Republic of the Philippines Nueva Ecija University of Science and Technology Fort Magsaysay Campus, Palayan City 2nd Quarter Test in Grade 10 Science Name:__________________________ Score:____________ Yr/Section:______________________ Date:_____________ TEST I – Identify what is asked in the following statements. Write your answers on the space provided before each number. (2 points each) __________________1. A device that converts mechanical energy into electrical energy. __________________2. A region around a magnet in which a magnetic force can be detected. __________________3. A device that increases or decreases the voltage of an alternating current. __________________4. The process of inducing a current by moving a magnetic field through a wire coil. __________________5. The entire range of wavelengths or frequencies of electromagnetic waves extending from gamma rays to the longest radio waves and including visible light. __________________6. The force acting on a unit area. __________________7. A device that measures small amount of electric current. __________________8. A component force, perpendicular to the surface of contact, (e.g. the contact force exerted on an object by the surface of a floor or wall, preventing the object to fall.) __________________9. A type of equilibrium when the body is in motion at a constant velocity. __________________10. It is the point from where all the weight of an object may be considered to be concentrated. __________________11. A force equal to the weight of the fluid displaced by the body. __________________12. Are substances whose shape can easily change and that are able to flow. __________________13. The ability of a solid material to regain its original shape and size after an external force acts on it. __________________14. A measure of the change in volume which results from a change in pressure. __________________15. The ratio of the mass of a substance to its unit volume. TEST II – Solve the following problems neatly and completely. 1. You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density? 2. A swimming pool is filled with water to a depth of 3 m. Calculate the pressure on the bottom of the pool due to the water. (Density of water is 1000 kg/m 3.) 3. A block of wood of mass 3.5 kg floats in water. Calculate the buoyant force on the block. 4. The large piston in a hydraulic lift has a radius of 250cm 2. What force must be applied to the small piston with a radius of 25cm 2 in order to raise a car of mass 1500 kg? 5. A 10-m uniform beam with a mass of 1.8 kg, is at rest with its ends on two scales. A uniform block, with mass of 2.7 kg, is at rest on the beam, with its center of mass at a distance 2.5 m from the beams left end. How much upward force must be exerted by the scale on the right end to keep the beam and the block on it in a horizontal position? TEST III – Enumerate what is being asked in the following. (15 pts.) a. (1-7) types of electromagnetic waves b. (8-10) states of equilibrium c. (11-15) components of a simple DC motor
“There is no beginning or end to your dreams or plans. Life is a journey from moment to moment. Live each moment to the fullest”. – Garth Catterall-Heart Prepared by: GAQ
