How is the direction of a magnetic field at a location indicated? *A magnetic field is always directed directly opposite to the direction that the north pole of a small compass needle points at the location. A magnetic field is always directed in the direction that the north pole of a small compass needle points at the location. A magnetic field is always directed perpendicular and vertically upward from the direction that the north pole of a small compass needle points at the location. A magnetic field is always directed toward due north

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.