Tag: origin of universe

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Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

The cosmic microwave background radiation comes from:

  1. quasars

  2. the solar nebula

  3. the Big Bang

  4. radio galaxies
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cosmic microwave background radiation is the thermal radiation left over from the time of recombination in the early universe, serving as a primary piece of evidence for the Big Bang theory.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

What does the Big Bang Theory say?

  1. The universe is collapsing and getting smaller.

  2. The universe was created in its current location

  3. All of the matter in the Universe exploded from a tiny, dense point

  4. Two galaxies collided causing a big bang
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Big Bang Theory posits that the universe began as an extremely hot, dense point and has been expanding ever since. It describes the evolution of the universe from this initial state.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

State whether true or false :
Comets are very small-sized celestial bodies that revolve around the sun in highly elliptical orbits.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Comets are indeed icy, small celestial bodies that follow highly elliptical orbits around the Sun. When they approach the Sun, they develop a tail due to solar radiation.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

The cosmic micorwave background radiation comes from :

  1. Radio galaxies

  2. The big bang

  3. The solar nebula

  4. Quasars
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cosmic microwave background radiation is the relic radiation from the Big Bang. It is uniform across the sky and provides evidence for the early hot state of the universe.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

State whether true or false :
When Meteor enters the atmosphere of the earth, it gets heated due to friction of the air.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When a meteoroid enters Earth's atmosphere, it travels at high speeds. The friction with atmospheric gases generates intense heat, causing the object to glow and often vaporize, which we see as a shooting star.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

There are two ways to measure the brightness of a star; the apparent magnitude of the brightness of the star is the brightness seen from the earth and absolute magnitude of the brightness of the star which is the brightness of a star seen from the standard distance of ___________.

  1. $10$ parsec
  2. $32.6$ light years
  3. $3.26$ light years

  4. both (a) and (b)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Absolute magnitude is defined as the apparent magnitude a star would have if it were at a distance of 10 parsecs from Earth. Since 1 parsec is approximately 3.26 light-years, 10 parsecs is equal to 32.6 light-years.