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How are most stellar black holes formed?
When the Sun explodes
When a massive star collapses after running out of fuel
When a comet enters Earth's atmosphere
When two planets collide
Which element marks the end of energy-producing fusion inside a massive star?
Hydrogen
Iron
Oxygen
Helium
What is a black hole's event horizon?
A cloud of gas surrounding the black hole
The point beyond which nothing can escape
The centre of the black hole
A ring of stars around the black hole
Why can't light escape from a black hole?
There is no oxygen
Space is too dark
Light is too slow
Its gravity is too strong
What is believed to be at the centre of a black hole?
A planet
A galaxy
A singularity
A giant star
What would someone far away see if you fell towards a black hole?
You bounce away
You appear to slow down
You disappear instantly
You speed up continuously
What is "spaghettification"?
The stretching of an object caused by strong gravity
A star turning into a planet
A black hole becoming invisible
A black hole exploding
Which type of black hole could allow you to cross the event horizon before being stretched?
A white dwarf
A tiny asteroid
A neutron star
A supermassive black hole
Where are supermassive black holes usually found?
Inside planets
On the edge of the Solar System
At the centres of galaxies
Between Earth and the Moon
Approximately how massive can supermassive black holes be?
Smaller than Jupiter
Millions or billions of times the mass of the Sun
About the same mass as Earth
Twice the mass of the Moon
According to the video, how do supermassive black holes probably grow?
By creating new stars
By collecting sunlight
By absorbing matter and merging with other black holes
By freezing nearby planets
What did Stephen Hawking predict black holes emit?
Gamma bursts
Magnetic waves
Solar wind
Hawking radiation
What effect does Hawking radiation have on black holes?
They stop attracting objects
They become larger every day
They become stars again
They slowly lose mass over time
What may eventually happen to black holes after an extremely long time?
They freeze forever
They turn into planets
They may completely evaporate
They become comets
Why do scientists still not fully understand what happens at a singularity?
Current physics cannot fully explain the extreme conditions
Black holes are too small to study
It is too far from Earth
No one has looked through a telescope
Which statement best describes a black hole?
A dying planet covered in darkness
An object with gravity so strong even light can’t escape
A cloud made entirely of gas
A giant empty hole in space with no gravity
