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WorksheetsPre-Assessment: Formation of Light Elements in the Universe
Total questions: 10
Worksheet time: 7mins
What is the term referred to the process that creates new atomic nucleus from preexisting nucleons , primarily protons and neutrons?
nuclear fusion
nuclear reaction
nuclear synthesis
nucleosynthesis
What is the term referred to the process by which light nuclei fuse together to form a heavier nucleus?
nuclear fusion
nuclear reaction
nuclear synthesis
nucleosynthesis
It is a theory that explains that the universe started as a very dense and hot “singularity” which eventually cooled and began to form different particles?
big bang theory
cosmic inflation theory
oscillating theory
steady state theory
What was formed as the universe expanded and cooled down?
electron
neutron
proton
subatomic particles
What is formed when there is a fusion of a proton and neutron in big bang nucleosynthesis?
deuterium
protium
tritium
hydrogen
What is formed when there is a fusion of two deuterium nuclei in big bang nucleosynthesis?
Helium-3
Hydrogen
neutron
one neutron and helium-3
What are the conditions in the universe so that a nuclear fusion could occur?
high energy
high energy and temperature
high temperature
moderate conditions
What is formed when there is fusion of deuterium and tritium?
Helium-2
Helium-3
Helium-4
Helium-2 and neutron
What is the term referred to form of an element that has the same atomic number of the original element but with different atomic mass or mass number?
elements
heavy elements
isotopes
light elements
The following light elements were formed in the big bang nucleosynthesis?
H, He, Be, C
He, H, Be, Li
Li, H, He, Na
Fe, H, He, Be
