Physical Science Final Review

Front

At higher temperatures, what happens to the particles in an object?

Back

Particles in an object move faster.

Front

What is Newton's 2nd law of motion?

Back

Force = Mass multiplied by acceleration.

Front

What is the transfer of heat energy by direct contact called?

Back

Conduction.

Front

Identify the reactants in the combustion of methane: CH4 + 2 O2 → CO2 + 2 H2O.

Back

CH4 and 2 O2.

Front

How do you calculate net force?

Back

Net force is the vector sum of all forces acting on an object.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic Energy = 1/2 * mass * velocity^2.

Front

What is the principle 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 law of universal gravitation?

Back

Every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the definition of acceleration?

Back

Acceleration is the rate of change of velocity per unit time.