casino lugano dresscode:casino,lugano,dresscode,锘,娈佃,惤:Zhoutie School, Yixing City, Jiangsu Province, 2017-2018 school year, eighth grade, semester, mid-term exam, physical exam questions, download, Zhoutie School, Yixing City, Jiangsu Province, 2017-2018 school year
Zhoutie School, Yixing City, Jiangsu Province, 2017-2018 school year, eighth grade, semester, mid-term exam, physical exam questions, download, Zhoutie School, Yixing City, Jiangsu Province, 2017-2018 school year, eighth grade, last semester, mid-term exam, physical exam, 2017-2018, school year, iron School District League First Semester Midterm Exam Physics Test Papers () Grade 2 Subjects: Physics Review School: Zhou Tie Middle School Second Grade Preparation Group Examination Method: Closed Book Examination Time: 100 minutes Outstanding: 100 points One, multiple choice questions (14 questions in total) 2 points for each question, a total of 28 points) 1. In the following data, the actual situation is A. The normal body temperature of the person is CB. The temperature of the bath water is about 60 CC. The heartbeat frequency of the person is about The ambient sound level that makes people feel comfortable is 60dB-70dB2. The following four pictures are all in our physical books, and the corresponding knowledge corresponding to them is incorrect 3. As shown in the figure, the relationship between loudness and amplitude is explored. In the experiment, Xiao Ming tied the string with ping-pong on one end to the crossbar. When the drumstick hits the drumhead, the greater the strength of the table tennis, the higher the table tennis beat. The purpose of using table tennis in this experiment is A. Studying the vocalization of table tennis is due to the beating of table tennis. Study the relationship between the loudness of table tennis vocalization and its jumping height. Study the relationship between the jumping height of table tennis and the strength of the tapping drum surface D. Display the amplitude of the drum surface vibration. 4. In the following process, it belongs to . The following phenomena are consistent with the principle of plane mirror imaging. A. Hand shadow B. Reflection in the water C. D. 6. In recent years, in order to control noise pollution and improve the living environment of residents, some cities have adopted measures such as prohibiting car whistle in the city, planting trees on both sides of the road, and installing sound insulation boards on both sides of the viaduct. In the sign shown below, the sign 'No whistle' is . Li Li, a student of the school's labor interest group, sprayed water on the bonsai in the classroom and found that the water in the spray bottle was sprayed on the leaves and quickly evaporated. For such a rapid vaporization phenomenon, he guessed that the correct one was A. The water in the watering can is sprayed on the leaves to increase the surface area. The sprayed water mist is water vapor C. The water in the watering can is sprayed on the leaves and the temperature becomes higher. The water in the watering can is sprayed on the leaves and the air flow is accelerated A. The light emitted by the flower is red B. Flowers can reflect red light in the sun. The light emitted by the flower is white D. Flowers can absorb red light from the sun. There are many artistic and scientific drinking utensils in ancient China. There is a kind of cup called 'Chang full cup', and the cup is made of a cone made of fine white jade. The cup is placed in the air in some places, and water droplets will appear on the white jade cone. After a while, the cup will be filled with water, so it is said to be full.
There are several statements about this cup, the wrong one is A. The water in the cup is the water vapor formed on the white jade. The water in the B. cup is the air formed by liquefaction of the air on the white jade. Before the water droplets are generated, the temperature of the white jade is lower than the temperature of the surrounding air. D. The cup may automatically aw?water in the mountains where the water source is lacking. 10. In the figure, the temperature change during the casting process of the railway rails can be correctly described as 11 . As shown in the figure, it is a top view of the rhythmic gymnastics training room. The north wall of the training room has a large plane mirror. When the teacher enters the position from the outside, the four students of A, B, C and D can observe the teacher through the plane mirror. ( 鈻?) A. Class A B. Class B, C. C classmate D. Ding student material mercury gold copper pure iron tungsten melting point / C-391064108315253410 boiling point / C3572500236027505900 as judged by the table, the following statement is correct A. gold into the molten iron will not melt B. The filament in the bulb is commonly used tungsten Made, because the boiling point of tungsten is high C. In the -40 C environment, the mercury thermometer can not be used D. The boiling point of several metals in the table can be measured with a mercury thermometer. The picture shows a partial light path of the headlights when driving on dry asphalt roads and wet asphalt roads at night, when driving at night A. Dry road surface is more prone to diffuse emission of light. Dispersion of light on a dry road surface C. When there is no car on the opposite side, the driver sees the damp road brighter. The light that strikes the dry road does not follow the law of light reflection AB. It is circular, it is the image of the sun through a plane mirror. It is quadrilateral, not the image of the sun. It is a quadrilateral, it is part of the image of the sun. Fill in the blanks (10 questions in total, 1 point for each, a total of 30 points). 15. When exploring whether solids can be heard, Xiao Ming and the same table use clothes racks in class. conduct experiment. In the experiment, Xiao Ming wrapped the two ends of the string around the index fingers of the two hands, and gently tapped the clothes rack twice with the pencil on the same table. The sound of the hanger was generated by the hanger
Xiao Ming first way to listen to the sound is as shown in the figure. The sound he heard was transmitted through the air. The second time he listened to the sound, he blocked his finger, this time Xiao Ming heard the sound. It was passed by , which sounded like a big clock in the temple.
