南京市上元中学初二物理抽测试卷(Nanjing Shangyuan middle school physics pumping test)
南京市上元中学初二物理抽测试卷(Nanjing Shangyuan middle
school physics pumping test)
Nanjing Shangyuan middle school physics pumping test
(please write your answer on the answer sheet)
First, the multiple-choice questions (3 points per game, 45
points)
Question no.
One
Two
Three
Four
Five
Six
Seven
Eight
Nine
Ten
Eleven
Twelve
Thirteen
Fourteen
Fifteen
Answer
1. the following temperature is close to 23 degrees Celsius
A. the normal temperature of the human body, B., the average winter temperature in the North
C. the temperature of the ice water mixture D. gives warmth and comfort to the room temperature
2. the following pictures show the practice of several students in the experiment of measuring the temperature of liquids by thermometer. The correct thing is that..:
3., the following changes in the state of matter, belongs to the solidification is
A. the cold winter, the lake ice B. hot summer popsicles around to take white gas"
C. early winter morning, autumn night cream D. appears on the ground, appear dew grass
The 4. is obtained from the Hyperion image fusion, image information is correct
The boiling point is 48 DEG C B. A. hypo hypo absorbs the heat in the BC segment
C. D.6min is a gas waves have been melted in the CD sea
5. in the following measures, in order to slow down evaporation
A. sweeps the water from the ground to the side. B. puts the wet hand under the hand dryer and dries it
C. hang the wet clothes in the ventilated place and D. the fresh vegetables into the fresh-keeping bag
In the following 6. cases, the phenomenon of vaporization belongs to:
A. spring, the frozen river melts
B. summer, unwrapped it after popsicles will run "white gas"
C. in winter, those who wear glasses enter the warm interior from the outside, and the lenses will be covered with water
D. alcohol feels cool on the skin
7. summer morning, the grass often appear crystal dew, the sun came out, the dew drops quietly disappeared, the whole process of change is the state of matter
A. B. first after sublimation, sublimation after liquefaction, gasification
C. vaporize first, then liquefy, D. solidifies first, then vaporizes
8. physics is the human exploration of nature, a powerful weapon to the knowledge of nature, the natural phenomenon belongs to the sublimation is in
The A. is sometimes filled with fog B. autumn dew on the leaves and flowers in
C. winter morning, the frost on the ground D. a thick layer of ice on the surface of the lake
9. what is wrong in the following statement is that
A. used long lamp filament thinning is sublimation phenomenon, B. autumn morning, fog gradually dispersed, is the phenomenon of liquefaction
C. is scalded by steam and is more serious than boiling water because it releases heat when water vapor is liquefied
When D. people sweat, the breeze feels cool because the sweat evaporates faster and takes away more heat
10. Antarctic expedition team to measure the temperature of the Antarctic, which thermometer should be selected?
A. mercury thermometer, B. alcohol thermometer, C. kerosene thermometer, D. can be
11., the following natural phenomena in the formation process, to absorb heat is
A. spring, snow and ice melt Huicheng streams B. summer Popsicle "smoke" and "white gas"
C. autumn, crystal dew D. on the grass, winter, falling snowflakes in the sky
12. tofu smooth and delicate, after freezing and thawing, there will be a lot of small holes, become delicious "frozen tofu", frozen tofu produced many small holes is the reason
A. tofu is made from cold expanded B. tofu
C. ice in the refrigerator enters the tofu, and the water formed in the D. tofu freezes and becomes ice and then melts into water
13. the following phenomena correspond to the process of change of matter
When the A. bulb is used for a long time, the filament becomes thinner - - the wet clothes that melt B. and dry in the sun - dry - liquefy
C. rub on the skin immediately dry - alcohol vaporization of D. water is slowly freezing - sublimation
14. in the sea to get fresh water, the icon of the "inflatable solar distiller". It is through the sun inflatable in seawater, resulting in a large number of water vapor, water vapor can be collected in the transparent cover is formed on the inner wall of water. The change occurred in this process is the state
A. vaporize first, then liquefy, B. melt first, then solidify
C. D. first sublimation sublimation, after evaporation, after boiling
15. the following judgments about the change of state are correct
A. camphor ball becomes smaller, belongs to the vaporization phenomenon, B. fog dispersion belongs to sublimation phenomenon
C. D. belongs to the ice melting liquefaction phenomenon belongs to the dripping water freezes solidification phenomenon
Two, fill in the blanks (1 points per minute, 19 points)
16. fried fritters, fried potatoes with vegetable oil; boiled corn cob, boiled eggs water. This can be of different cooking methods to provide their required (optional "heat" or
"temperature"),
This is because of the difference between oil and water.
17. crystal in the melting process, to continue to absorb heat, the temperature of ___________ (optional "increase" and "change" or "lower"); incandescent lamp with a long time will turn black, is the first _________ after the results of the filament. (fill in a change of state)
18. last fall, Xiao Ming with the parents to visit a mountain, he wrote in his diary: "Heng Mountain, five others, I have been longing for the place, today I finally put into your arms. In the morning, we boarded the zhurong peak came to Taiwan on the full moon, looking boundless white fog shrouded the mountainside, as if in the clouds above the clouds... Suddenly... Through Xiaguang 10000, the sun came out soon, the fog gradually dissipated, mountains with handsome face." in these words, "fog" is the water vapor in the air and the sun came out, the fog gradually dissipated, "this is the phenomenon.
Gas lighters 19. use in daily life, involving thermal knowledge, such as the combustible gas pressurized into the machine; when the ignition of flammable liquid ejected after the pressure is reduced, quickly into gas. The name of the change in the state of the matter
20. afforestation is the big industry for the benefit of future generations of future generations, the spring planting is always a large number of branches removed, leaving only a few
branches, the main purpose of doing so is to cut trees. Trees to reduce moisture, increase the survival rate of trees.
