2 Hina is studying the conservation of energy. She knows that energy can neither be created nor destroyed, but it can be converted from one form to another. When a pendulum swings, what happens to its energy at the highest point? A It has maximum kinetic energy B It has maximum potential energy C It has equal kinetic and potential energy D It has no energy
3 Nora is studying geothermal resources. She knows that geothermal energy comes from the Earth's internal heat. Which of the following is a source of geothermal energy? A Hot springs B Sunlight C Wind D Tides
5 Usman is studying the expansion of liquids. He understands that the expansion of a liquid is used in thermometers. What happens if a liquid has a very low coefficient of expansion? A It is more sensitive B It is less sensitive C It has a wider range D It is more linear
6 Tina is studying energy forms. She knows that energy can exist in different forms. Which of the following is a form of energy? A Kinetic energy B Mass C Temperature D Density
7 Patricia is studying the kinetic energy formula. She knows that kinetic energy is given by KE = ½ mv². If the mass of an object is doubled, what happens to its kinetic energy if the speed remains constant? A It doubles B It quadruples C It halves D It remains the same
8 Perpetual motion machines are impossible because they violate: A Law of motion B Law of inertia C Law of conservation of energy D Law of gravitation
9 Rachel is studying work. She knows that work is done when a force moves an object in the direction of the force. If the force and displacement are perpendicular to each other, what is the work done? A Zero B Maximum C Minimum D Equal to the force
10 Tina is learning about the effects of the diameter of the tube on the sensitivity of a thermometer. She understands that a narrow tube increases sensitivity. Why is a narrow tube more sensitive? A Because liquid rises faster B Because a small change in volume produces a large change in length C Because it cools faster D Because it heats faster
11 Yara is learning about fixed points in thermometer calibration. She understands that the upper fixed point is the boiling point of water. At what temperature does water boil at standard atmospheric pressure? A 0°C B 100°C C 50°C D 200°C
13 Range of thermometer means: A Accuracy B Maximum and minimum measurable temperature C Speed of response D Sensitivity
14 Qasim is studying the states of matter. He learns that plasma is the most common state of matter in the universe. Where is plasma commonly found? A On Earth B In stars C In oceans D In the atmosphere
15 Khalid is studying the linearity of thermometers. He understands that linearity is important for accurate readings. Which of the following affects the linearity of a liquid-in-glass thermometer? A Type of glass B Diameter of tube C Size of bulb D All of the above
16 Waseem is studying power. He knows that power is measured in watts. What is the formula for power? A Power = Work / Time B Power = Work × Time C Power = Force × Distance D Power = Mass × Acceleration
21 Xia is studying the law of conservation of energy. She knows that energy can be converted from one form to another. In a hydroelectric dam, what energy conversion takes place? A Potential energy to electrical energy B Kinetic energy to chemical energy C Thermal energy to potential energy D Nuclear energy to mechanical energy
22 Mohamed is studying the effects of the diameter of the tube on the range of a thermometer. He understands that a narrower tube does not affect the range. What determines the range of a thermometer? A Diameter of tube B Length of tube C Nature of liquid D Both B and C
24 Omar is studying density. He understands that density is used to determine the purity of a substance. If a sample of gold has a density different from the standard value, what does it indicate? A It is pure gold B It is impure or an alloy C It is a different metal D It is a gas
26 Bilal is studying the work done by a force. He applies a force of 100 N to move an object by 2 meters in the direction of the force. What is the work done? A 200 J B 100 J C 50 J D 0 J
27 Lara is studying power. She knows that power is the rate of doing work. A motor does 500 J of work in 10 seconds. What is the power of the motor? A 50 W B 500 W C 5 W D 5000 W
28 Sam is studying the SI unit of work and energy. She knows that work and energy are measured in the same unit. What is the SI unit of work and energy? A Joule B Newton C Watt D Pascal
29 Hina is studying geothermal energy. She knows that geothermal energy is derived from the Earth's internal heat. Which of the following is a source of geothermal energy? A Sunlight B Wind C Volcanoes D Tides
30 Tina is studying power. She knows that power is the rate of doing work. If a machine does 1000 J of work in 2 seconds, what is its power? A 500 W B 1000 W C 2000 W D 200 W