Summative Test 1: Physical Science

What is Big Bang Theory ?

• It is a cosmological model stating that the universe started its expansion about 13.8 billion years ago.

• It is a cosmological model stating that the universe started its explosion about 13.8 billion years ago.

• It is the process that creates new atomic nuclei from pre-existing nucleons

• It is a point in space and/or a moment in time where the universe was infinitely hot and dense

What composed a nucleon?

• proton & neutron

• electron & Proton

• electron and neutron

• proton, electron and neutron

What is the atomic number of Oxygen?

• 16

• 8

• 23

• 11

Which one of the two element is heavier ?

• Oxygen

• Sodium

• Both

• none

Which of the following statement best describes an isotope ?

• atoms with same atomic mass but different in atomic number

• atoms with same atomic number but different in atomic mass

• atoms with the same atomic mass and atomic number

• atoms with different atomic mass and atomic number

Which is not considered an evidence of Bigbang theory

• Red shift

• Relative abundance

• Cosmic microwave background

• Inflation

What does the presence of lithium in old stars support?

• It formed from black holes

• It formed from star collapse

• It was made during the Big Bang

• It was created during Earth’s formation

Bigbang Nucleosynthesis: Light Elements; ______________________: Heavy Elements

• Bigbang Nucleosynthesis

• Stellar Nucleosynthesis

• Light elements

• Heavy Elements

Henry Moseley: ____________; Nuclear Transmutation: Ernest Rutherford

• X-ray Spectroscopy

• Nuclear Fusion

• Nucleosynthesis

• Nuclear fission

Ernest Lawrence:______________; Edwin Mcmillan and Philip Abelson: Neptunium

• Astatine

• Technecium

• Plutonium

• Francium