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Black Holes
Contributed by: Rossi
  • 1. What powerful force allows black holes to absorb light?
A) all the answers
B) Nuclear fusion
C) Gravity
D) electromagnetism
E) Nuclear bonding
  • 2. How do scientists know black holes exist?
A) by observing objects and light around black holes
B) All of these answers
C) by viewing black holes with powerful telescopes
D) by running experiments on the Sun
  • 3. How do black holes form?
A) when nuclear bombs explode
B) when asteroids hit stars
C) when comes strike planets
D) when giant stars explode
  • 4. Where do super massive black holes likely exist?
A) at the center of galaxies
B) In the center of a planet
C) at the center of the solar system
D) Inside gas giant planets
  • 5. True or False: Black holes are invisible because they don't reflect light.
A) True
B) False
  • 6. What do we call the boundary around a black hole where nothing can escape its gravity?
A) pulsar
B) singularity
C) Event horizon
D) Supernova border
  • 7. What is the center of a black hole called?
A) Pulsar
B) Iris
C) Supernova
D) singularity
  • 8. What is it called when an aging star explodes?
A) singularity
B) pulsar
C) supernova
D) iris
  • 9. True or False: Black holes were first discovered by Ancient Egyptians.
A) False
B) True
  • 10. What makes the gravity of a black hole so strong?
A) Nuclear reactions at its core
B) it's small size and large mass
C) It's large size and small mass
D) It spins at a rate faster than light
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