AQA Physics P3 Definitions Match the word with the definition, or answer with the question. 2.5 / 5 based on 9 ratings ? PhysicsWaves and SoundGCSEAQA Created by: heloiseCreated on: 21-05-11 09:47 Center of Mass The point at which the whole weight of the object acts 1 of 20 A: moment= force times distance (what is the question?) What is a common incorrect formula to calculate moments? 2 of 20 A: it would fall over (what is the question?) If f1*d1 > or < f2*d2, what would happen? 3 of 20 A: decrease the base size (what is the question?) what would make an object less stable? 4 of 20 A: Centripetal force (what is the question?) Gravity, tension force and friction force can all be a.... 5 of 20 Ellipse. A slightly squashed circle. 6 of 20 A: geostationary orbit (what is the question?) An object turning around the Earth in 24hrs, high above the equator, is in a what orbit? 7 of 20 A: angle of reflection (what is the question?) Angle of incident = 8 of 20 A: they slow down. (what is the question?) What happens when light rays go from air to glass? 9 of 20 A: half the radius of the circle a convex or concave mirror would have form had it been a complete circle. (what is the question?) What is the focal length? 10 of 20 A: when sight lines, OR light rays converge (what is the question?) When is an image of any kind formed? 11 of 20 Ultrasound. A sound with a frequency above normal human hearing range. 12 of 20 A: loudness (what is the question?) What is a less technical word for amplitude? 13 of 20 Prenatal scanning. When ultrasonic waves are used to create an image of an unborn baby. 14 of 20 A: increase the size of the current. (what is the question?) How could you increase the force acting in the motor effect? 15 of 20 A: induced. (what is the question?) If a wire that is part of a complete circuit cuts through a magnetic field, a current will be... 16 of 20 A: Np/Ns (what is the question?) Vp/Vs =? 17 of 20 A: more secondary coils (what is the question?) The transformer between the power station and power lines will have? 18 of 20 A: Gravity (what is the question?) For a star to be stable, radiation pressure needs to equal what? 19 of 20 A neutron star. An extremely dense star, formed from a supernova imploding. 20 of 20
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