Big Bang Theory

Front

Cosmic Microwave Background Radiation is a form of _________.

Back

Energy

Front

Most scientists believe the Big Bang Theory explains which of the following questions?

Back

How our universe began.

Front

The universe is expanding! This means that:

Back

All of the galaxies are spreading out, the universe must have started from a single point, the universe is cooling down, all of the above.

Front

Who observed that most galaxies are moving away from us?

Back

Edwin Hubble.

Front

What best describes the Doppler effect?

Back

An apparent change in frequency of a wave due to the relative motion between a wave source and an observer.

Front

What is the Big Bang Theory?

Back

A scientific explanation of how the universe began from a singular point and has been expanding ever since.

Front

What evidence supports the Big Bang Theory?

Back

Cosmic Microwave Background Radiation and the observed redshift of distant galaxies.

Front

What is redshift?

Back

The phenomenon where light from an object moving away from an observer is shifted to longer wavelengths.

Front

What does the term 'expansion of the universe' refer to?

Back

The observation that galaxies are moving away from each other over time.

Front

What is the significance of Edwin Hubble's observations?

Back

He provided evidence that the universe is expanding, leading to the formulation of Hubble's Law.