Earth Science Rocks! App logo 1.1 Observations and Inferences Observations Inferences Classification 1.2 Scientific Notation 1.3 Scientific Measurement Length Temperature Time Volume Mass 1.4 Density Formula Temperature and Density Pressure and Density Buoyancy 1.5 Graphing X-axis Y-axis Direct relationship Indirect Relationship Cyclic Relationship Dynamic Equilibrium 1.6 Rate of Change Formula 1.7 Earth’s Layers Hydrosphere Atmosphere Lithosphere Biosphere Crust Plastic Mantle Stiffer Mantle Outer Core Inner Core 2.0 Earth’s Shape and Gravity Oblate spheroid Gravity Distance and gravity relationship Mass and Gravity Relationship 2.1 Maps Compass Points Legend Scale 2.2 Latitude & Longitude Latitude Longitude Degrees, minutes, seconds 2.3 Polaris North Star Polaris altitude = Latitude Big Dipper 2.4 Time Ch