Physics Grade 8 Worksheet with Answers & Notes

Forces and Motion (Speed, Friction, and Gravity)

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Forces and Motion (Speed, Friction, and Gravity) under Physics for Grade 8 IGCSE.

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1.
$60\text{ km/h}$
A. $Distance$
B. $Instantaneous speed$
C. $Mass$
D. $Acceleration$
2.
$Which of these items would be most useful to measure the time it takes for a ball to roll down a ramp?$
A. $A thermometer$
B. $A measuring cylinder$
C. $A stopwatch$
D. $A ruler$
3.
$To calculate average speed, you need to know the total distance and the:$
A. $Total force$
B. $Total time$
C. $Total mass$
D. $Total weight$
4.
$10\text{ kg}$
A. $1.6\text{ kg}$
B. $10\text{ kg}$
C. $60\text{ kg}$
D. $0\text{ kg}$
5.
$4 km$
A. $2 minutes$
B. $30 minutes$
C. $15 minutes$
D. $120 minutes$
6.
$What happens to the weight of an astronaut as they move further away from Earth into space?$
A. $Increases$
B. $Decreases$
C. $Stays the same$
D. $Becomes negative$
7.
$100 km$
A. $140 km$
B. $60 km$
C. $70 km$
D. $200 km$
8.
$A wooden block is placed on a ramp. As the angle of the ramp is increased, the block eventually begins to slide. This is because:$
A. $The mass of the block increases as the angle increases.$
B. $The frictional force between the block and the ramp increases.$
C. $The component of the block's weight acting down the slope exceeds the maximum static friction.$
D. $Gravity becomes stronger as the block is tilted.$
9.
$400\text{ meters}$
A. $20 seconds$
B. $40 seconds$
C. $50 seconds$
D. $100 seconds$
10.
$1\text{ kg}$
A. $The mass of the object decreases as it moves away from Earth's center.$
B. $g$
C. $Air pressure at high altitudes reduces the effect of gravity.$
D. $The object's inertia increases as it moves higher.$

Download the worksheet for Physics - Forces and Motion (Speed, Friction, and Gravity) to practice offline. It includes additional chapter-level practice questions.

Energy Transfers and Conservation

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Energy Transfers and Conservation under Physics for Grade 8 IGCSE.

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1.
$When a drill is used to make a hole in wood, the drill bit gets hot. This is because kinetic energy is being transferred to which store?$
A. $Chemical store$
B. $Thermal store$
C. $Magnetic store$
D. $Nuclear store$
2.
$5\text{ N}$
A. $2.5\text{ J}$
B. $7\text{ J}$
C. $10\text{ J}$
D. $0.4\text{ J}$
3.
$A pair of headphones transfers electrical energy primarily into which pathway?$
A. $Thermal heating$
B. $Mechanical work$
C. $Sound waves$
D. $Chemical storage$
4.
$Which surface would be the best absorber of thermal radiation from the Sun?$
A. $Shiny silver$
B. $Dull white$
C. $Matte black$
D. $Clear glass$
5.
$150\text{ J}$
A. $150\text{ W}$
B. $15\text{ W}$
C. $300\text{ W}$
D. $1.5\text{ W}$
6.
$What type of energy is stored in a stretched rubber band?$
A. $Kinetic$
B. $Gravitational potential$
C. $Elastic potential$
D. $Chemical$
7.
$10\text{ N}$
A. $20\text{ J}$
B. $5\text{ J}$
C. $10.5\text{ J}$
D. $2\text{ J}$
8.
$Which of the following describes the 'Principle of Conservation of Energy'?$
A. $The total energy in an open system increases over time$
B. $Energy can be created from nothing if the force is large enough$
C. $Energy cannot be created or destroyed, only transformed$
D. $The useful energy output is always equal to the total energy input$
9.
$2\text{ m}^2$
A. $150 W$
B. $300 W$
C. $1500 W$
D. $2000 W$
10.
$3000\text{ W}$
A. $30 J$
B. $300 J$
C. $30,000 J$
D. $300,000 J$

Download the worksheet for Physics - Energy Transfers and Conservation to practice offline. It includes additional chapter-level practice questions.

Light (Reflection, Refraction, and Color)

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Light (Reflection, Refraction, and Color) under Physics for Grade 8 IGCSE.

