Across
- 2. has a magnetized needle that aligns itself with Earth’s magnetic poles so that one end points north and the other south.
- 4. an explosive powder made of saltpeter and other materials.
- 5. to protect against disease by transmitting a disease-causing agent to a person, stimulating the body’s defensive reactions.
Down
- 1. to make quantities of an item by using standardized designs and dividing steps of production among the workers.
- 3. - individual characters made of wood or metal that can be arranged to create a printing job and then be used over again.