Dark Matter and the Universe Quiz

What makes dark matter the greatest mystery of the universe?

• It can be touched and felt.

• It is made of known particles.

• It is visible and easy to detect.

• It cannot be seen, touched, or directly detected.

What percentage of the universe is made up of normal matter?

• Less than 5%

• Approximately 68%

• More than 95%

• About 27%

Why can't we see dark matter?

• It is made of particles that do not reflect light.

• It is too small to be seen.

• It is hidden behind other objects.

• It reflects too much light.

Who was the astronomer that first suggested the existence of dark matter?

• Isaac Newton

• Albert Einstein

• Fritz Zwicky

• Edwin Hubble

What did Fritz Zwicky observe that led to the hypothesis of dark matter?

• Stars disappearing from galaxies.

• Planets orbiting in reverse.

• Galaxies moving faster than expected.

• Galaxies colliding with each other.

What is the role of gravity in the context of dark matter?

• It has no effect on dark matter.

• It helps in detecting dark matter's presence.

• It makes dark matter visible.

• It repels dark matter.

How can we infer the presence of dark matter in the universe?

• By measuring the light it emits.

• By directly observing it with telescopes.

• By observing the bending of light around areas with high dark matter concentration.

• By detecting its sound waves.

What percentage of the universe is believed to be made up of dark energy?

• Less than 5%

• About 27%

• Approximately 68%

• More than 95%

What challenge does dark matter present to scientists?

• It is well understood.

• It remains largely unknown and undetectable.

• It is irrelevant to the universe.

• It is too easy to study.

What is the main reason dark matter is considered a mystery?

• It interacts with light like normal matter.

• It is made of known elements.

• It is less abundant than normal matter.

• Its exact nature and composition are still unknown.