A scatterplot is used to represent a correlation between two variables. There are two types of correlations: positive and negative. Variables that are positively correlated move in the same direction, while variables that are negatively correlated move in opposite directions.
Thermal energy, or heat, is the energy that comes from the movement of atoms and molecules in a substance. Heat increases with increases in the speed that these particles move. Geothermal energy is the thermal energy in the earth. Motion energy is energy stored in the movement of objects
The movement of molecules across a cell membrane in which no energy is required (i.e. diffusion) is called __________ transport and the movement of molecules across the membrane in which energy (i.e. ATP) is required is called __________ transpo rt.