Mcgraw Hill Ryerson Science 9 Pdf -

Maya grabbed the textbook and flipped to the electricity unit. “Electromagnetism,” she murmured. “An electric current creates a magnetic field. If the compass is moving without a magnet, there’s stray current somewhere.”

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.”

Leo grinned. “Best field trip we never left the classroom for.” mcgraw hill ryerson science 9 pdf

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.

Leo pointed at the frayed wire near the power supply. “That’s not supposed to spark like that.” Maya grabbed the textbook and flipped to the

They reported the loose wire to their teacher, who thanked them and fixed the circuit before anyone got shocked. Kaitlyn smiled—a real one.

“You two are actually good at this,” she said. If the compass is moving without a magnet,

“It’s not working,” he grumbled.