LESSON 3 PHYSCI

Who proposed the Big Bang Theory?

• Albert Einstein

• Stephen Hawking

• Georges Lemaitre

• Isaac Newton

What is one of the evidences supporting the Big Bang Theory?

• Presence of black holes

• Continuous expansion of the universe

• Existence of dark matter

• Abundance of carbon

What is the first step in the formation of heavier elements in stars?

• Expansion of the star

• Creation of a helium shell

• Ignition of hydrogen fusion

• Formation of a plasma core

What happens when hydrogen atoms fuse into helium in the core of a star?

• Expansion of the star

• Formation of a carbon core

• Formation of a helium core

• Creation of a hydrogen shell

Why do we stop at Iron (Fe) in the process of element formation in stars?

• Because iron is the most abundant element

• Because more energy is needed for further fusion

• Because iron is the most stable element

• Because iron is the heaviest element

What is the purpose of a cyclotron in the synthesis of new elements?

• To study the behavior of electrons

• To accelerate protons to hit a target nucleus

• To generate x-rays for spectroscopy

• To create a plasma core in stars

How many transuranic elements are there in total?

• 20

• 15

• 26

• 30

Which element has the atomic number 99?

• Organesson (Og)

• Einsteinium (Es)

• Livermorium (Lv)

• Tennessine (Ts)

What did Henry Moseley's X-Ray Spectroscopy Experiment help in arranging?

• Elements based on weight

• Elements based on chemical properties

• Elements based on atomic number

• Elements based on melting point

How are heavier elements synthesized in laboratories on Earth?

• By studying the behavior of neutrons

• By cooling down plasma cores

• By using a particle accelerator to add protons to existing atomic nuclei

• By creating a fusion reaction with hydrogen atoms