Black Holes Follow Up Questions

What characteristic of black holes prevents even light from escaping?

• Its reflective surface

• Its color

• Its huge gravitational pull

• Its temperature

Who was the first scientist to propose the idea of a black hole?

• Isaac Newton

• Albert Einstein

• John Mitchell

• Stephen Hawking

When did John Mitchell first put forward the idea of a black hole?

• 1492

• 1601

• 1739

• 1793

What causes a stellar black hole to form?

• A star increasing in size and dispersing into space

• A star's core remains stable and does not change

• A supernova collapses due to gravity

• Two black holes merging together

What is a stellar black hole?

• A region in space with high electromagnetic radiation

• A tiny, extremely dense area formed from a collapsed supernova

• A large gap in the space-time continuum

• A cluster of stars forming a circular shape

How many black holes are estimated to be in the Milky Way galaxy?

• Hundreds

• Thousands

• Millions

• Billions

What causes the formation of a supermassive black hole at the center of a galaxy?

• A) A supernova explosion

• B) The merging of two neutron stars

• C) The collection of matter due to gravity

• D) A disruption in space-time fabric

According to scientists, what is believed to exist at the center of the Milky Way galaxy?

• A) A large asteroid

• B) An enormous black hole

• C) A massive star cluster

• D) A dark matter core

Which galaxy is mentioned as having a supermassive black hole in its center?

• A) Andromeda Galaxy

• B) Triangulum Galaxy

• C) Whirlpool Galaxy

• D) Spiral galaxy M81

Why are black holes considered to be invisible?

• They emit visible light.

• They are too small to be seen.

• Light cannot escape them, making them difficult to see.

• They are too far away from Earth.