Quiz: Escaping a Black Hole

What is a black hole?

• A collapsed planet

• A collapsed star

• A type of galaxy

• A giant gas cloud

Why are black holes invisible?

• They emit no light

• They are too far away

• Their gravitational force traps light

• Both A and C

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What determines the strength of a gravitational field?

• Distance and time

• Mass and distance

• Speed and direction

• Shape and size

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Why do astronauts appear to "bounce" on the Moon?

• The Moon has no gravity

• The Moon's gravitational field is weaker than Earth's

• Their spacesuits are springy

• They are weightless

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What happens to objects within a black hole's event horizon?

• They orbit the black hole

• They escape the gravitational force

• They are pulled into the black hole

• They reflect light

What force is responsible for pulling objects toward one another?

• Magnetic force

• Gravitational force

• Electrostatic force

• Anti-gravity force

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Why do black holes produce a strong gravitational force?

• They are larger than stars

• They have immense mass in a small area

• They emit high levels of energy

• They are close to the speed of light

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What is a gravitational field?

• The area where an object exerts gravity

• The size of an object in space

• The distance between two objects

• The force that repels objects

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How can a spaceship escape a black hole?

• By staying close to its event horizon

• By keeping a safe distance

• By moving faster than light

• By using anti-gravity

What is the main reason stars collapse into black holes?

• Loss of light

• Decrease in gravitational force

• Increase in temperature

• Immense mass in a small area

Tags

NGSS.HS-PS2-4