Question 1. Why are most modern telescopes reflecting telescopes?                                                

A) Lenses can easily break
B) Only visible light can be refracted
C) Mirrors are easier to build
D) CCD cameras only work on reflecting telescopes
E) none of the above

Question 2. A typical amateur telescope is 7 inches in diameter, while the telescope we are installing at CSU Stanislaus is 21 inches in diameter. How much more sensitive is the CSU telescope than a typical amateur telescope?

A) 2 times
B) 9 times
C) 3 times
D) 6 times
E) 12 times

Question 3. Which types of electromagnetic radiation can be seen from the surface of Earth?                     

A) Gamma rays and X-rays
B) Visible light and Infrared
C) Infrared light and Radio waves
D) Infrared and Ultraviolet
E) Visible light and Radio waves

Question 4. A neutral hydrogen atom consists of                                           

A) one proton
B) an isotope and an ion
C) one proton and one electron
D) one proton, one neutron, and one electron.
E) one proton and one neutron

Question 5. The temperature of an object from which no heat energy can be extracted is                            

A) 100 degrees Kelvin
B) 0 degrees Kelvin
C) 0 degrees Centigrade
D) 0 degrees Fahrenheit
E) 100 degrees Centigrade