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Practice English Speaking&Listening with: Top 10 Crazy WHAT IF Scenarios

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Top 10 CrazyWHAT IFScenarios

The universe is a vast and mysterious place, and there are so many scenarios where almost

anything can happen.

Have you ever considered what would happen if the Earth doubled in size?

Or what would happen if the supercontinent Pangaea never broke up?

Even if you havent thought of those specific questions, thesewhat ifscenarios show

how amazing and mind boggling the Earth and the universe can be.

10.

What Would Happen if Everyone Jumped at the Same Time and the Same Place?

In August 2012, The YouTube channel VSauce posed a question that many of us have probably

only considered if were visiting Amsterdam or Colorado.

His question: what if we somehow gathered up all seven billion people on Earth, stood

shoulder-to-shoulder, and then at the same time, everyone jumped?

While the logistics of the project would be a nightmare, we actually wouldnt need that

much space; probably about the size of Los Angeles.

So when we all jumped a foot in the air, would we be strong enough to move the earth when

we landed?

Or cause an earthquake?

Amazingly, wed actually be powerful enough to move the Earth.

However, we wouldnt notice.

It would only move 1/100 of the width of a single hydrogen atom and it wouldnt even

last, because the earth would bob back up again.

So in terms of world projects, lets scrap this one.

9.

What Would Happen if the Magnetic Poles Reversed?

One of the most feared Earthly events (thats bound to happen sometime in the future) is

the reversing of Earths magnetic field.

That means that the North Pole will become the South Pole, and vice versa.

We should also point out that this reversal does not mean that the Earth itself will physically

turn over, just its magnetic poles.

That means if youre standing on the equator with a compass, Canada and Russia will be

on the top of the Earth, but the compass will say they are south, while Antarctica and Australia

will be on the bottom of the planet, but they will be north according to the compass.

We know that this flip will happen because its already flipped several hundred times

in the history of Earth.

The last one happened 780,000 years ago.

That means the reversal could happen again at any time.

How will this affect the Earth and us humans who live on it?

One thing to remember is that it isnt like flipping a light switch.

Instead, its a process that can take anywhere from 1,000 to 10,000 years.

So we wont experience flooding or earthquakes or anything like that.

When it does start to happen, one thing that we may have a problem with is a weakened electrical

field.

That field helps block radiation from the sun.

In the weakened field, this may punch holes in the ozone layer, which could increase skin

cancer.

Also, another major problem would be satellites.

They can be damaged by solar storms and a bombardment of solar radiation might be too

much for them to handle.

This could lead to disruptions with technologies that rely on satellites, like smart phones.

Either satellites will have to be developed to deal with the solar radiation, or we will

have to find alternatives.

8.

What Would Happen If You Fired a Gun in Space?

Modern guns and ammunition dont need oxygen to fire.

That means they will work in space.

If you did fire a gun in space, the smoke will come out of the barrel in a sphere.

The bullet will fly off forever because the universe is always expanding.

Well, unless it hits Sean Bean, which movies tell us is probably inevitable.

Meanwhile, you will be pushed backwards because of the kickback of the gun.

This would be bad news because unless youre tethered to something, you will simply float

away because there is no resistance to stop you.

You would simply continue to float until you died from lack of oxygen or dehydration.

Its also possible to shoot yourself in the back in space.

If you are in freefall near a planet and you shoot, the bullet can orbit around the planet,

and depending on where the kickback pushes you, its possible for the bullet come back

and hit you in the back.

Finally, we never want to encourage suicidehowever, if you happen to be on the moon with

a handgun and you need to shoot yourself in the back, get to the top of a lunar mountain,

fire a bullet that goes 3,560 miles per hour at the horizonand then it could come back

and hit you in the back.

7.

What Would Happen if the Moon Disappeared?

In Despicable Me, the main character, Gru, plots

to steal the moon.

Sure, its an ambitious plan, but would it really affect Earth if the moon disappeared?

One major thing wed notice oceans is that tides wont be as strong.

The reason the moon impacts the tides comes down to Newtonian gravity.

When youre closer to something, gravity increases.

So when an ocean or loose earth is facing the moon, it essentially reaches towards the

moon and this draws water away from the shore.

However, the tides wouldnt completely disappear because the sun impacts them too.

Also, without the moon pushing the tides, the rotation of the Earth will slow down.

This, in turn, will make the days longer over thousands of years.

However, in the long run, the lack of a moon would become an even bigger problem because

the moon helps keep the Earth stable on its tilted axis.

The moon helps prevent gravitational forces from outside of the Earth, like from other

planets, from effecting Earths tilt.

Without the moon, the Earths tilt could vary by 85 degrees.

That means, without the moon, the Earth would change its tilt every few million years between

the sun rotating around the equator and rotating around the poles.

This would lead to dramatic shifts in climates.

6.

What Wouldve Happened if Pangaea Didnt Break Up?

About 300 million years ago, the supercontinent Pangaea formed from other continental units.

It started to break up about 175 million years ago and the continents slowly drifted to where

they are today, making it the last of the supercontinents.

However, what if it never broke up and it stayed a supercontinent?

Well, the bad news is that humans probably wouldnt have evolved.

A major driving force in developing new species from existing ones is geographical isolation.

When a species is isolated, it leads to new traits evolving because creatures experience

different selective pressures.

Another problem for species diversification is that most of the land on Earth would be

arid and hot because it would be centered on the equator, and moisture carrying clouds

would lose their moisture going inland.

This type of climate would be good for reptiles, but not so much for mammals.

5.

What Would Happen if the World Doubled in Size?

Lets say you went to bed and woke up the next morning, and suddenly the world had doubled

in size.

This includes doubling in mass, as well.

