Physics
Which statement best describes an igneous intrusion?

Magma explodes to the surface and forms a smooth outer layer of rock
Magma is injected into surrounding rock forming an igneous intrusive
Magma is exported to an open area and forms iron
Igneous intrusion for when ice crystals splash into lava

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Physics
Scalar Quantities are

Physical quantities which have no magnitude only and only direction
Physical quantities which have magnitude only and direction
Physical quantities which have no magnitude and no direction
Physical quantities which have magnitude only and no direction

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Physics
It is more difficult to walk on a sandy road than on a concrete road because

the friction between sand and feet is more than that between concrete and feet.
the sand is grainy but concrete is smooth.
the friction between sand and feet is less than that between concrete and feet.
sand is soft and concreter is hard.

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