Front

What happens to the wavelengths of energy if they are moving AWAY from a source?

Back

The waves stretch out and get longer.

Tags

NGSS.HS-PS4-1

Front

How is the 'Big Bang' described?

Back

An expansion.

Tags

NGSS.HS-ESS1-2

Front

What is the term used to describe the phenomenon observed when galaxies move away from our galaxy?

Back

Redshift.

Tags

NGSS.HS-ESS1-2

Front

What is the significance of the abundance of hydrogen and helium in the universe?

Back

Hydrogen and helium are in the same ratio throughout the universe, supporting the Big Bang Theory.

Tags

NGSS.HS-ESS1-2

Front

What does the term 'redshift' refer to in the context of astronomy?

Back

The shift of light to longer wavelengths as objects in space move away from the observer.

Tags

NGSS.HS-ESS1-2

Front

What evidence supports the Big Bang Theory regarding cosmic microwave background radiation?

Back

The existence of uniform microwave radiation throughout the universe is a remnant of the Big Bang.

Tags

NGSS.HS-ESS1-2

Front

What is the role of dark energy in the expansion of the universe?

Back

Dark energy is thought to be responsible for the accelerated expansion of the universe.

Front

How does the Big Bang Theory explain the formation of elements in the universe?

Back

The theory suggests that light elements like hydrogen and helium were formed during the first few minutes after the Big Bang.

Tags

NGSS.HS-ESS1-2

Front

What is the observable universe?

Back

The part of the universe that we can see and measure, limited by the speed of light and the age of the universe.

Front

What is the significance of the Hubble's Law in cosmology?

Back

Hubble's Law states that the farther away a galaxy is, the faster it is moving away from us, supporting the idea of an expanding universe.