Cosmic Rays and Particle Acceleration

Who was the scientist that discovered cosmic rays using a hot-air balloon?

• Niels Bohr

• Marie Curie

• Victor Hess

• Albert Einstein

What is the primary source of most cosmic rays according to recent scientific consensus?

• Supernovae

• Galactic collisions

• The Sun

• Black holes

What is required for a supernova to act as a particle accelerator?

• Gravitational waves

• Shockwaves and magnetic fields

• Dark matter

• High temperatures and pressure

What is the Fermi Acceleration Mechanism also known as?

• Diffusive acceleration

• Thermal acceleration

• Quantum acceleration

• Gravitational acceleration

Why are supernova remnants effective at accelerating particles?

• They have strong gravitational fields

• They are extremely large

• They emit high levels of radiation

• They contain dark matter

What is the maximum energy a supernova-accelerated particle can reach?

• 10^17 electron volts

• 10^19 electron volts

• 10^15 electron volts

• 10^21 electron volts

Where are the origins of ultra-high-energy cosmic rays likely found?

• In the Sun's corona

• Within the Milky Way

• In other galaxies

• In the Earth's atmosphere

What is a potential source of the highest energy cosmic rays?

• The Sun

• Magnetars

• The Moon

• The Earth's core

What phenomenon is especially promising for producing cosmic rays?

• Tidal waves

• Earthquakes

• Solar flares

• Supermassive black hole jets

What is the role of magnetic fields in cosmic ray acceleration?

• They slow down particles

• They deflect particles

• They accelerate particles

• They absorb particles