Physics
What is the force of attraction between any two bodies by virtue of their masses is called?

Electromagnetic Force
Gravitational Force
Centripetal Force
Nuclear Force

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

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

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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 flashes of light
They generate ultrasonic sound waves
They can see the objects in darkness

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Physics
A white and smooth surface is

Good absorber and good reflector of heat
Bad absorber and good reflector of heat
Bad absorber and bad reflector of heat
Good absorber and bad reflector of heat

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