II. MULTIPLE CHOICE: Read and answer each questions. Circle the LETTER only. 11. Which of these affects surface temperature of planets? a. size of planets b. distance from the sun c. period of rotation 12. Which of the following bodies from Earth? can be used to collectigather important information about heavenly a. telescope b. space shuttles c. Skylab d. spectroscope 13. What kind of heavenly body is the sun? b. planet a. meteor c. star 14. Which of these describes the universe? a. organized b. disorganized c. messed up 15. The Earth revolves around the sun in how many days A. 365 days B. 366 days C. 365% days D. 366 % days 16. This planet considered as the biggest rocky planet and the only known planet where life exists B. Venus C. Earth D. Mars A. Mercury 17. Which of the following planets composed mostly of carbon dioxide that is why its surface temperature C. Earth B. Venus D. Mars is very hot? A. Mercury 19. This is the smallest gas planet which is composed of mostly hydrogen, helium, and methane which is visible as white cirrus-like clouds. A Jupiter B Saturn C Uranus D Neptune