Dark Matter and Dark Energy in Dwarf Galaxies and Ultra-Faint Galaxies
This quiz will test your knowledge about dark matter and dark energy in dwarf galaxies and ultra-faint galaxies.
Questions
What is the primary component of dark matter?
- Weakly interacting massive particles (WIMPs)
- Axions
- Sterile neutrinos
- Primordial black holes
What is the primary component of dark energy?
- A cosmological constant
- A scalar field (quintessence)
- Modified gravity
- A combination of the above
What is the mass-to-light ratio of a dwarf galaxy?
- Less than 1
- 1 to 10
- 10 to 100
- Greater than 100
What is the mass-to-light ratio of an ultra-faint galaxy?
- Less than 1
- 1 to 10
- 10 to 100
- Greater than 100
What is the typical size of a dwarf galaxy?
- 100 parsecs
- 1 kiloparsec
- 10 kiloparsecs
- 100 kiloparsecs
What is the typical size of an ultra-faint galaxy?
- 10 parsecs
- 100 parsecs
- 1 kiloparsec
- 10 kiloparsecs
What is the typical luminosity of a dwarf galaxy?
- 10^6 solar luminosities
- 10^7 solar luminosities
- 10^8 solar luminosities
- 10^9 solar luminosities
What is the typical luminosity of an ultra-faint galaxy?
- 10^3 solar luminosities
- 10^4 solar luminosities
- 10^5 solar luminosities
- 10^6 solar luminosities
What is the typical number of stars in a dwarf galaxy?
- 10^6 stars
- 10^7 stars
- 10^8 stars
- 10^9 stars
What is the typical number of stars in an ultra-faint galaxy?
- 10^3 stars
- 10^4 stars
- 10^5 stars
- 10^6 stars
What is the typical distance between dwarf galaxies?
- 100 kiloparsecs
- 1 megaparsec
- 10 megaparsecs
- 100 megaparsecs
What is the typical distance between ultra-faint galaxies?
- 10 kiloparsecs
- 100 kiloparsecs
- 1 megaparsec
- 10 megaparsecs
What is the typical velocity of a dwarf galaxy?
- 10 km/s
- 100 km/s
- 1 km/s
- 1000 km/s
What is the typical velocity of an ultra-faint galaxy?
- 1 km/s
- 10 km/s
- 100 km/s
- 1000 km/s
What is the fate of a dwarf galaxy?
- It will merge with a larger galaxy.
- It will be tidally disrupted by a larger galaxy.
- It will remain a dwarf galaxy forever.
- It will be destroyed by a supernova.
What is the fate of an ultra-faint galaxy?
- It will merge with a larger galaxy.
- It will be tidally disrupted by a larger galaxy.
- It will remain an ultra-faint galaxy forever.
- It will be destroyed by a supernova.