Physics
Which statement best describes an igneous intrusion?

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

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Physics
The mass defect is the result of what action occurring?

Mass being converted to energy when protons and neutrons break apart in a nucleus
Protons and electrons being attracted to each other
Energy being converted into moles of atoms when neutrons break apart protons
Mass being converted to energy when protons and neutrons bind together in a nucleus

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Physics
Planets are

luminous heavenly bodies that do not twinkle
non-luminous heavenly bodies
luminous heavenly bodies revolving around a star
luminous heavenly bodies that twinkle

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