Why can’t I dig a hole to the other side of the Earth?

Why can't i dig a hole to the other side of the earth

In this blog we firstly talk about  Why can't i dig a hole to the other side of the earth.

It seems like it should be a simple task:

Dig deeply enough straight down and you should strike sunlight on the other side of the planet. But before you break a sweat while breaking ground, know this.your hole will lead to a dead end. Why? Behold, the whole hole truth as we examine every obstacle to your shortcut through the soil

1.  Earth’s Crust:-

earth crust

High or low, wherever you go on the planet’s surface, you’re traveling on or above the Earth’s Crust 1. Our planet’s outer layer began taking shape 4.5 billion years ago atop the fireball of asteroids, comets, and other space debris that clumped into a gooey lump to form Earth. As the surface cooled and hardened, Earth’s crust was formed. It comes in two types:

When you reach down and feel ground, you’re touching continental crust. It ranges from 6 million (10 km) up to 47 miles (75 km) deep under mount Everest, Earth’s tallest mountain. Continental crust consists of less dense and much older rock than oceanic crust

Oceanic crust is about 4 miles (7 km) thick at the bottom of the deepest ocean trenches. It’s still taking shape in this mid-ocean ridges, where molten rock erupts form cracks in the ocean floor and cools to form new crust.

Neither crust seems particularly thick, right? Tell that to the geologists and mining companies that tried digging through it. Despite using mid-ocean ridges as a starting point for digging operations, they haven’t been able to pierce the crust. It’s too tough, fiercely hot, and full of hazards, form pockets of molten rock to lakes of boiling sulfur.

2. The Mantle:-

Earth layers

Even if you manage to dig through the Earth’s Crust. You’ve literally only scratched the surface of the planets. Below lies the Mantle 2.a layer of semi-molten metals such as iron, magnesium and aluminum. The heat and pressure here are intense enough to compress carbon into diamonds, the hardest natural material on earth. The easiest way to reach the mantle is to ride the oceanic crust.( It sinks slowly to the mantle in a process called subduction.) Once it reaches the mantle, oceanic crust melts and returns to the surface as magma in mid-ocean ridges, Where it’s recycled into new crust. The whole process takes about 200 million years. So you might want to pack a toothbrush.

3. The outer and inner cores

A spherical mars-size sea of molten iron and nickel swirls 1,800 miles (2,900 km) beneath your feet. It flow around an inner core 3 of iron two-thirds the size of the moon. (this flow of liquid iron around the solid inner core is what creates the inner core exceed 10,000 degrees Fahrenheit (5,600 degrees Celsius)—hotter  than the surface of the sun—yet the intense pressure here locks the molten iron into a solid sphere. Good luck digging through that.

4. The Big Squeeze

The deeper you dig into earth, the deeper your troubles. Gravity pulls trillions and trillions of tons of rocks and metals towards the planet’s center, and the weight of all that rough stuff above your head increases as you dig. The pressure in the inner core is 3.5 million times the air pressure you feel on the planet’s surface. Your body would suffer serious damage once your hit 27 times the surface pressure.

5. Tug-of-war

If not for the crushing pressure it creates around you. Gravity would be your best buddy during the long haul to the center of the Earth. It’s all downhill to the Earth’s inner core, after all, and you’d actually experience zero gravity at the exact center of the planet (the vast mass of all that molten metal and roch around you pulls you in all directions and cancels gravity’s effect). But you’ve only made it to the halfway point. You must repeat all the backbreaking, physics-defying work that got you here—except now gravity is working against your exit tunnel through the opposite half of the planet. That’s roughly 3,958 miles (6,370 km) of molten metal and solid rock you’ll need to dig through, all of it bouncing off your head as you climb up, up and up toward the planet’s surface.

6. Geography

More than 70 percent of the earth’s surface is covered with water, which means you’re much more likely to strike seawater than sunlight when you finally reach the other side of the planet. Try to diga hole to china form the united states and you’d end up all wet under the Indian ocean. If you’re determined to get to bottom of things through an 8,000-mile (12,875-km) hole in the ground, stick to these start-and-end spots on opposite end of the globe. 

Why is Earth special?

Earth is a special spot in the solar system for so many reasons its sprawling continent, its blue seas, its nearly limitless variety of ice-cream flavors. But one earthly thing stand out above the rest, its earthlings. ours is the only planet currently know to harbor life. In fact, Earth's unique combination of air, water, and land nurtures life of every sort, from microscopic amoebas to submarine size blue whales.

What conditions on Earth make it so favorable for life?

Earth's atmosphere not only provides the right mix of breathable air for animals and plants, but it combined with an oxygen rich ozone layers and the planet's electromagnetic field also acts as a force field against solar radiation and deadly space debris. the solar system's other planets are typically too hot or too cold to support liquid water, but earth is just right. Oceans cover nearly 70 percent of the planet's surface and are a source of the water vapor responsible for our weather.

Why is the Earth Round?

Actually, it's not perfectly round. it's an "oblate spheroid " a sphere that's slightly wider at the equator than at the poles. Gravity squashed earth and the solar system's other planets into spherical shapes back when they formed from clouds of dust and gas. Earth's rotation is what causes its slight bulge around the middle.