WorksheetsThe origin of matter: chemical evolution
Total questions: 8
Worksheet time: 5mins
What are the main elements in the universe?
Hydrogen and carbon
Helium and Oxygen
Hydrogen and Helium
Nitrogen and Iron
The (a) of chemical elemets in objects in space is due to nuclear fusion processes. Is needed extreme temperatures and pressure conditions.
What is the primordial nucleosynthesis?
Hydrogen nuclei joined to form helium nuclei
The join of different elements to create a star
The process in which different elements join after the Big Bang
When different atoms fuse and reach very high temperatures
What is the stellar nucleosynthesis?
Is the process in which newly formed stars reach the temperature required for nuclear fusion again.
What happens when a star explode?
What happens when the hydrogen in the core of a star is consumed?
The helium fuses to produce carbon and other heavier atoms up to iron.
What is the process of nuclear fusion in stars?
The conversion of stars into black holes
The creation of new stars from existing ones
The fusion of hydrogen nuclei to form helium nuclei
The process of converting stars into white dwarfs
How do stars contribute to the creation of elements?
Stars do not play a role in the creation of elements
Stars convert elements into energy through nuclear fusion
Stars produce heavier elements through fusion reactions
Stars absorb elements from planets to sustain their core
