Understanding Dark Matter

What percentage of the universe's energy density is made up of dark matter?

• 69%

• 26%

• 5%

• 100%

How do scientists infer the presence of dark matter if it cannot be seen?

• By detecting its gravitational effects

• By listening to its sound waves

• By measuring its temperature

• By observing its interaction with light

Who was the first to suggest the existence of dark matter?

• Isaac Newton

• Albert Einstein

• Fritz Zwicky

• Stephen Hawking

What phenomenon involves the bending of light due to gravity?

• Electromagnetic radiation

• Nuclear fusion

• Gravitational lensing

• Quantum tunneling

What is the significance of gravitational lensing in studying dark matter?

• It provides evidence of mass that cannot be seen

• It shows the color of dark matter

• It allows scientists to see dark matter directly

• It helps measure the temperature of dark matter

What are MACHOs in the context of dark matter?

• Magnetic Anomalous Cosmic Halos

• Miniature Astrophysical Cosmic Halos

• Molecular Astrophysical Cosmic Halos

• Massive Compact Halo Objects

What does the acronym WIMP stand for?

• Widely Influencing Massive Particle

• Weakly Interacting Massive Particle

• Widely Interacting Magnetic Particle

• Weakly Influencing Magnetic Particle

Why can't dark matter be composed of ordinary baryonic matter?

• It is too dense

• It doesn't interact with light

• It is too rare

• It is too luminous

What is the main challenge in directly detecting dark matter?

• Its high temperature

• Its lack of interaction with regular matter

• Its small size

• Its rapid movement

What is the current status of scientific understanding of dark matter?

• It is completely unknown

• It is irrelevant to modern science

• It is partially understood with ongoing research

• It is fully understood