Space Physics (The Universe) Quiz

What is the name of the galaxy that we are in?

• Andromeda galaxy

• Milky Way Galaxy

• Sombrero galaxy

• Triangulum galaxy

What is the diameter of our galaxy?

• 30,000 light-years

• 50,000 light-years

• 75,000 light-years

• 100,000 light-years

What is redshift?

• Increase in observed wavelength of electromagnetic radiation

• Decrease in observed wavelength of electromagnetic radiation

• Increase in observed frequency of electromagnetic radiation

• Decrease in observed frequency of electromagnetic radiation

Light from galaxy A is redshifted. Meanwhile light from galaxy B is blueshifted. What does this mean in terms of their movement relative to the Earth?

• Both Galaxy A and Galaxy B are moving towards Earth

• Galaxy A is moving away from Earth, Galaxy B is moving towards Earth

• Both Galaxy A and Galaxy B are moving away from Earth

• Galaxy A is moving towards Earth, Galaxy B is moving away from Earth

State which of the following provides evidence in support of the Big Bang theory.

• Gravitational attraction

• Fusion of hydrogen into helium

• Supernova explosions

• Redshift of starlight from distant galaxies

What is the Doppler effect?

• The Doppler effect is the change in speed of light in a vacuum.
• The Doppler effect is the change in temperature due to pressure variations.
• The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.
• The Doppler effect is the change in color of a wave in relation to an observer.

What is the relation of redshift with the expanding universe?

• Redshift indicates the universe is shrinking

• Redshift indicates the universe is expanding

• Redshift indicates the universe is static

• Redshift indicates the universe is contracting

What is the Big Bang theory?

• The theory that the universe began from a giant explosion

• The theory that the universe is shrinking

• The theory that the universe is static

• The theory that the universe is contracting

What does the observation of redshift from distant galaxies support?

• Steady Expansion theory

• Big Bang theory

• Pulsating theory

• Steady State theory

What is the effect of an object moving away from an observer on the wavelength of light?

• Frequency increases

• Frequency decreases

• Wavelength increases

• Wavelength decreases