This phenomenon shows that _, and the effect is better; thus, he understands that the sound of his own speech is recorded by a mobile phone with better sound effect, and then the sound that is directly heard is The same / not the same reason for this phenomenon. 16. During the summer vacation, Kobayashi went to the mountains to climb the mountain. He shouted at the distant cliffs. He heard the echoes about 2s. They were about m from the cliff. If suddenly the thunderstorm started, Xiaolin saw the lightning after about 5s. When you hear the thunder, the place where Xiaolin is from lightning is about _____m (the speed of sound is calculated by 340m/s). 17. When an earthquake or typhoon occurs, it is often accompanied by the generation of _ (ultrasonic/infrasound waves).
A sound with a frequency higher than ___Hz is called an ultrasonic wave.
18. Commonly used thermometers are made according to the nature of . As shown in the figure, it is a thermometer. When it is used, it ____ (can/can't) leave the body reading. The figure shows the number of hours when a student measures body temperature during a physical examination at the hospital. The thermometer shows that the body temperature of the student is _____C. 19. During the hot summer vacation, Xiaohua wrote homework at home, sweating, and looked up at the thermometer on the wall. At room temperature, it was 36 C, so she turned on the electric fan and immediately felt much cooler. Also looked at the thermometer and found the number __ (optional 'raise', 'unchanged' or 'lower'). Then the reason why she feels cool is ________. On October 17, the 'Shenzhou 11' spacecraft was successfully launched. The following figures are some of the scenes at the time. Please answer the questions according to the diagram: (1) The fuel and oxidant in the rocket are 鈻?(filled in 'solid', 'liquid' or 'gas').
It liquefies the gas by both cooling and
We saw that a lot of 'white gas' around the rocket just ignited was formed by the water first 鈻?and then (2) The helmet glass of the spacesuit developed by China itself must be able to weaken (optional 'infrared' or 'ultraviolet') damage to the eyes and skin. Yiyuan Scenic Area was rated as the national 4A level scenic spot. As shown in the right picture, the water depth under the bridge is 2m. When the lantern on the bridge is 3m away from the water surface, the eflection?of the lantern is from the water surface; if the lake water rises again, then The lantern is away from its corresponding 'reflection'. twenty three. As shown in the image to the right, a beam of sunlight is refracted by a three-spot mirror and split into seven colors of light, forming a colorful band on the white screen. This phenomenon is called ___; the prism is in the sunlight. The purple light's ability to deflect 鈻?(filled or if).
If you place a piece of red glass in front of the white screen, we can see ___ shades on the white screen. 24. In order to reflect the sunlight into a horizontal culvert facing the east facing direction, Xiao Ming designed a plane mirror M that can automatically adjust the direction. As shown in the figure, at noon, the sunlight is perpendicular to the horizontal ground. The angle indicating the direction of the plane mirror should be 伪=in the afternoon, as the sun is slanting, 伪 should be appropriate 鈻?(optional 渋ncrease?or 渄ecrease? 3. Answers (7 questions in total, 42 points total) 25. (6 points) Draw the picture according to the following requirements: (1) Please make the image AB formed on the screen by the object AB in the picture. (2) Draw the reflected light of the incident light AO in the figure and mark the magnitude of the reflection angle. (3) Make an image of the object in the figure through a plane mirror. 26. (4 points) Xiao Ming explored an experiment in the spread of light. He poured water into his empty water tank at home and poured a lot of salt into it. After a few days, he let a laser beam In the salt water, the light path is as shown on the right. The light in the picture propagates along (filling a straight line or a curve). The reason may be , which means that the light travels along a straight line is conditional. The medium should have The characteristics of .
In the experiment, Xiao Ming can in order to clearly show the light path in the water. 27. (5 points) Xiao Ming before observing the change of state in the 'iodine hammer', the data were obtained: the temperature of the outer flame of the alcohol lamp is about 800 C. The melting point of iodine is C. After heating in two ways in the figure, after a while, it was found that there was a large purple gas in the experiment shown in Figure A. This is because the iodine particles in the nail are due to heat (filling in 'sucking' or 'putting' And ; in the experiment shown in Figure B, a small amount of liquid iodine appeared, which was caused by solid iodine _____. After the heating is stopped, the iodine vapor in the 'iodine hammer' will occur , which becomes a small black particle attached to the glass wall. This process requires heat (fill in 'suck' or 'put'). 28. (5 points) Entering the weather station, you can see the louver as shown in the figure. There are two thermometers in the box (the thermometer that measures and records the highest temperature of the day and the thermometer with the lowest temperature).
