Quiz 2

Question 1

What are the 7 types of electromagnetic radiation?

Answer 1

• Gamma ray
• X-ray
• Ultraviolet
• Visual
• Infrared
• Microwave
• Radio

Question 2

A telescope that uses a mirror to concentrate its light is called:

Answer 2

a reflecting telescope.

Question 3

What are the three parts of an atom?

Answer 3

• Protons
• Neutrons
• Electrons

Question 4

When the light from a star is passed through a prism a rainbow or spectrum appears with some of the colors missing. What are three things we can learn about a star by studying these missing colors carefully?

Answer 4

• The chemical composition of the star.
• The temperature of the star.
• How the star is moving towards or away from us by the Doppler shift.

Question 5

Atoms that have the same number of protons but a different number of neutrons are called:

Answer 5

Isotopes.

Question 6

As an electron orbits around an atom it tends to move at certain specific distances like lanes on a freeway. The paths are called:

Answer 6

Energy levels or orbitals.

Question 7

When photons of light bump into an atom the atom will absorb the photon and cause the electron to go into an excited state only if:

Answer 7

The energy of the photon is very close to the energy difference between energy levels in an atom.

Question 8

Wein’s Law states that the wavelength of maximum intensity of a black body ___ with temperature.

Answer 8

Decreases.

Question 9

The Stephan-Boltzman Law says that the energy emitted by a black body varies as what power of the temperature?

Answer 9

4

Question 10

The Doppler Effect states that when an object moves away from us its light is shifted towards what part of the spectrum?

Answer 10

The red end.