Gravitational Waves
Name one example of where gravitational waves may originate.
Answer may vary. Possible answers include:
Big stars orbiting each other
Black holes merging
What does the acronym "LIGO" stand for?
Laser Interferometry Gravitational Wave
What is the boundary called where not even light can escape from a black hole?
The Event Horizon
At what speed does gravitational waves move at?
Gravitational waves move at the speed of light.
What machinery does LIGO use to detect gravitational waves?
An interferometer.
Where is all the mass of the black hole concentrated?
In Einstein's Theory of Relativity, what did Einstein theorize about gravity?
Gravity is not an invisible force; instead, gravity is the warping of a cosmic "blanket" called space-time.
On what date did LIGO detect a significant gravitational wave that originated from two black holes merging a billion years ago?
September 14, 2015
What is the density of the singularity?
What are the two types of gravitational waves discussed during our presentation?
Continuous Gravitational Waves
Compact Binary Inspiral Gravitational Waves
Give the names of the two cities where LIGO was set up.
Hanford
Livingston
The two black holes begin to rotate each other. As the black holes come closer together, they rotate faster around each other.
What phenomenon creates Continuous Gravitational Waves?
A single body (mass) spinning at a constant speed.
What long did the gravitational wave that was discovered by LIGO on 9/14/2015 travel from its original source?
The gravitational wave travelled for 1 billion years.
Once the black holes merge, name two main events that happen.
The event horizon increases in size.
Gravitational waves are released into space-time.