Lesson T2.2.4
T2.2.4 Friction and drag Quiz: KS3 Physics, Unit 2
20 questions
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Lesson T2.2.4, Friction and drag: 20 multiple choice questions for the KS3 Physics (National Curriculum), Unit 2: Motion and forces, written with Revision Ninja.
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The 20 questions
-
Which term describes a contact force that opposes motion between touching surfaces?
- Tension
- Gravity
- Friction
- Magnetism
-
When a box slides across a floor, kinetic energy is mainly transferred into what?
- Chemical energy
- Nuclear energy
- Thermal energy
- Elastic energy
-
What is the main purpose of tread patterns on car tyres?
- Reducing heat
- Reducing weight
- Increasing grip
- Increasing mass
-
What is the main purpose of using oil as a lubricant between moving parts?
- Reducing friction
- Increasing speed
- Adding weight
- Increasing grip
-
Which change increases the friction between two solid surfaces?
- Pressing harder
- Smoothing surfaces
- Adding oil
- Reducing area
-
How does air resistance acting on a cyclist change as their speed increases?
- It stays zero
- It stays constant
- It decreases
- It increases
-
Why does a streamlined car shape help improve fuel economy?
- Reduces drag
- Increases thrust
- Increases grip
- Reduces mass
-
What term describes the resistance that a fluid exerts on a moving object?
- Weight
- Tension
- Thrust
- Drag
-
What happens to the terminal speed of a skydiver when a parachute opens?
- It increases
- It doubles instantly
- It stays constant
- It decreases
-
A 12 N force pushes a box at constant speed across a floor. What is the friction force?
- 24 N
- 6 N
- 0 N
- 12 N
-
What main energy transfer happens when a brake pad slows a spinning wheel?
- Kinetic to chemical
- Kinetic to thermal
- Thermal to kinetic
- Chemical to thermal
-
Why do objects slide easily across ice?
- Magnetic force
- Low friction
- High friction
- Zero gravity
-
Why does a feather fall more slowly than a stone?
- Zero weight
- Strong magnetism
- High air resistance
- High density
-
Which surface would produce the most friction for a block sliding across it?
- Smooth polished glass
- Ice
- Lightly oiled metal
- Rough sandpaper
-
Which force slows a car down when its brakes are applied?
- Gravity
- Magnetism
- Friction
- Upthrust
-
A sledge slides fastest over which surface?
- Sandpaper
- Smooth, wet ice
- Rough gravel
- Dry carpet
-
Why do football boots feature studs on the sole?
- Increase grip
- Increase speed
- Reduce weight
- Reduce friction
-
What is true about the forces when a cyclist travels at a steady speed?
- Forces are balanced
- Gravity is absent
- Forces are zero
- Forces are unbalanced
-
What does friction produce when a match is struck?
- Gravitational potential
- Chemical energy
- Thermal energy
- Magnetic force
-
A sledge has 40 N of drag and is pulled forward with 25 N. What is the resultant force?
- 65 N forwards
- 40 N forwards
- 25 N forwards
- 15 N backwards
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