Question 1. What happens to the light that is missing in an absorption spectrum?

1. It is reflected by atoms on the surface of the hot, dense object.
2. It is emitted by atoms in a low density gas cloud.
3. It is reflected by dust in a nebula.
4. It is absorbed by the atoms inside the hot, dense object.
5. It is absorbed by atoms in a low density gas cloud.

Question 2. The greenhouse effect occurs because

1. ozone is transparent to infrared radiation and opaque to ultraviolet radiation.
2. carbon dioxide is transparent to infrared radiation and opaque to ultraviolet radiation.
3. the sun emits more infrared radiation than ultraviolet radiation.
4. ozone is transparent to visible light and opaque to infrared radiation.
5. carbon dioxide is transparent to visible light and opaque to infrared radiation.

Question 3. A star is found which radiates most of its energy at a wavelength of 1,000 nm. What is the temperature of the surface of that star?

1. 30,000 K
2. 10,000 K
3. 3,000 K
4. 1,000 K
5. 10 K

Question 4. body spectrum for those walls?

1. 30,000 nm
2. 10,000 nm
3. 3,000 nm
4. 1,000 nm
5. 10 nm

Question 5. The _____ is responsible for binding the electrons to the nucleus.

1. ground state
2. temperature
3. Balmer series
4. Coulomb force
5. Kirchhoff’s law