Quiz 8

1. What are the types of spectra? Continuous, Emission, Absorption.
2. Which is hotter a blue or a red star? Blue
3. Do humans emit electromagnetic radiation? Yes
4. Which planet looks red from Earth? Mars
5. Describe a refraction telescope. Telescope that uses a converging lens to collect light.
6. Describe a reflection telescope. Telescope in which a mirror is used to collect light 
7. Why telescopes are sent to space? So they are not subject to light pollution. 
8. Can we detect radio waves from space? Yes
9. Describe the Arecibo telescope in Puerto Rico. It is the world's largest radio telescope.
10. What is the Doppler effect? When wave energy like sound or radio waves travels from two objects, the wavelength can seem to be changed if one or both of them are moving.