Xinxiang city in 2008 experimental operation examination paper.
First, check the equipment.
Physics: small light bulb (2.5V, electric power less than 1W), 2 dry batteries (Class A batteries), voltmeter, ammeter, sliding rheostat, switch and several wires.
Biology: microscope (with sufficient light), permanent longitudinal section of root tip.
Chemistry: magnesium strip, dilute hydrochloric acid, tweezers, test tube, test tube rack, tube brush, wiping paper.
Second, the experimental content (14 points)
Physics (7 points): Measure the rated power of small bulbs.
Experimental content: 1. Connect the circuit according to the circuit diagram (3 points)
2. Measure the electric power of small bulbs (3 points)
U/v I/A P/w
3. Dismantle the circuit (1 min)
Biology (4 points): Observe the structure of root tip.
Experimental content:
1. Show a movie (1 min)
2. Observation (3 points)
Chemistry (3 marks): Explore the energy changes in chemical reactions.
Experimental content:
The experiment shows that the reaction between magnesium tape and dilute hydrochloric acid is a thermal reaction.
III. Finishing equipment (1 min)
Total score-invigilator-