"High School Entrance Examination Real Questions Link" Power PPT

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"High School Entrance Examination Real Questions Link" Power PPT

►Type 1 force

1．2018·Enshi Prefecture Among the following statements about force, which one is correct ( )

A. The two objects that produce the force must be acting on each other

B. An object can also produce force

C. Force can exist apart from objects

D． Two objects in contact with each other must produce a force

2.2018·Mianyang The carrier-based aircraft "J-15" of the "Liaoning" aircraft carrier stopped under the action of the arresting cable when it landed on the ship. During this process ( )

A. The force exerted by the arresting cable on the carrier-based aircraft causes the arresting cable to deform.

B. The force exerted by the arresting cable on the carrier-based aircraft causes the movement state of the carrier-based aircraft to change.

C. The force the carrier-based aircraft exerts on the arresting cable is the same as the force-bearing object on which the arresting cable exerts force on the carrier-based aircraft.

D． The force exerted by the carrier-based aircraft on the arresting cable is the same as the force exerted by the arresting cable on the carrier-based aircraft.

3. 2018·Huaihua In the process of drawing a bow and shooting an arrow, the bow is bent, which shows that force can change the ______ of the object; when the arrow is released, the arrow flies out, which shows that force can change the ______ of the object.

4．2018·Yangzhou Use the forces FA, FB, and FC shown in Figure 7-T-4 to close the door respectively. The force ____ cannot close the door.

►Type 2 Elastic force and spring dynamometer

5．2018·Jilin The dynamometer is a tool for measuring the size of _____ (optional "mass" or "force"); in Figure 7-T-5, the reading of the spring dynamometer is ____N.

6．2017·Taizhou As shown in Figure 7-T-6, press the tip of the pencil with your fingers on a horizontal table and draw a schematic diagram of the elastic force of the pencil tip on your fingers.

7．2018·Shanxi Students Xiao Ming and Xiao Liang made a simple dynamometer using rubber bands, cardboard, hooks with pointers, spring dynamometers and other equipment. Marking scale plan 1: Let the rubber band hang freely in the vertical direction. When the pointer is stable, mark the "0" scale at the position pointed by the pointer. Then use a spring dynamometer to pull the hook. When the pulling forces are displayed as 1 N, 2 N, 3 N, and 4 N respectively, mark the corresponding scales at the positions pointed by the pointers. The relevant experimental data are recorded in the following table:

►Type 3 Gravity

8．2018·Yulin Which of the following objects has a gravity of about 1 N ( )

A. a pin

B. two eggs

C. a cow

D． a basketball

9．2018·Xiangxi Prefecture Regarding the gravity diagram of the ball, which of the following drawing methods is correct ( )

10．2018·Hainan As shown in Figure 7-T-9, draw a schematic diagram of the gravity on the apple.

11．2018·Chengdu In the experiment of “exploring the relationship between gravity and mass”:

(1) Before measuring the gravity of an object, in addition to observing the range and graduation value of the spring dynamometer, the spring dynamometer should also be zeroed in the _____ direction.

(2) When measuring the gravity of an object, the object should be hung under the spring dynamometer and let it be in the _____ state. At this time, the indication of the spring dynamometer (that is, the pulling force) is equal to the gravity of the object.

(3) Students in the experimental group measured multiple sets of data on the gravity of hook codes of different masses. During one measurement, the pointer position of the spring dynamometer was as shown in Figure 7-T-10, and the reading was _____N.

(4) Xiaohong, a student in the experimental group, suggested: “You can also measure the mass and gravity of other objects besides the hook code, and comprehensively analyze these data with the relevant data of the hook code to find patterns.” However, Xiaoyu, a student in the same group, did not Agreeing, he believes that "all the gravity and mass data of hook codes must be used to find patterns." Do you think classmate ______’s point of view is correct?

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Update Time: 2024-11-11

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 2 industry PPT template

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