This podcast explains early models of planet movement. The ideas of ancient astronomers and how things have evolved.

This podcast explains the types of volcanoes and reasons for them. Association between plate boundaries and volcanoes.

This podcast explains the different causes and characteristics of earthquakes> it also covers how earthquakes are measured.

This podcast explains the division of the Earth's crust into plates. The plates move forming convergent and divergent boundaries and many land formations.

This podcast explains sound waves, frequency, Doppler effect, pitch, decibels, and ultrasound

This podcast explains the difference between work and power. How energy, work, and power are related. How simple machines make work easier and more efficient.

Potential and kinetic energy, types of energy, energy transformations and the conservation of energy.

Describes the different types of friction. Defines the effects of air resistance and gravity. Defines the concept of free fall and terminal velocity.

Defines speed, velocity, and acceleration. Calculations for speed and acceleration and how to interpret speed and acceleration graphs.