But their victory was cut short by a commotion at the back of the room. Kaitlyn, the quiet student who never spoke, stood frozen beside an open circuit board. A small compass on her desk was spinning wildly—north, south, north, south—even though no magnets were nearby.
“You two are actually good at this,” she said.
“So the broken wire is making an unstable magnetic field,” Kaitlyn said, her voice steadier now. mcgraw hill ryerson science 9 pdf
They reported the loose wire to their teacher, who thanked them and fixed the circuit before anyone got shocked. Kaitlyn smiled—a real one.
Maya pointed to a diagram in the book. “You didn’t rub it long enough. Electrons move from your hair to the balloon. Negative charge builds up. Opposite charges attract the wall.” But their victory was cut short by a
Maya flipped through her worn copy of McGraw Hill Ryerson Science 9 , searching for the section on static electricity. Outside the classroom window, rain streaked the glass. Inside, her lab partner, Leo, was trying to stick a balloon to the wall.
If you’d like, here’s a short, original story instead, inspired by a Grade 9 science class using that very textbook: “You two are actually good at this,” she said
Leo grinned. “Best field trip we never left the classroom for.”