PHYSICAL SCIENCE_Q1EXAM

Elements heavier than iron are formed through what type of nucleosynthesis?

• big bang

• stellar

• supernova

• neutron capture

The following are the key observational evidences that support the big bang theory, EXCEPT

• Cosmic expansion

• CMB

• big bang nucleosynthesis

• relativity

He is a Belgian astrophysicist and priest who pioneered the big bang model.

• Albert Einstein

• Abbe Georges Edouard Lemaitre

• Fred Hoyle

• Edwin Hubble

These are atoms of the same element with different number of neutrons.

• ions

• isotopes

• nuclei

• protons

Light elements such as helium and lithium are formed through _________.

• stellar nucleosynthesis

• big bang nucleosynthesis

• supernova nuclecosynthesis

• exothermic reaction

This a a type of nuclear reaction that refers to the splitting of a heavy nucleus into lighter nuclei.

• exothermic

• endothermic

• fusion

• fission

This is a type of nuclear reaction through which light nuclei combine to form a heavier nucleus.

• fusion

• fission

• exothermic

• endothermic

This is a type of reaction that releases energy in the form of heat or light.

• exothermic

• endothermic

• fusion

• fission

What type of burning is always a source of oxygen in stars?

• helium burning

• Carbon burning

• Silicon burning

• Iron burning

This refers to the energy needed to break down a nucleus into its nucleons.

• binding energy

• chemical energy

• stellar energy

• blasting energy