Structures
Hoow can the tallest building in the world never fall down
Even though the building is so tall the structure that it is made out of makes it not fall.
How deep underground does the Earth's crush end at
It ends at 60 km deep
Why are train tracks so strong
The train tracks need to be so strong when the train tumbles along the tracks the tracks wont break.
How hot is the inner core
5200 degrees celcius
Why is the diefenbunker so safe.
If there are wars going on or nukes they go into the bunker and stay as safe as possible
how deep is the inner core
6400 km deep
How can bridges go on water with out sinking
There are rocks underwater
How deep is the mantle
2900 km deep
Why are trussel bridges made out of steel
Trussel bridges are made out of steel because the trains have so much weight, when its on the bridge it wont break.
How deep is the outer core
5100 km deep