IPC Final Exam Review

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as PE = mgh (mass x gravity x height).

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated using the formula KE = 1/2 mv² (1/2 x mass x velocity squared).

Front

What happens to gravitational potential energy as an object falls?

Back

As an object falls, its gravitational potential energy decreases while its kinetic energy increases.

Front

What is the relationship between potential energy and kinetic energy in a closed system?

Back

In a closed system, the total mechanical energy (potential + kinetic) remains constant, meaning energy is conserved.

Front

What is the immediate action to take if salt water splashes in your eyes?

Back

Flush eyes with water immediately to remove the irritant.

Front

What is the principle of conservation of energy?

Back

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

Front

What is the formula for calculating kinetic energy?

Back

The formula for calculating kinetic energy is KE = 1/2 mv².

Front

What is the effect of increasing height on gravitational potential energy?

Back

Increasing height increases gravitational potential energy, as it is directly proportional to height.

Front

What is diffraction?

Back

Diffraction is the bending of waves around obstacles and openings, which can cause spreading of waves.