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What causes arcs of light seen by scientists looking at the galaxy with a telescope?

(1 point)

Light produced by a number of stars in the galaxy join together being pulled in by gravity. This is referred to as an "arc of light."
Large galaxy clusters containing both dark matter and normal matter. The immense
• gravity of all this material warps the space around the cluster, causing the light from objects located behind the cluster to be distorted and magnified.
• The largest stars in the galaxy produce a rainbow that scientists call an arc of light.
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The light from the stars of a distant galaxy bends the light and so the arcs of light seen through telescopes.
Which statements provide evidence to support for the theory of the big bang? Select the TWO correct responses. (1 point)
• The universe began as a very high density singularity.
Spiral galaxies that are smaller become larger elliptical galaxies when they collide with each other. • The ratios of hydrogen and helium in the universe match those of the early universe.
• Dark matter makes up the smallest portion of matter in the universe.
What does the red-shift of light from galaxies indicate which supports the Big Bang Theory? (1 point)
• The universe is expanding.
• The universe if cooling off.
• The universe is mainly composed of hydrogen.
• The universe if 13.8 billion years old.
How does the change in the temperature of the universe provide evidence for universe expansion that supports the Big Bang Theory? (1 point)

The universe is warming which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.
The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.

1 answer

  1. What causes arcs of light seen by scientists looking at the galaxy with a telescope?

    • Correct Answer: Large galaxy clusters containing both dark matter and normal matter. The immense gravity of all this material warps the space around the cluster, causing the light from objects located behind the cluster to be distorted and magnified.

  2. Which statements provide evidence to support for the theory of the big bang? Select the TWO correct responses.

    • Correct Answers:
      • The universe began as a very high density singularity.
      • The ratios of hydrogen and helium in the universe match those of the early universe.

  3. What does the red-shift of light from galaxies indicate which supports the Big Bang Theory?

    • Correct Answer: The universe is expanding.

  4. How does the change in the temperature of the universe provide evidence for universe expansion that supports the Big Bang Theory?

    • Correct Answer: The universe is cooling which, according to the Big Bang Theory, is expected to happen as the cosmos disperses.