WorksheetsBlackholes
Total questions: 22
Worksheet time: 16mins
Name
Class
Date
1.
How Does A Black Hole Distort Light
a)
It Makes A Ring Of Light Around It's self
b)
It Curves Light at a 290 degree angle
c)
It Makes The Sky Around It All White For A mile
d)
It is unknown how black holes distort light
2.
When Your Body Goes Inside A Black Hole The Stretching effect is called what
a)
spaghettification
b)
stretchification
c)
longification
d)
sausageification
3.
What is a black hole?
a)
A wormhole that leads to another galaxy.
b)
An object with such a strong gravitational pull nothing can escape it.
c)
A rip in time.
d)
The end of the universe.
4.
How big is a typical black hole?
a)
About the size of a basket ball.
b)
About 1000 solar masses.
c)
About 10 to 100 solar masses.
d)
About the size of Earth.
5.
What happens when the black holes in a binary black hole collide.
a)
Nothing.
b)
A sun is created.
c)
A burst of energy 50 times more powerful than all the stars in the universe is created.
d)
A galaxy is formed.
6.
How are black holes formed?
a)
Black holes form in the core of a massive star, which runs out of fuel and collapses, exploding as a supernova.
b)
From a super nova exploding
c)
Formed from dead atoms
d)
Formed from dead stars
7.
why do stellar-mass black holes form?
a)
chose this
b)
dont answer
c)
by super nova explosion.
d)
A stellar black hole (or stellar-mass black hole) is a black hole formed by the gravitational collapse of a massive star.
8.
Is a black hole really a sphere?
a)
None of the above
b)
It is a dark sphere
c)
A black hole is a sphere in the sense that everything that goes within its Schwarzschild radius (the distance from the center of the black hole to the event horizon) cannot escape its gravity.
d)
It is not a sphere
9.
How dense does something have to be to be a black hole?
a)
It is a dence space object
b)
General relativity predicts that as an object collapses to form a black hole, it will eventually reach a point of infinite density. ... (Typically, M for a black hole in our galaxy is around 10 times the mass of the Sun, but for supermassive black holes at the centers of galaxies it can be millions or even billions.)
c)
None of the above
d)
It is not dece space object
10.
How does time change in a black hole?
a)
Black holes are so massive that they severely warp the fabric of spacetime (the three spatial dimensions and time combined in a four-dimensional continuum). ... The light will appear to continually slow down as it approaches the black hole, ultimately reaching a complete dead stop at the event horizon.
b)
It changes when you go inside it
c)
It dosent affect time
d)
None of the above
11.
How does black holes affect time?
a)
It dosent affect time
b)
None of the above
c)
I know that black holes are formed by the collapse of stars and a black hole has an enormous attracting force. The gravitational pull is so powerful that even light cannot escape. As we all know, gravity also affects light. So, due to gravity, time slows.
d)
It affect time by going in it
12.
What is the Schwarzschild radius?
a)
None above the others
b)
Inside the black hole
c)
It dosent have one
d)
The Schwarzschild radius (sometimes historically referred to as the gravitationalradius) is the radius of a sphere such that, if all the mass of an object were to be compressed within that sphere, the escape velocity from the surface of the sphere would equal the speed of light.
13.
Can we see a black hole?
a)
We can see a black hole
b)
Though we cannot "see" a black hole itself (since not even light can escape thehole's gravitational field), we may see the hole's effects on nearby matter. For example, if gas from a nearby star were sucked towards the black hole, the intense gravitation al energy would heat the gas to millions of degrees
c)
We cant see a black hole
d)
None of the above
14.
Why is time affected by gravity?
a)
It does affect time
b)
It dosent affect time
c)
The curvature of space-time is gravity. Light must always travel at a constant speed. ... This means time has passed faster for the clock in the weaker gravitational field. An observer in the weaker gravitational field will see the clock in the stronger gravitational field running slower.
d)
None of the above
15.
The event horizon of a black hole represents:
a)
The moment when the black hole formed.
b)
The boundary beyond which nothing can escape.
c)
The density limit of a black hole.
d)
None of these
16.
Infinitely dense points that make the core of black holes.
a)
Accretion Disk
b)
Event Horizon
c)
Singularity
d)
Worm Hole
17.
The object thought to be a super massive black hole at the center of the Milky Way galaxy is known as:
a)
Sagittarius A*
b)
Alpha Centauri
c)
Eta Carinae
d)
None of these
18.
How big does a telescope need to be to detect a blackhole?
a)
Football field
b)
Yankee stadium
c)
Earth
d)
Jupiter
19.
What is the name of the first "photographed" blackhole?
a)
EHT
b)
M87
c)
LIGO
d)
Sgr A*
20.
What spews out of a supermassive black hole?
a)
water jets
b)
gravity rocks
c)
mass and time
d)
plasma jets
21.
What is the name of the combined telescopes that detected the supermassive black hole?
a)
ALMA
b)
Discovery
c)
Sputnik
d)
Event Horizon
22.
Extra credit: What is Mrs. Maddox's favorite object in the night sky?
a)
Moon
b)
Sun
c)
Orion's belt
d)
Scorpio
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