Astronomy Lecture Practice Tests Unit 1

Which particle always has a positive charge?

• Proton
• Electron
• Positron
• Neutron

The wavelengths of light that are emitted from a body that is towards us are

• Shifted towards shorter wavelengths

  (blueshift)

• Shifted towards longer wavelengths
  (redshift)

Which particle consists of a nucleus and orbiting electrons?

• Neutron
• Proton
• Molecule
• Atom

Which particle determines the isotope of an element?

• Proton
• Neutron
• Electron
• Photon

Which particle is considered an elementary particle?

(Neutrons are made up of three quarks)

• Electron
• Neutron
• Proton

Which of the following lists is arranged in order shortest wavelength to longest wavelength?

(The shorter the wavelength the higher the frequency & energy will be)

• Gamma rays, ultraviolet, infrared, X-rays, radio waves, visible light

• Gamma rays, X-rays, ultraviolet, infrared, radio waves, visible light

• Gamma rays, X-rays, ultraviolet, radio waves, infrared, visible light

• Gamma rays, X-rays, ultraviolet, visible light, infrared, radio waves

The larger the energy difference between two atomic orbits of an electron the

• lower the energy level of the electron
• no effect on the energy level of the electron
• causes the electron to move to a different atom
• larger the frequency of the emitted light

The wavelengths of light that are emitted from a body that is moving away from us are

• Shifted towards shorter wavelengths 

  (blueshift)

• Shifted towards longer wavelengths 
  (redshift)

Which region of the solar atmosphere has a temperature of millions of degrees?

• Corona
• Jupiter
• Earth's core
• Mars

Which region is referred to as the “surface” of the Sun?

• photosphere
• mantle
• core
• atmosphere