Understanding the Big Bang Theory

What is the term used to describe the initial state of the universe before the Big Bang?

• Cosmic Microwave Background

• Initial Singularity

• Dark Matter

• Black Hole

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NGSS.HS-ESS1-2

Approximately how many years ago did the Big Bang occur?

• 4.5 billion years ago

• 10 billion years ago

• 13.8 billion years ago

• 20 billion years ago

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NGSS.HS-ESS1-2

What significant event marked the start of space and time?

• Formation of the first stars

• Creation of atoms

• Rapid expansion of the singularity

• Formation of galaxies

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NGSS.HS-ESS1-2

Which particles formed within minutes after the Big Bang?

• Electrons and positrons

• Protons and neutrons

• Photons and neutrinos

• Atoms and molecules

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NGSS.HS-ESS1-2

What did protons and neutrons combine to form shortly after the Big Bang?

• Electrons

• Simple nuclei

• Dark matter

• Cosmic rays

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NGSS.HS-ESS1-2

How long after the Big Bang did electrons combine with nuclei to form atoms?

• 1,000 years

• 10,000 years

• 380,000 years

• 1 million years

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NGSS.HS-ESS1-2

What type of radiation was released when electrons combined with nuclei to form atoms?

• Ultraviolet Radiation

• Infrared Radiation

• Cosmic Microwave Background Radiation

• Gamma Radiation

What formed from density fluctuations in the early universe over millions of years?

• Black holes

• Planets

• Stars and galaxies

• Comets

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NGSS.HS-ESS1-3

What evidence supports the ongoing expansion of the universe?

• The presence of black holes

• The movement of distant galaxies

• The formation of new stars

• The existence of dark matter

What are the primary elements formed when electrons combined with nuclei after the Big Bang?

• Carbon and oxygen

• Hydrogen and helium

• Nitrogen and sulfur

• Iron and nickel

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NGSS.HS-ESS1-2