[Source (1) The surface of the louver is painted white, for (optional 'reflection' or 'absorption') sunlight, avoiding sunlight, ___ in the sunlight (optional) The effect of infrared or 'ultraviolet light' on the temperature inside the box.
(2) The scale of the thermometer in the louver box is uniform, which means that the temperature change substance has the same amount of change in the temperature measurement substance when the temperature change is the same in the temperature range. (3) The thermometer for measuring the minimum temperature should use the liquid with a freezing point higher than as the temperature measuring substance. The thermometer for measuring the highest temperature should be similar to the structure of (optional 'thermometer' or 'laboratory thermometer'). 29. (8 points) Xiao Ming uses the experimental device shown in Figure A to observe the boiling of water (1) When assembling the equipment, the ___ in the figure should be fixed (optional 'A' or 'B'): (2 After installing the experimental equipment, Xiao Ming poured water into the beaker as shown in Figure B. The water he poured into this temperature was: ___.
(3) After the water temperature rises to 90 C, Xiao Ming observes the thermometer number every 1 min, recorded in the table below, until the water boils, so stop reading after 3 min; time / min012345678 temperature / C 90929496989999991 In the 7th minute Xiaoming forgot to record the data, the water temperature should be ___C; 2 Xiaoming observed: the bubble in the water when boiling is the picture ___ map (optional 'C' or ' D'); Why does the bubble change like this? A: The main reason for this change is: ___. 3 Through this experiment Xiaoming knows that water boiling must have certain conditions: a___; b___.
4 The temperature is no longer rising, must it be boiling? When a student used the winter vacation time to explore the boiling experiment of water at a standard atmospheric pressure, he found a strange phenomenon: when the water temperature rises to 80 degrees, the temperature does not rise any more, and at this time there is no air bubble in the water. What could be the reason? A: ___.
30. (10 points) In the 'Exploration of the characteristics of plane mirror imaging' experiment, Xiao Ming experimented with glass plates, the same two pieces A and B, scales, plasticine, white paper and other equipment, as shown. (1) When the experiment, the glass plate should be placed on the horizontal table by _________; (2) The experiment selects two A and B of the same piece to compare the _ relationship. (3) The experiment uses a transparent thin glass plate instead of the plane mirror used daily, and can observe the image of the A piece while observing the image of the A piece, thereby determining __________, and the resolution of the image is more than normal. The mirror used ____ (fill in 'good' or 'poor'). (4) During the experiment, Xiao Ming let the glass plate be close to the chess piece B in the direction perpendicular to the CD axis. In order to complete the experiment, Xiao Ming should put the chess piece B_______ (optional 'away' or 'close') A piece while observing The image to the piece will be _______ (optional 'bigger', 'unchanged' or 'smaller'); if he moves the glass plate horizontally to the right along the CD axis, he will observe the mirror A Like ______ (optional 'to the right', 'left' or 'no'). (5) When looking for the position of the image of the piece A, the eye should observe on the side of the piece _____ (optional 'A' or 'B'), move the piece B behind the glass plate, and make it with the piece A. The image formed in the glass plate coincides to determine the position of the chess piece A. The research method used here is _. (Optional 'Control Variable Method' or 'Equivalent Alternative Method') (6) 'One of the important applications of the periscope mirror, Xiao Ming thinks that the image made by the periscope is opposite to the object, try to choose a reasonable and simple test for him. Scheme _____ (optional number) 1 draw the light path map to analyze 2 observe a classmate with a periscope, let him wave his right hand, judge which hand is waving in the image. (4 points) as shown in Figure A is to explore The experimental device of the light reflection law. Xiao Ming put the plane mirror M flat on the horizontal table, and the white cardboard stood vertically on the flat mirror surface. (1) Xiaoyu let a beam of light stick to the mirror along the AO direction to the mirror. The reflected light is emitted in the OB direction, and the reflection angle and the incident angle are measured. The incident angle of the light is changed, and the above experimental steps are repeated a plurality of times. The law obtained by the above experiment is ______ (optional letter). A. light B. Along the straight line B. The angle of reflection is equal to the angle of incidence C. Characteristics of plane mirror imaging 2 The role of white cardboard in the experiment is __ (write one out). (2) If the cardboard is tilted during the experiment, such as Figure B shows the light still attached to the cardboard Shooting toward the mirror in the AO direction, he can't see the reflected light on the cardboard B. At this time, the reflected light ______ (fill in 'exist' or 'not exist'); if it exists, please use another way It is displayed; if it does not exist, please explain the reason. ______________. A total of 2 questions for each question, a total of (10 points). (4 points) a total of 2 points for each question, a total of (10 points) (4 points) A. The sound can be heard with the teeth B. The pitch of the sound depends on the frequency of the vibration of the object C. This is a device that effectively attenuates the noise D. The sound can be.
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