What is the estimated age of the universe?

• 13.73 billion light years

• 93 billion light years

• 13.73 billion years

• 93 billion years

What is the estimated diameter of the observable universe?

• 13.73 billion years

• 93 billion years

• 13.73 billion light years

• 93 billion light years

The universe is believed to be mostly composed of dark energy and dark matter, both of which are poorly understood at present.

• TRUE

• FALSE

Only 4% of the universe is composed of dark matter.

• TRUE

• FALSE

Which of the following is the speed of the light in a vacuum?

• 3.0 x 10^8 m/s

• 3.0 x 10^12 m/s

• 3.0 x 10^8 km/s

• 3.0 x 10^12 km/s

Which theory generally refers to the idea that the universe expanded from a primordial hot and dense initial condition at some finite time in the past and continues to expand to this day?

• Big Bang Theory

• Creationism Theory

• Steady-state Theory

• Intelligent Design Theory

Which of the following describes the Hubble's Law?

• The farther away galaxies are, the faster they are moving away from Earth.

• As galaxies move farther away, the light wave is shifted to the red end spectrum.

• The farther away galaxies are, the slower they are moving away from Earth.

• As galaxies move farther away, the light wave is shifted to the blue end spectrum.

Who proposed the well-known theory on the origin of the universe and called it the hypothesis of the primeval atom?

• Albert Einstein

• Georges Lemaitre

• Nicholas Copernicus

• Stephen Hawking

Which of the following describes the red shift?

• The light seen from an object moving far away is shifted to the blue spectrum.

• The light seen from an object moving far away is shifted to the red spectrum.

• The light seen from an object moving closer is shifted to the red spectrum.

• The light seen from an object moving far away is shifted to the middle of the spectrum.

Which of the following is NOT an evidence of the expansion of the universe?

• Studying the cosmic microwave background (CMB) radiation.

• Red shift phenomenon

• Measuring the distance of the stars and galaxies

• The sound waves randomly reaching the satellites.