Name the main longitudinal biomes.

Define longitudinal wave.

Name the main constituents of biogas.

Arrange an experiment to demonstrate the formation of longitudinal wave.

Define biome.

Differentiate between transverse waves and longitudinal waves.

Name the two main consituents of baking powder.

Explain why (or how): Solids can support both longitudinal and transverse waves, but only longitudinal waves can propagate in gases.