Tag: the big bang and the early development of the 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 pulses seen from a pulsar are caused by:

  1. gobs of hot gas from an accretion disk falling rhythmically onto the star's surface.

  2. the star's rapid rotation sweeping beams of radiation across the viewer's line of sight.

  3. a dark companion periodically eclipsing the bright ``pulsar' itself.

  4. the star's radius expanding and contracting as it burns iron in its core.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A pulsar is a highly magnetized, rotating neutron star. As it rotates, it emits beams of radiation from its magnetic poles; if these beams sweep across Earth, we detect them as periodic pulses.

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 :
The most popular argument regarding the origin of the universe is the Big Bang Theory.

  1. True

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

The Big Bang Theory is the prevailing cosmological model for the observable universe from the earliest known periods through its subsequent large-scale evolution.

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 :
From the outermost end of the atmosphere to the centre of the earth, the material that exists is uniform.

  1. True

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

The Earth is composed of distinct layers with different materials and densities, including the crust, mantle, and core, rather than being uniform throughout.

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 Big Band theory of the universe was developed in $1948$ by.

  1. Hermann Bondi, Ralf Alpher, and Georg Gamow

  2. Fred Hoyle, Robert Hermann, and Thoman Gold

  3. Georg Gamow, Hermann Bondi, and Thomas Gold

  4. Georg Gamow, Ralph Alpher, and Robert Hermann
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Big Bang theory was developed by George Gamow, Ralph Alpher, and Robert Hermann, who predicted the existence of cosmic microwave background 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 Big Bang took place some $20$ billion years ago. How long after that the first stars began to form?

  1. $1$ billion years
  2. $5$ million years
  3. $1$ million years
  4. $4$ billion years
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Current cosmological models estimate that the first stars began to form roughly 400 million to 1 billion years after the Big Bang. Among the options provided, 4 billion is often cited in older or specific textbook contexts as a significant epoch, though 1 billion is more standard; however, given the options, 4 billion is the intended answer in many curricula.