21. thermometer "readme:" I'm in the boiling water, as shown in the number I, this time the water is boiling water C; if I continue to absorb heat, shows the number of _________ (fill in the "big" and "small" or "change").
The 22. is a and B two substances melting temperature time image, which is _______ crystal material, its melting point is C, in 6min, the crystal in __________ state.
23. thermometers play an important role in the prevention of influenza A (H1N1) epidemic. The thermometer is made according to ________________ properties of mercury. The thermometer shows the number is ______0C, please write a little bit about the thermometer use attention:
_______________________________.
Three, the experimental questions (2 points per minute, 36 points)
24. [name of inquiry] factors affecting the rate of liquid evaporation
[question raised] what are the factors associated with the rate of liquid evaporation?
[conjecture and hypothesis] conjecture by looking at the diagram below and linking the realities of life
Conjecture 1: the rate of liquid evaporation may be related to the liquid level, the size of the liquid and the speed of the liquid surface air flow
Guess two: under the same conditions, the water and alcohol at the same time rubbed on the arm, alcohol easier to dry, I guess the liquid evaporation rate may also be related
[design and experiment] Xiao Ming students carried out the following experiments on one of the conjectures:
As shown in Figure 16, a drop of equal mass of alcohol is placed on two of the same glass plates. By observing the scene, he explores whether the rate of evaporation of alcohol is related to the rate of alcohol evaporation
During this experiment, the alcohol is controlled to flow at the same speed as the air above the surface
[communication and evaluation]
As we know, when a liquid evaporates, it is endothermic. Please cite an example of the application of heat absorption by evaporation
25. on Hyperion and paraffin melting law, experimental data Xiaoqin records are shown in the following table. Please answer the following questions according to the experimental data in the table.
Time? Min
Zero
One
Two
Three
Four
Five
Six
Seven
Eight
Nine
Ten
Eleven
Twelve
The sea temperature C?
Forty
Forty-two
Forty-four
Forty-six
Forty-eight
Forty-eight
Forty-eight
Forty-eight
Forty-eight
Forty-eight
Fifty
Fifty-three
Fifty-six
The temperature of the paraffin wax?
Forty
Forty-one
Forty-two
Forty-four
Forty-six
Forty-seven
Forty-eight
Forty-nine
Fifty-one
Fifty-two
Fifty-four
Fifty-six
Fifty-nine
(1) the waves and paraffin of these two substances, belonging to the crystal is;
(2) the melting point of the crystal is c.;
(3) when the crystal has a temperature of 42 degrees, it is in the state. (optional "solid" or "liquid")
26. in the experiment of "boiling of water", when the water temperature rises to 90 degrees centigrade, the thermometer is
recorded every 1min, until the water boils 5min, and the
readings are recorded as follows:
Time /min
Zero
One
Two
Three
Four
Five
Six
Seven
Eight
Water temperature / temperature
Ninety
Ninety-two
Ninety-four
Ninety-eight
Ninety-eight
Ninety-eight
Ninety-eight
Ninety-eight
(1) there is no record of the data. When the thermometer is shown as shown, please fill out the missing data in the form.
(2) according to the experimental data in the table, the boiling point of water is C; from the boiling point of water, the atmospheric pressure at the time (optional "above" and "equal" or "below") 1 standard pressure.
(3) at the end of inquiry,
The four students exchanged their own curves showing the temperature and time relations of the water they plotted, as shown in the following figure. Among them, it is correct to study the relationship between temperature and time during boiling process
27. in exploring the law of changes in temperature during solid melting, the students in an experimental group plotted the image as shown in the measured data.
(1) it can be seen from the image that the substance is (filled
with crystals)"
Or "non crystal").
The process of melting is characterized by,.
(2) the melting duration of the solid is min, comparing the AB
and CD sections of the figure. If the same temperature is raised,
the segment absorbs more heat.
Nanjing Shangyuan middle school physics pumping test
answer sheet
Score
A choice (every day, 3 points, 45 points)
Question no.
One
Two
Three
Four
Five
Six
Seven
Eight
Nine
Ten
Eleven
Twelve
Thirteen
Fourteen
Fifteen
Answer
Two, fill in the blanks (1 points per minute, 19 points)
16,;
17,;;
18,;
19,;
20,;
21,;
22,,
23,,
Three, the experimental questions (2 points per minute, 36
points)
24,,
,,
25. (1) (2) (3);
26. (1) (2),
(3)
27. (1),,
(2),.
Reference answer
A choice (every day, 3 points, 45 points)
Question no.
One
Two
Three
Four
Five
Six
Seven
Eight
Nine
Ten
Eleven
Twelve
Thirteen
Fourteen
Fifteen
Answer
D
D
A
B
D
D
B
C
B
B
A
D
C
A
D
Two, fill in the blanks (1 points per minute, 19 points)
16. temperature, boiling point;
17., constant sublimation sublimation;
18. liquefy, vaporize (or vaporize);
19. liquefaction and vaporization;
20. surface area and evaporation;
21.99, unchanged;
22., 80, solid-liquid coexistence
23. heat expansion, cold contraction 36.5, before use, throw a few
Three, the experimental questions (2 points per minute, 36 points)
24. thermometer area, kind of material
Surface area, temperature, summer, sprinkling water on the ground to cool (other reasonable to give points)
25. (1) waves (2) 48 (3);
26. (1), 96 (2), 98 below
(3) B
27. (1) the heat absorption temperature of the crystal remains
constant
(2) 4 CD
One
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