Qualitatively describe compressions as areas of higher pressure where particles are closer together, and rarefactions as areas of lower pressure where particles are more spread out.

Quick explanation

Qualitatively describe compressions as areas of higher pressure where particles are closer together, and rarefactions as areas of lower pressure where particles are more spread out

• This point belongs to Sound, especially Sound outcomes.
• You need to be able to qualitatively describe compressions as areas of higher pressure where particles are closer together, and rarefactions as areas of lower pressure where particles are more spread out.
• The key ideas to know are Describe.
• Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.