From Project 2061: Benchmarks for Science Literacy: Understands basic features of the Earth Level III (6-8) Knows the composition and structure of the Earth's atmosphere (e.g. temperature and pressure in different layers of the atmosphere, circulation of air masses) Knows ways 
(Benchmarks for Science Literacy; Understands; basic features of the Earth Level III (6-8)
Benchmarks for Science Literacy
Understands
basic features of the Earth Level III (6-8