Laws

What is the First Law of Thermodynamics?

• Energy associated with motion, such as energy in flowing water.

• Whenever energy is converted from one form to another, it is a physical or chemical change.

• Combinations of two or more different elements held together in fixed proportions.

• A type of matter with a unique set of properties that cannot be broken down.

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What is Newton's First Law of Motion?

• An object in motion stays in motion unless acted upon by an external force.

• The force acting on an object is equal to the mass of that object times its acceleration.

• For every action, there is an equal and opposite reaction.

• Energy cannot be created or destroyed, only transformed.

Which law explains why we need to wear seatbelts in a moving car?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Law of Conservation of Energy

What does the Law of Conservation of Mass state?

• Mass can be created and destroyed in chemical reactions.

• Mass is conserved in a closed system during chemical reactions.

• Mass is always equal to energy in a system.

• Mass is inversely proportional to energy.

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According to Boyle's Law, what happens to the pressure of a gas if its volume decreases while temperature remains constant?

• Pressure increases

• Pressure decreases

• Pressure remains constant

• Pressure becomes zero

What is Ohm's Law?

• The current through a conductor between two points is directly proportional to the voltage across the two points.

• The resistance of a conductor is inversely proportional to its length.

• The power dissipated in a conductor is proportional to the square of the current.

• The voltage across a conductor is inversely proportional to the current through it.

Which law is used to calculate the gravitational force between two masses?

• Newton's Law of Universal Gravitation

• Coulomb's Law

• Hooke's Law

• Kepler's Third Law

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What does Charles's Law state about the volume of a gas?

• Volume is directly proportional to temperature at constant pressure.

• Volume is inversely proportional to temperature at constant pressure.

• Volume is directly proportional to pressure at constant temperature.

• Volume is inversely proportional to pressure at constant temperature.

Which law is demonstrated by a ball bouncing back after hitting the ground?

• Newton's Third Law of Motion

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Law of Conservation of Energy

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What is the Second Law of Thermodynamics?

• Energy cannot be created or destroyed, only transformed.

• The entropy of an isolated system always increases over time.

• For every action, there is an equal and opposite reaction.

• The force acting on an object is equal to the mass of that object times its acceleration.

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