How should the student modify the setup to investigate how a motor works? A. Attach a crank or use a student finger to force the coil of wire to rotate.
B. Remove the magnet from the model.
C. Place an iron nail inside the coil of wire.
D. Replace the lamp with a battery.

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water