Crumple dry paper (newspaper is fine) and place it on the bottom of the fire pit.
Crumple up some paper and place it in the center of the fire pit.
Crumple it up and see if it bounces back without wrinkles.
Crumple zones are a must on modern cars.
Crumple up some paper, which will act as your tinder, and place it in the center of the fire pit.
The Dutch-Belgian troops to the east of the Brussels highway were at once forced back by the mass of men moved against them, and it looked as if the whole defence would crumple up. But about 3 P.M.
Overlooking all smaller details, we may consider Asia to consist of a northern mass and a southern mass, too rigid to crumple, but not too strong to fracture, and an intermediate belt of softer rock which was capable of folding.
The tangential pressures which are known to be set up in the earth's crust - either by the contraction of the interior or in some other way - caused the deposits of this sea to be crushed up against the rigid granites and other old rocks of the peninsula and finally led to the whole mass being pushed forward over the edge of the part which did not crumple.