Physical Science Exam Review--Physics Section

Front

What is refraction?

Back

Refraction is the bending of waves when they pass from one medium to another, caused by a change in their speed.

Front

How do you calculate acceleration?

Back

Acceleration is calculated using the formula: a = (final velocity - initial velocity) / time.

Front

In which medium can sound not travel?

Back

Sound cannot travel in a vacuum.

Front

What remains constant when comparing mass on Earth and the Moon?

Back

Mass remains constant; it does not change regardless of location.

Front

What can be inferred if object #1 is positively charged and object #2 is repelled?

Back

Object #2 is positively charged.

Front

What is the formula for calculating weight?

Back

Weight is calculated using the formula: Weight = mass × gravitational acceleration (W = m × g).

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is the principle of conservation of energy?

Back

The principle states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the definition of velocity?

Back

Velocity is the speed of an object in a specific direction.