Question

The (electromagnetic radiation / gravity) of dark matter causes baryonic gas and dust to (clump together / break apart).

Answer 1

The gravity of dark matter causes baryonic gas and dust to clump together. Dark matter does not interact directly with electromagnetic radiation, as it does not emit, absorb, or reflect light. However, its gravitational influence on baryonic matter leads to the formation of structures such as galaxies, galaxy clusters, and larger cosmic structures.

Answer 2

Which types of baryonic matter are most abundant in the universe? Select the two correct answers.(1 point)
Responses

oxygen
oxygen

hydrogen
hydrogen

carbon
carbon

helium
helium

nitrogen

Answer 3

The two correct answers are:

1. Hydrogen
2. Helium

Answer 4

According to measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), which material is by far the most plentiful in the universe?(1 point)
Responses

dark matter
dark matter

dark energy
dark energy

neutrinos
neutrinos

baryonic matter

Answer 5

According to measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), the material that is by far the most plentiful in the universe is dark energy.