"Test in this Chapter" Sports and Strength PPT

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"Test in this Chapter" Sports and Strength PPT

1. (Heilongjiang High School Entrance Examination) Landslide is a natural disaster that is very likely to occur during heavy rainfall. During heavy rainfall, due to the infiltration of rainwater, the friction between different geological layers (plates) of some mountains that are not stable enough becomes smaller, and some Landslides occur when mountains slide downward under the force of gravity.

2. (Hainan High School Entrance Examination) Hainan Province is carrying out a social civilization campaign, requiring cars to give way to pedestrians. It is very dangerous for a car to cross a zebra crossing without giving way to pedestrians. This is because the car has "inertia" and it is difficult to stop when braking in an emergency. Car tires are engraved with deep grooves on their surfaces in order to increase (optional "increase" or "decrease") friction.

3. (Tianjin High School Entrance Examination) As shown in the figure, the lamp is suspended from the ceiling with a wire. When the lamp is stationary, the balance force of the pulling force on the lamp is (B)

A. Gravity on the line B. Gravity on the lamp

C. The pulling force of the lamp on the wire D. The pulling force of the wire on the ceiling

4. (Beijing High School Entrance Examination) In the following examples, the purpose of reducing friction is (D)

A. Football goalkeepers wear non-slip gloves

B. Press the brakes hard when riding a bicycle

C. The bottom of the sports shoes has uneven patterns.

D. Lubricate the bicycle axle

5. (Jiangxi High School Entrance Examination) As shown in the picture, Grandpa Wang is pushing a car that has lost power at a constant speed on a straight road. The correct one of the following statements is (B)

A. The pressure of the car on the ground and the support force of the ground on the car are a pair of balancing forces.

B. The thrust of the car and the friction force of the ground against the car are a pair of balancing forces

C. The gravity of the car and the pressure of the car on the ground are a pair of interacting forces.

D. The pushing force of the car on Grandpa Wang and the friction force of the ground on Grandpa Wang are a pair of interacting forces.

6. (Nanjing High School Entrance Examination) Among the following phenomena, which one can be explained by inertial knowledge (B)

A. Trucks are equipped with many wheels

B. Pat the newly dried quilt to make the dust fall off

C. After the stone in the hand is released, it falls faster and faster

D. When a car is driving on an icy road, chains are wrapped around the wheels

7. (Huaian High School Entrance Examination) Regarding the relationship between force and motion, which of the following statements is correct (B)

A. The thrown basketball is not affected by gravity during its ascent.

B. A train running at a constant speed on a straight track is acted upon by a balancing force

C. When a car brakes, people will "rush" forward because the inertia suddenly disappears.

D. Athletes perform exercises at a constant speed on a circular track, and the state of movement does not change.

Keywords: Free download of PPT courseware for the second volume of eighth-grade physics published by the People's Education Press, download of test PPT in this chapter, download of motion and force PPT, .PPT format;

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Update Time: 2024-10-03

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

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