WorksheetsGalaxies
Total questions: 12
Worksheet time: 9mins
The age of the Universe can be deduced from...
Hubble's Law
Kepler's 3rd Law
The Doppler Shift Law
The Inverse Square Law
Shapley's Law
The study of the structure and evolution of the Universe is called...
Anthropology
Cosmology
Astronomy
Archaeology
What does it mean when galaxies, such as the Andromeda Galaxy, has a blueshift instead of a redshift (like most galaxies)?
All nearby galaxies have a blue color
It is moving toward us
It is undergoing a starburst, so it has many young high-mass stars
It contains no Cepheid variables
It is "behind" us, expanding in the opposite direction
What is probably the end result after a collision between two galaxies?
Complete destruction of all the stars
Formation of a giant spiral from two elliptical ones
Formation of a single open star cluster
Formation of an irregular galaxy
What is meant when a galaxy is redshifted?
Distant galaxies appear red in color due to having older stars
The temperature of distant galaxies is decreasing
The galaxy is moving away from us, so the wavelengths are longer
The light from distant galaxies appear red when going through dust
Based on the galaxies found in the Local Group of galaxies, the most common type of galaxy in the Universe is probably...
Spiral
Barred Spiral
Dwarf Elliptical
Irregular
Giant Elliptical
The most massive galaxies are
Spiral
Giant Elliptical
Irregular
Dwarf Elliptical
The brightest galaxies are...
Spiral
Giant Elliptical
Irregular
Dwarf Elliptical
Galactic cannibalism refers to...
binary galaxies
merging of galaxies
galaxies drawing in gas from intergalactic medium
the matter of galaxies getting pulled into the central black hole
An elliptical galaxy...
evolve into an irregular galaxy when it has used up all the gas and dust
formed from the merger of spiral galaxies
evolve from a single spiral galaxy when the spiral has used up all its gas and dust
become a starburst galaxy if it were to move through the hot intergalactic medium
A galaxy’s spectrum has a redshift of 2,100 km/sec. If the Hubble constant is 70 km/s/Mpc, how far away from Earth is the galaxy?
What type of galaxy is in the highlighted in the illustration?
E0
E3
E7
Sa
Sb
