2 Ibrahim is learning about liquid pressure. He understands that liquid pressure increases with depth. In a swimming pool, where is the pressure greatest? A At the surface B At the middle C At the bottom D Same everywhere
4 Why are airbags used in cars? A To increase speed B To decrease force by increasing time C To reduce mass D To stop motion instantly
5 George is learning about atmospheric pressure and weather. He understands that changes in atmospheric pressure can indicate weather changes. Which of the following is associated with high pressure? A Stormy weather B Rainy weather C Clear and sunny weather D Snowy weather
6 Laura is studying the manometer. She learns that a manometer can be used to measure the pressure of a gas in a container. What is the pressure if the manometer reading is equal on both sides? A Zero pressure B Atmospheric pressure C Gauge pressure D Absolute pressure
7 Ahmed is trying to open a heavy door by pushing near the hinges. He finds it very difficult. He then pushes at the far end of the door and finds it easier. What concept explains why pushing at the far end is more effective? A Center of mass B Moment of a force C Friction D Equilibrium
8 Xia is studying friction. She knows that friction is a force that opposes relative motion. What is the direction of the frictional force on a box being pushed to the right? A To the right B To the left C Upwards D Downwards
9 Ahmed is learning about elasticity in his physics class. His teacher explains that elasticity is the property of a material to regain its original shape after deformation. Which of the following materials is considered highly elastic? A Clay B Rubber band C Plasticine D Dough
10 Nora is studying rolling friction. She knows that rolling friction is smaller than sliding friction. Why is rolling friction less than sliding friction? A Because rolling objects have less contact area B Because rolling objects are lighter C Because rolling objects are smoother D Because rolling objects move faster
11 Vera is studying applications of atmospheric pressure. She learns that atmospheric pressure is used to lift objects with suction cups. How does a suction cup work? A By creating a vacuum that holds it in place B By using magnetic force C By using adhesive D By using static electricity
12 Patricia is studying frictional dissipation. She knows that friction converts mechanical energy into heat. What is the term for this energy conversion? A Frictional dissipation B Energy conservation C Energy transfer D Energy transformation
13 Khalid is studying the average orbital speed of satellites. He knows that satellites in lower orbits have higher speeds. Which planet has a higher orbital speed: Mercury or Neptune? A Mercury B Neptune C Both have the same speed D Cannot be determined
18 Principle of conservation of momentum states that: A Momentum always increases B Momentum is lost in collisions C Total momentum remains constant D Momentum depends on force
19 The limit of proportionality is the point where: A Graph becomes horizontal B Extension stops C Force is zero D Graph stops being straight
20 Waleed is learning about applications of atmospheric pressure. He understands that atmospheric pressure is used in pneumatic systems. Which of the following is a pneumatic system? A Hydraulic lift B Brake system in cars C Tire inflation D Electric motor
21 Nora is studying the disadvantages of friction. She knows that friction causes energy loss in machines. What is a method to reduce friction? A Using lubricants B Increasing the roughness of surfaces C Increasing the weight of the object D Removing all lubrication
23 Ming is studying the effect of friction on a moving object. He knows that friction always opposes motion. What is an advantage of friction? A It causes wear and tear B It allows us to grip and walk C It produces heat D It reduces efficiency
24 What is deformation? A Change in mass B Change in volume only C Change in shape or size D Change in temperature
25 What is the spring constant? A Force per unit mass B Extension per unit force C Force per unit extension D Area per unit force
28 David is balancing a seesaw with two friends of different weights. He moves the heavier friend closer to the pivot to balance it. What principle is he applying? A Principle of moments B Newton's second law C Law of conservation of energy D Principle of conservation of momentum
29 Chloe is studying centripetal force. She knows that a car moving around a circular track requires a centripetal force. What provides the centripetal force for a car on a flat road? A Gravity B Friction between the tires and the road C Air resistance D Normal force