The cards Question What is mass? Tap to flip Answer The amount of matter (material) in an object. Question In what unit is the mass of an object measured? Tap to flip Answer Kilograms (kg). Question What is the unit of force? Tap to flip Answer The newton (N). Question What is gravitational field strength? Tap to flip Answer The force per kilogram caused by a gravitational field. Question What is the unit of gravitational field strength? Tap to flip Answer Newtons per kilogram (N/kg). Question On Earth, about how much force is needed to lift a 1 kg mass? Tap to flip Answer About 10 N. Question How many grams are there in 1 kg? Tap to flip Answer 1000 g. Question What equation links gravitational force (W), mass (m) and gravitational field strength (g)? Tap to flip Answer W = m × g Question What is the extension of a spring? Tap to flip Answer Its change in length. Question Is the extension of a spring the same as its length? Tap to flip Answer No. The extension is the change in the spring's length caused by the force, not its length. Question How is the extension of a spring related to the force applied to it? Tap to flip Answer The extension is directly proportional to the force. Question When are two variables directly proportional? Tap to flip Answer When one is a constant multiple of the other. Question Why is a spring described as elastic? Tap to flip Answer It returns to its original length when the force is removed. Question Which law describes the behaviour of a spring when it is stretched? Tap to flip Answer Hooke's law. Question On a graph, what does a line of best fit show? Tap to flip Answer The pattern (relationship) in a set of data points; it passes between them. Question For each equal increase in force, how does the extension of a rubber band change? Tap to flip Answer It increases by different amounts each time, not by the same amount. Question What in rubber uncoils when it is stretched? Tap to flip Answer Its long molecular chains. Question What is the force called that acts on an object resting on a surface, pushing it up from that surface? Tap to flip Answer The normal reaction force. Question What happens to a beam when a bigger mass is placed on it? Tap to flip Answer It bends more. Question The more a beam bends, what happens to the force it pushes back with? Tap to flip Answer The force it pushes back with gets greater. Question Why can a floor push back with a bigger force when a bigger mass is on it? Tap to flip Answer More of the floor's particles are squashed together, and the more they are squashed, the greater the force they push back with. Question What is the force between two electrically charged particles called? Tap to flip Answer An electrostatic force. Question What is a lever? Tap to flip Answer A simple machine designed to use the turning effect of a force. Question What is the force applied to a lever called? Tap to flip Answer The effort. Question What is the force produced by a lever called? Tap to flip Answer The load. Question What point does a lever rotate around? Tap to flip Answer The pivot. Question When is a lever a force multiplier? Tap to flip Answer When the load force it produces is larger than the effort force. Question Besides force, what else can a lever multiply? Tap to flip Answer Movement: it can turn a small movement into a larger movement. Question How do the different types of lever differ from each other? Tap to flip Answer Each has its pivot in a different position. Question What is the turning effect of a force called? Tap to flip Answer A moment. Question What equation gives the moment of a force? Tap to flip Answer Moment = force × (perpendicular) distance from the pivot Question Give one unit for a moment. Tap to flip Answer E.g. the newton-metre (N m) or the newton-centimetre (N cm). Question When is a beam balanced? Tap to flip Answer When it is not starting to rotate about its pivot. Question What is upthrust? Tap to flip Answer A force acting upwards due to pressure. Question What is a displacement can used to find? Tap to flip Answer The volume of water displaced by an object when it floats or sinks. Question What does an object do in water if its density is less than the density of water? Tap to flip Answer It floats. Question Does how well an object floats in a liquid depend on the depth of the liquid? Tap to flip Answer No. Question When does an object float in water, in terms of its shape? Tap to flip Answer When its shape can push its own mass of water out of the way without going under. Question What is pressure? Tap to flip Answer The effect of a force acting over an area; a measure of how concentrated a force is. Question What equation gives pressure? Tap to flip Answer Pressure = force ÷ area Question Is pressure higher or lower when a force is concentrated on a small area? Tap to flip Answer Higher. Question What is another name for newtons per square metre? Tap to flip Answer The pascal (Pa). Question Why does pressure in a liquid increase with depth? Tap to flip Answer Because there is more liquid pushing down. Question How does atmospheric pressure change with height, and why? Tap to flip Answer It decreases, because there is less air pushing down. Question How does the surface area of a boat's hull affect the upthrust on it? Tap to flip Answer The bigger the hull's surface area, the bigger the upthrust on it can be. Where this deck sits in the curriculum Curriculum National Curriculum for England Stage Key stage 3 (Years 7–9) Course KS3 Science Unit Hidden forces England's National Curriculum sets what is taught; the units and their order are Oak National Academy's. Flash Feed is not affiliated with Oak or any exam board.
How this deck was checked On 2026-11-02, every card was compared with its source: the lessons of Oak National Academy, a public body funded by England's Department for Education that publishes lessons for the national curriculum. Because the cards come from those lessons, no second source was sought. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
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A Science lesson by Oak National Academy licensed under Open Government Licence (OGL)
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