Flashcard: Escaping a Black Hole

Front

What is a black hole?

Back

A black hole is a region in space where the gravitational force is so strong that nothing, not even light, can escape from it.

Front

How are black holes formed?

Back

Black holes are formed when a massive star collapses under its own gravity at the end of its life cycle.

Front

What is gravitational force?

Back

Gravitational force is the attraction between two objects with mass, which pulls them towards each other.

Front

Why do black holes have a strong gravitational force?

Back

They have immense mass concentrated in a small area, which creates a strong gravitational pull.

Front

Why are black holes invisible?

Back

Black holes are invisible because they emit no light and their gravitational force traps light.

Front

What is the relationship between mass and gravity?

Back

Gravity depends on the mass of objects; more massive objects exert a stronger gravitational force.

Front

What happens to light near a black hole?

Back

Light is trapped by the black hole's gravitational force, making it impossible to see.

Front

What is the effect of distance on gravitational force?

Back

The gravitational force decreases as the distance between two objects increases.

Front

Why do astronauts bounce on the Moon?

Back

Astronauts bounce on the Moon because the Moon's gravitational field is weaker than Earth's.

Front

What is the event horizon of a black hole?

Back

The event horizon is the boundary around a black hole beyond which nothing can escape.