Physical Science Exam Review

Front

For every action there is an equal and opposite...

Back

reaction (Newton's Third Law of Motion) states that for every action, there is an equal and opposite reaction.

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t). It is measured in watts.

Front

What is the power of a kitchen blender if it can perform 3,750 joules of work in 15 seconds?

Back

250 watts (Power = 3750 J / 15 s).

Front

Which energy-conversion process occurs whenever coal is burned at a power station?

Back

Chemical to electrical energy conversion.

Front

What is considered a neutral pH level?

Back

A pH level of 7 is considered neutral.

Front

If a solution has less than the maximum amount of solute that can be dissolved in a given amount of water, it is considered...

Back

Unsaturated.

Front

What is the definition of kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv².

Front

What is the law of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is the formula for calculating density?

Back

Density (D) = Mass (m) / Volume (V).