Physics
Intensity of sound at a point is ____ its distance from the source.

directly proportional to
inversely proportional to square of
directly proportional to square of
inversely proportional to

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Physics
The bats can fly in the dark because

They have weak legs and are likely to be attacked by predators
They generate ultrasonic sound waves
They generate flashes of light
They can see the objects in darkness

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Physics
Which statement best describes an igneous intrusion?

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

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