Dark Matter and Gravitational Lensing Quiz

Why is dark matter considered essential for the stability of galaxies?

• It absorbs energy from nearby stars.

• It provides the necessary gravity to hold galaxies together.

• It emits light that balances the galaxy's rotation.

• It interacts with regular matter to create stars.

What distinguishes cold dark matter from warm and hot dark matter?

• Cold dark matter particles emit more light.

• Cold dark matter particles move slower than warm and hot particles.

• Cold dark matter particles move faster than warm and hot particles.

• Cold dark matter particles are larger in size.

How does gravitational lensing help in detecting dark matter?

• It speeds up the movement of galaxies.

• It magnifies and distorts the light from quasars.

• It allows astronomers to see through galaxies.

• It changes the color of the light from stars.

What role do quasars play in the detection of dark matter?

• They emit radio waves that detect dark matter.

• They create gravitational waves that reveal dark matter.

• They provide a light source that is distorted by dark matter.

• They absorb dark matter particles.

What future telescopes are expected to enhance the study of dark matter?

• Voyager 1 and Voyager 2

• Hubble Space Telescope and Spitzer Space Telescope

• James Webb Space Telescope and Wide Field Infrared Survey Telescope

• Chandra X-ray Observatory and Kepler Space Telescope