Quick answer: Air is a mixture of gases, mainly 78 % nitrogen and 21 % oxygen, and it has mass: about 1.2 kg per cubic metre. This grade 7 science quiz checks atmospheric pressure with 10 multiple-choice questions and instant feedback; every answer comes with a short explanation.
This atmospheric pressure quiz for grade 7 science has quick multiple-choice questions with instant feedback. Need a refresher first? Read the lesson or do the worksheet on atmospheric pressure.
Choose the one correct option for each question. The wrong options come from real mistakes, such as thinking air has no mass or mixing up pressure units, so read the explanation after each answer to see why it is right.
