Origin of Universe

Front

What is the electromagnetic spectrum?

Back

The full range of frequencies and wavelengths of electromagnetic waves.

Front

What does the Big Bang Theory state?

Back

The universe started in a small mass and then expanded, cooling down to form matter, energy, space, and time.

Front

What happens to the light of a star if it and the Earth are moving away from each other?

Back

The star's light appears redder, indicating a redshift.

Front

Which wave has a higher frequency, A or B?

Back

Wave A has a higher frequency.

Front

What were the original two elements in our universe?

Back

Helium and Hydrogen.

Front

Define redshift in the context of astronomy.

Back

Redshift is the phenomenon where light from an object moving away from an observer shifts to longer wavelengths, appearing redder.

Front

What is the significance of the cosmic microwave background radiation?

Back

It is the afterglow of the Big Bang, providing evidence for the universe's early hot and dense state.

Front

What is dark matter?

Back

A form of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.

Front

What is the role of gravity in the formation of the universe?

Back

Gravity pulls matter together, leading to the formation of stars, galaxies, and other structures in the universe.

Front

What is the difference between a star and a planet?

Back

A star is a massive celestial body that produces light and heat through nuclear fusion, while a planet is a smaller body that orbits a star.