Black Hole- medium

What is the boundary beyond which nothing, not even light, can escape from a black hole?

• Supernova

• Neutron star

• Singularity

• Event horizon

What causes light to curve and even orbit around a black hole?

• Dark matter

• Gravitational waves

• Spacetime bending

• Magnetic field

What are the ripples in spacetime created by the merging of black holes called?

• Gamma rays

• Gravitational waves

• Neutrinos

• Cosmic rays

What can the properties of gravitational waves tell us about black holes?

• Their temperature

• Their size and shape

• Their color

• Their chemical composition

What is the remnant core left behind by a black hole after passing the event horizon called?

• Neutron star

• Quasar

• Pulsar

• Singularity

What are the different types of black holes characterized by?

• Mass, spin, and electric charge

• Color, shape, and density

• Velocity, acceleration, and momentum

• Temperature, luminosity, and size

What is the point of infinite density at the center of a black hole called?

• Neutron star

• Singularity

• Event horizon

• Supernova

What is thought to exist at the center of most galaxies, millions or billions of times the mass of the Sun?

• Supermassive black hole

• Pulsar

• Quasar

• Neutron star

What is the theory that black holes emit particles and radiation due to quantum effects near the event horizon called?

• Hawking radiation

• Newton's law

• Quantum entanglement

• Einstein's theory

What might be key to understanding black holes completely according to the text?

• String theory

• Quantum mechanics

• General relativity

• Quantum gravity