Laboratornye Po Fizike 8 Klass Korshak Savchenko Liashenko Direct

The year ended with Light Phenomena . alex darkened the room to study reflection and refraction . Using a glass prism and a ray box, he watched light bend as it entered the glass—the same principle that makes a straw look broken in a glass of water. For his final lab, he measured the focal length of a lens , moving a screen until a candle flame suddenly snapped into sharp, upside-down focus. Key Lab Topics covered in the Korshak textbook:

Constructing images using lenses and measuring their focal length. laboratornye po fizike 8 klass korshak savchenko liashenko

Comparing heat quantities and measuring specific heat. The year ended with Light Phenomena

Next came Electromagnetic Phenomena . Alex wound wire around an iron nail to create an electromagnet . He was amazed when a simple battery turned a piece of junk metal into a magnet strong enough to pick up paperclips. He then explored the magnetic field of a permanent magnet using iron filings, which mapped out invisible lines of force like a hidden fingerprint. For his final lab, he measured the focal

As the snow fell outside, the class moved to Electrical Phenomena . Alex felt like an engineer as he assembled his first circuit using a battery, a bulb, and a switch. He learned to use an Ammeter and a Voltmeter , realizing that current is like water flow while voltage is the pressure pushing it. He spent one afternoon proving Ohm's Law , adjusting a rheostat and watching the needle dance across the scale, confirming that as resistance goes up, the current fades.