Cosmic Rays and the Oh-My-God Particle

What was the kinetic energy of the Oh-My-God particle?

• 300 exaelectron volts

• 100 exaelectron volts

• 150 exaelectron volts

• 500 exaelectron volts

Who first noticed the increase in radiation levels with height?

• Victor Hess

• Theodore Wulf

• Marie Curie

• Henri Becquerel

What is Cherenkov radiation?

• Radiation emitted when particles travel faster than light in a vacuum

• Radiation emitted when particles travel faster than light in a medium

• Radiation emitted by cosmic rays in space

• Radiation emitted by decaying radioactive elements

Which facility in Argentina is dedicated to monitoring high-energy cosmic rays?

• Fly's Eye Observatory

• Pierre Auger Observatory

• Telescope Array Project

• Large Hadron Collider

What percentage of cosmic rays are heavier nuclei like iron?

• 10%

• 5%

• 1%

• 0.1%

What is believed to be a source of lower energy cosmic rays?

• Black holes

• Supernova explosions

• Gamma ray bursts

• Quasars

What is the GZK limit related to?

• The maximum speed of cosmic rays

• The minimum energy of cosmic rays

• The maximum energy of cosmic rays

• The minimum distance cosmic rays can travel

What is a significant challenge for manned interplanetary travel?

• Cosmic rays

• High temperatures

• Lack of oxygen

• Gravitational pull

What did Apollo astronauts report seeing outside Earth's magnetosphere?

• Dark matter

• Auroras

• Bright stars

• Strange flashes of light

What potential does studying cosmic rays hold?

• Cracking mysteries of space-time

• Developing new energy sources

• Exploring new planets

• Understanding the weather