The Big bang Theory

A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

• Big Bang Theory

• Singularity Theory

• Galaxy Theory

Answer explanation

The Big Bang Theory describes the universe's origin from a singular point that expanded rapidly around 13.7 billion years ago, making it the correct choice over Singularity Theory and Galaxy Theory.

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NGSS.HS-ESS1-2

This type of wavelength that allows us to determine if an object if moving toward us or away from us

• Whiteshift and Blueshift

• Redshift and Greenshift

• Redshift and Blueshift

• Doppler Effect

• Cosmic Background Radiation

Answer explanation

Redshift and blueshift refer to the change in wavelength of light from an object. Redshift indicates the object is moving away, while blueshift indicates it is moving toward us, allowing us to determine its motion.

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NGSS.HS-PS4-5

Which of the following descriptions do scientist consider to be the most accurate regarding what actually happened during the Big Bang?

• Two galaxies collided causing an immense explosion as stars crashed into one another

• All of what would become the universe was concentrated in a single small point, or singularity, which rapidly expanded into what is now stars, planets, galaxies, matter, and energy.

• All matter emerged from a massive black hole at the center of the universe.

• Parts of the sun were ripped off by massive internal explosions and were thrown into space where they cooled to become other things, like plants, comets, and other galaxies.

Answer explanation

Scientists agree that the Big Bang involved the rapid expansion of a singularity, which contained all matter and energy that formed the universe, including stars and galaxies, making this description the most accurate.

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NGSS.HS-ESS1-2

Scientific observations of space indicated that is type of matter is the most abundant in the universe.

• hydrogen, helium, and dark matter

• gold and plutonium

• oxygen and water vapor

• carbon

Answer explanation

Hydrogen and helium are the most abundant elements in the universe, making up about 98% of its visible matter. Dark matter, while not directly observable, is believed to constitute a significant portion of the universe's total mass.

Which of the following statement are not evidence of the Big Bang Theory?

• Cavemen heard a loud bang at the beginning of time.

• The universe isn't moving

• The universe is expanding

• The universe is getting smaller

• Cosmic Background Microwave Radiation priovides us with potential evidnce of the Big Bang Theory

Answer explanation

The statements about cavemen hearing a bang, the universe not moving, and it getting smaller contradict the Big Bang Theory. In contrast, the universe is expanding and cosmic microwave background radiation support the theory.

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NGSS.HS-ESS1-2

Which of the following is NOT true about the Big Bang Theory?

• The Big Bang Theory explanations how life began on Earth and how it evolved over time.

• It is the scientific explanation for the origin of the universe.

• It states that the universe expanded from a single point and is still expanding today.

• It states that the universe used to be much hotter and smaller.

Answer explanation

The statement about the Big Bang Theory explaining how life began on Earth is NOT true. The theory focuses on the universe's origin and expansion, not the development of life.

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NGSS.HS-ESS1-2

What can we conclude from the observation that nearly all galaxies are moving away from us?

• Massive black holes are drawing galaxies away from Earth.

• The Sun and Earth are located at the center of the universe.

• Everything in the universe is moving the same direction.

• The once-smaller universe is expanding in all directions.

Answer explanation

The observation that nearly all galaxies are moving away indicates that the universe is expanding. This supports the conclusion that the universe was once smaller and is now expanding in all directions.

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NGSS.HS-ESS1-2

Galaxies that are REDSHIFTED are:

• actually BLUE

• really NEAR earth

• invisible or not visible

• moving AWAY from us.

Answer explanation

Galaxies that are redshifted are moving away from us, which causes their light to shift towards the red end of the spectrum. This phenomenon is a key indicator of the universe's expansion.

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NGSS.HS-ESS1-2

Most distant galaxies show a RED SHIFT. This is considered EVIDENCE that the universe is ___.

• getting cooler

• expanding

• condensing into a small point

• swirling around

Answer explanation

The red shift observed in distant galaxies indicates that they are moving away from us, which supports the theory that the universe is expanding. This phenomenon is a key piece of evidence for the Big Bang theory.

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NGSS.HS-ESS1-2

The CMB (Cosmic Background Radiation) is:

• the remaining energy from the big bang.

• incredibly cool.

• a cloud of light

• only located in certain places in the universe.

Answer explanation

The CMB is the remnant radiation from the Big Bang, filling the universe and providing evidence of its hot, dense origins. It is not just cool or a cloud of light, nor is it limited to specific locations.

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NGSS.HS-ESS1-2