Which types of baryonic matter are most abundant in the universe? Select the two correct answers.
a. hydrogen
b. oxygen
c. nitrogen
d. carbon
e. helium
a. hydrogen
e. helium
According to the measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), which material is by far the most plentiful in the universe?
a. dark matter
b. dark energy
c. baryonic matter
d. neutrinos
According to the measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), the most plentiful material in the universe is dark energy.
The two correct answers are:
a. hydrogen
e. helium
Hydrogen and helium are the most abundant types of baryonic matter in the universe.
To find the correct answer to this question, we need to examine the composition of the universe and determine which types of baryonic matter are most abundant. Baryonic matter refers to ordinary matter composed of protons, neutrons, and electrons.
One way to determine the abundance of baryonic matter in the universe is through studying the cosmic microwave background radiation (CMB). CMB is leftover radiation from the early stages of the universe and can provide valuable information about its composition.
According to observations and measurements, the two most abundant types of baryonic matter in the universe are hydrogen and helium. This finding is supported by the Big Bang theory, which explains that after the initial expansion of the universe, the first elements formed were hydrogen and helium.
Therefore, the correct answers are:
a. hydrogen
e. helium