Providing your bed didnt collapse under you, the first thing youll notice is that

you feel really heavy.

Thats because the Earths gravity would double as well, and that means everything

is twice as heavy.

That means you would have to start to walk around and do stuff while, in essence, wearing

a body suit made up of your own weight.

Depending on your size, your bones and joints would struggle with the weight.

Our hearts would also be in serious trouble because with more gravity, our extremities

would pool with blood.

In order to deal with the pooling, your blood pressure would have to double.

Eventually, humans would evolve and become stronger, especially in the lower half of

the body.

Our legs would become much stronger to support our weight.

Another big thing youd notice is that tall trees would start to collapse because of the

weight, and theyd never grow again.

With twice the gravity, it would be harder to get water from the roots to the top of

the trees.

Instead, small trees might grow, or trees may never grow again.

4.

What Wouldve Happened if the Dinosaurs Didnt Go Extinct?

About 66 million years ago, 80 percent of life on Earth was wiped out.

This includes the dinosaurs.

There are several potential culprits in killing them off, such as a comet or an asteroid or

a supervolcano.

Or possibly Jeff Goldblum.

The point is, we cant be sure.

However, the Cretaceous-Paleocene extinction was most likely a combination event and the

death blow was a six-mile wide asteroid that hit the Earth in the Yucatán Peninsula in

Mexico.

This caused mass wildfires and a lot of ash and dust got into the atmosphere, which cooled

the planet and killed off a lot of the vegetation.

But what if that asteroid never hit Earth and the dinosaurs werent killed in a massive

die off?

Well, according to Damian Nance, a professor of Geosciences at Ohio University, theres

a good chance theyd still be alive today.

After all, dinosaurs ruled the Earth for 160 million years before they were wiped out,

so unless there was another catastrophic event, like the rise of a dinosaur disease, there

is a good chance they would have carried on living at the top of Earths food chain.

Theres even some speculation based on the way dinosaur brains were evolving before the

extinction that if they had not died off, dinosaurs could have evolved to havehuman-like

intelligence.

As for humans in this alternate reality, there is a good chance they wouldnt have evolved.

Mammals did live alongside dinosaurs, but they filled in niches and never became bigger

than the size of rodents.

They only evolved in the wake of the death of the dinosaurs because there was more food,

less competition for it, and fewer mammal-eating predators.

3.

What Would Happen if the Sun Died?

If the sun were to stop working, it would take a while for it to cool down, similar

to putting something warm in the refrigerator.

The bad news is that wed feel the impact within a week.

In 2015, the average temperature on Earth was 58.3 degrees Fahrenheit.

Well, within a week of the sun dying, the average temperature would drop to 0 degrees.

Then, within a year, average temperatures would drop to -100.

This would kill most plant life and the surface of the oceans would freeze.

However, it would take hundreds of thousands of years for them to freeze solid because

the surface ice would insulate the depths.

After several million years, our planet would be a constant, balmy temperature of -400 degrees.

As for what humans could do?

We could live in nuclear or geothermal habitats, or in submarines in the deepest parts of the

ocean.

Of course, food would become tough to come by because vegetation needs the sun to grow,

and on the surface, only large trees would survive more than a few years.

Finally, while the sun plays an important part in heating the Earth, its also important

because it keeps us in orbit.

If the sun were to die off, the Earth, which would now be a ball of ice, would stop circling

and fly off into space.

2.

What Happened if You Jumped Into a Hole Drilled Through the Middle of the Earth?

We want to start this one off by saying that it would be impossible to actually make a

tunnel from one side of the Earth to the other.

However, in theory, if we could dig through the Earth and you jumped in, what would happen?

If you ignore the rotation of the earth and friction, and dropped into the hole, you would

start off at a speed of zero.

Youd pick up speed as you got closer to the center of the Earth, reaching speeds of

17,671 miles per hour.

However, once you pass the center of the Earth, you would decelerate, and by the time you

reached the hole on the other side of the Earth, youd reach a speed of zero again,

and pop out of the hole.

The whole trip would take you 42 minutes, and hopefully youd have a quip ready for

the people waiting on the other side, likeI must have taken a wrong turn at Albuquerque!”

Or something else.

We dont know.

Youd have time to think of a great line while plummeting through the planet, is what

were saying.

1.

What Would Happen if You Fell Into a Black Hole?

Black holes are one of the most perplexing and intriguing mysteries of the universe.

Have you ever thought what would happen if you were to fall into one?

Well, its one of those good news/bad news type of scenarios.

It will also be a much different experience for people who may happen to see you fall

into the black hole.

For people who watch you fall in, they would see you get closer to the event horizon (which

is the point of no return), and as you did, they would see you stretch and contort, and

then they would see you slow down.

Then youd freeze, as if someone hit the pause button, and then theyd see you engulfed

by the heat of the event horizon and all youd leave behind is ashes.

As for you, the first thing that would happen is that youd be cloned, and the clone would

be incinerated.

Thats theyouthat your fellow space travelers saw turn to ash.

However, you wouldnt know that you were cloned and as you passed the event horizon,

you wouldnt feel anything; youd be in freefall because gravity wouldnt exist.

If you happen to fall into a small black hole, the bad news is that the force would stretch

you like a piece of spaghetti.

If it were a big black hole, like one thats millions of times the size of the sun, youd

continue to freefall and beyond the event horizon, the laws of physics break down.

Time and space dont really exist and youll continue to be pulled towards singularity,

which is a rupture in the space-time continuum.

It is at the center of the black hole where space becomes infinitely curved.

What happens there is anyones guess.

It could be another dimension, another part of space, or even behind a bookcase in the

past.

The Description of Top 10 Crazy WHAT IF Scenarios