Front

What does a blue shift in the light of a star observed from Earth indicate?

Back

The star is moving towards the Earth.

Front

What is the term for an infinitely small, infinitely dense, and infinitely hot point believed to have existed before the Big Bang?

Back

Singularity.

Tags

NGSS.HS-ESS1-2

Front

What significant astronomical event occurred 350,000 years after the Big Bang involving hydrogen atoms?

Back

The formation of the first stars.

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

Front

In the context of sound waves, what does the Doppler effect change in relation to frequency?

Back

It results in a change in pitch.

Front

Which two elements are most abundant in the visible universe?

Back

Hydrogen and Helium.

Tags

NGSS.HS-ESS1-2

Front

What is the Big Bang Theory?

Back

A scientific explanation for the origin of the universe, stating it began from a singularity and expanded.

Tags

NGSS.HS-ESS1-2

Front

What is cosmic microwave background radiation?

Back

The afterglow radiation from the Big Bang, filling the universe and providing evidence for the theory.

Tags

NGSS.HS-ESS1-2

Front

What role does gravity play in the formation of stars?

Back

Gravity pulls hydrogen atoms together to form stars.

Tags

NGSS.HS-PS2-4

Front

What is redshift and how does it relate to the movement of galaxies?

Back

Redshift occurs when light from an object is stretched to longer wavelengths, indicating the object is moving away from the observer.

Tags

NGSS.HS-ESS1-2

Front

What is nucleosynthesis and when did it occur in the universe?

Back

Nucleosynthesis is the process of forming new atomic nuclei, occurring in the first few minutes after the Big Bang.

Tags

NGSS.HS-ESS1-2