g. speed of light is the same for all observers. T/F - Answer-T Planetary orbits are circles with the Sun in the center. T/F - Answer-F The Cosmic Microwave Background has a blackbody spectrum. T/F - Answer-T Old streambeds and other topographic features indicate that Mars once had liquid water on its surface. T/F - Answer-TA good example of a positive feedback effect in global warming is that melting sea ice causes a decrease in the Earth's albedo, meaning we absorb more sunlight than ever. T/F - Answer-T While the heavy elements have been cooked-up in stars, several of the light elements and isotopes were made in the first few minutes of the Big Bang. T/F - Answer-T