2011 Anhui High School Entrance Examination Physics Experiment Operation Procedures and Scoring Criteria

2011 High School Entrance Examination Physics Experiment Operation Test

Questions and Experimental Equipment Operation Steps Scoring Standard Full Score Score

1. Use a balance to measure the mass of a solid block

1. A set of pallet balances and weights

2. A solid block 1. Observe the experimental equipment and record the maximum weight of the balance value, the minimum division value of the balance's vernier scale. (1 point) 1

2. Adjust the balance of the scale 1. Place the balance on a horizontal table and use tweezers to move the vernier to the zero mark of the scale (0.5 points) 1

2. Adjust the balance nut until the pointer points to the center of the index plate or the number of left and right swings is equal (0.5 minutes).

3. Use a balance to weigh the mass of the block 1. Place the object in the left pan of the balance, use tweezers to add and subtract weights to the right pan in order from large to small, and adjust the position of the cursor on the scale until the beam returns to balance (1 point) 2.5

< p>2. Read the total mass of the weights on the right disk of the balance and the mass indicated by the free scale (1 point), and calculate the mass of the solid object measured (0.5 points)

4. Arrange the equipment and use tweezers to place the weights Return to the box, move the game code back to the zero mark; put the equipment back to its original place (0.5 points). 0.5

2. Use a spring dynamometer to measure the buoyancy force

1. A spring dynamometer

2. A beaker containing water

< p>3. One solid block and one thin wire. 1. Observe the experimental equipment. Observe and record the range of the spring dynamometer (0.5 points) and the minimum scale value (0.5 points). 1

2. Measure buoyancy. Size 1. Adjust the spring dynamometer pointer to the zero mark (0.5 minutes)

2. Use a spring dynamometer to measure the gravity of the object in the air (0.5 points) 1

1. Immerse the block partially into the beaker of water, and record the reading of the spring dynamometer at this time (0.5 points)

2. Find the buoyant force on the block (0.5 points) 1

1. Completely immerse the object in the beaker of water and record the reading of the spring dynamometer at this time (0.5 points)

2. Find the buoyant force on the block (0.5 points) 1

3. Experimental conclusion The above experiment shows that the buoyancy force experienced by an object immersed in a liquid is related to

? (0.5 points) 0.5

4. Organize the equipment. Arrange the experimental equipment and put it back to its original place (0.5 points). 0.5

3. Explore the imaging rules of convex lenses (u>2f or f

1. A set of optical benches (with accessories, the focal length of the convex lens is 10cm)

2. A candle Branch (length less than 9cm)

3. A box of matches

Note: Explore the operation and exploration of the characteristics of u>2f image

f

2. Adjust the center of the convex lens and light screen to be approximately at the same height as the center of the candle flame (1 minute).

2. Explore the characteristics of u>2f time image 1. Move the candle to a position greater than 2 times the focal length of the convex lens, and move the light screen along a straight line until a bright and clear real image of the candle flame appears on the light screen (1 point). 2

2. Record the object distance and imaging characteristics (1 point)

2. Explore the characteristics of the image when f＜u＜2f 1. Move the candle to a position less than 2 times the focal length of the convex lens but greater than 1 times the focal length, and move the light screen along a straight line until a bright, clear real image of the candle flame appears on the light screen (1 point). 2

2. Record object distance and imaging characteristics (1 point).

3. Arrange the equipment. Extinguish the candles and restore the light bench and accessories to their pre-experiment state (1 point).

1

Four. Use a voltmeter to measure the voltage of one of the small bulbs in the series circuit

1. 2 dry batteries (battery box)

1. A DC voltmeter

3. Two small light bulbs (2.5V)

4. Two small lamp holders

5. One single-pole switch

6. Several wires. 1. Connect the circuit. To connect the series circuit correctly, the switch is required to be disconnected. (1 point). 1

2. Use a voltmeter to measure the voltage U1 across L1 1. Observe whether the pointer of the voltmeter points to zero and record each range of the voltmeter and the corresponding graduation value (1 point) 3

2. Connect the voltmeter and one of the small light bulbs in parallel, and make sure the positive and negative terminals of the voltmeter are connected correctly (1 point)

3. Turn on the switch, observe and record the indication of the voltmeter (1 point)

3. Arrange the equipment. Turn on the switch and organize the experimental equipment (1 point). 1

5. Use an ammeter to measure the current of one branch of the parallel circuit

1. 2 dry batteries (battery box)

2. One fixed-value resistor each of 5 ohms and 10 ohms

3. A single-pole switch

4. A DC ammeter

5. Several wires. 1. Connect the circuit. Correctly connect the parallel circuit, requiring the switch to be turned off (1 point) 1

2. Use an ammeter to measure the current value on the R1 branch 1. Observe whether the pointer of the ammeter points to zero and record each range of the ammeter and the corresponding graduation value (1 point) 3

2. Connect the ammeter in series to one of the branches, and connect the positive and negative terminals correctly (1 point)

3. Close the switch, observe and record the reading of the ammeter (1 point)

3. Arrange the equipment disconnect switches and organize the experimental equipment (1 point). 1

Note: 1. If there are imperfections in the operation of each scoring point, points may be deducted appropriately. Scores are scored step by step during the experiment, and the scores are calculated after the experiment is completed

2. Electrical experiment teachers should check whether there are any problems with the experimental equipment in advance, and prepare several sets for backup. The meter must be calibrated first.

3. Prepare experimental recording paper and student recording pens