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1.
$What color is a magenta object in green light?$
A. $Magenta$
B. $Red$
C. $Blue$
D. $Black$
2.
$0^{\circ}$
A. $90^{\circ}$
B. $180^{\circ}$
C. $0^{\circ}$
D. $45^{\circ}$
3.
$Which color of light is refracted the least by a prism?$
A. $Violet$
B. $Blue$
C. $Green$
D. $Red$
4.
$In the context of light, what does 'transmission' mean?$
A. $Light bouncing off a surface$
B. $Light passing through a material$
C. $Light being soaked up by a material$
D. $Light splitting into colors$
5.
$R$
A. $Red$
B. $Green$
C. $Blue$
D. $Black$
6.
$Which of the following is a characteristic of a 'virtual' image?$
A. $It can be projected onto a screen$
B. $It is always upside down$
C. $It is formed where light rays actually meet$
D. $It cannot be caught on a screen$
7.
$x$
A. $90 - x$
B. $2x$
C. $x$
D. $180 - x$
8.
$n=1.6$
A. $41^{\circ}$
B. $61^{\circ}$
C. $49^{\circ}$
D. $No critical angle exists$
9.
$Which of the following is NOT a property of a virtual image formed by a plane mirror?$
A. $It is upright$
B. $It is the same size as the object$
C. $It can be projected onto a screen$
D. $It is as far behind the mirror as the object is in front$
10.
$Which phenomenon is responsible for the 'shimmering' of air above a hot road?$
A. $Total internal reflection$
B. $Atmospheric refraction$
C. $Diffuse reflection$
D. $Dispersion$

Download the worksheet for Physics - Light (Reflection, Refraction, and Color) to practice offline. It includes additional chapter-level practice questions.

Sound Waves and Vibrations

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Sound Waves and Vibrations under Physics for Grade 8 IGCSE.

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1.
$Which of the following describes the relationship between pitch and frequency?$
A. $Higher frequency results in a higher pitch$
B. $Lower frequency results in a higher pitch$
C. $Frequency does not affect pitch$
D. $Higher frequency results in a louder sound$
2.
$If an object vibrates 50 times in one second, what is its frequency?$
A. $50\text{ Hz}$
B. $0.5\text{ Hz}$
C. $500\text{ Hz}$
D. $5\text{ Hz}$
3.
$Which of these has the highest frequency?$
A. $A low-pitched bass drum$
B. $A person talking$
C. $A squeaky mouse$
D. $A humming refrigerator$
4.
$What happens to sound waves when they strike a flat, hard wall?$
A. $They are all absorbed$
B. $They are reflected$
C. $They disappear$
D. $They turn into light$
5.
$What is the result of 'destructive interference' between two identical sound waves?$
A. $The sound becomes much louder.$
B. $The pitch of the sound increases.$
C. $The sound waves cancel each other out, resulting in silence or lower volume.$
D. $The sound waves change into light waves.$
6.
$Why does sound travel faster in water than in air?$
A. $Water is more compressible than air.$
B. $Water molecules are much closer together than air molecules.$
C. $Water is always at a higher temperature than air.$
D. $Water molecules are lighter than air molecules.$
7.
$Which of the following is an example of a practical use for ultrasound in medicine?$
A. $Sterilizing surgical equipment with heat$
B. $X-raying broken bones$
C. $Imaging a developing fetus in the womb$
D. $Testing the patient's eyesight$
8.
$T$
A. $f = T^2$
B. $f = 1/T$
C. $f = v \times T$
D. $f = T/v$
9.
$10\text{ cm}$
A. $1,360\text{ m/s}$
B. $85\text{ m/s}$
C. $680\text{ m/s}$
D. $1,700\text{ m/s}$
10.
$In which of the following scenarios is the speed of sound the greatest?$
A. $0\text{ K}$
B. $20^\circ\text{C}$
C. $20^\circ\text{C}$
D. $20^\circ\text{C}$

Download the worksheet for Physics - Sound Waves and Vibrations to practice offline. It includes additional chapter-level practice questions.

Magnetism and Electromagnets

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Magnetism and Electromagnets under Physics for Grade 8 IGCSE.

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1.
$Which of these statements about magnetic poles is TRUE?$
A. $Magnets can have just a North pole$
B. $A South pole attracts another South pole$
C. $Magnets always come with both a North and a South pole$
D. $The poles are the weakest part of a magnet$
2.
$What property of a magnet is used in Maglev (magnetic levitation) trains?$
A. $Attraction only$
B. $Repulsion only$
C. $Both attraction and repulsion$
D. $Friction$
3.
$Which part of an electric bell uses magnetism to strike the gong?$
A. $The plastic handle$
B. $The electromagnet$
C. $The battery casing$
D. $The wooden base$
4.
$What type of force is magnetism?$
A. $Contact force$
B. $Non-contact force$
C. $Frictional force$
D. $Upthrust$
5.
$What happens if a magnet is hammered repeatedly?$
A. $It becomes a stronger magnet.$
B. $The domains become more aligned.$
C. $The domains become misaligned, and it loses magnetism.$
D. $Its magnetic poles swap positions.$
6.
$How does the magnetic field inside a coil compare to the field outside the coil?$
A. $It is much weaker inside.$
B. $It is much stronger and more concentrated inside.$
C. $It is exactly the same strength.$
D. $There is no field inside the coil.$
7.
$Which of these materials is specifically known as a 'soft' magnetic material?$
A. $Hardened Steel$
B. $Pure Iron$
C. $Alnico$
D. $Neodymium$
8.
$A student notices that a heavy steel bolt, which was previously non-magnetic, becomes magnetic after being left near a strong magnet for several weeks. This is an example of:$
A. $Contact electrification$
B. $Magnetic saturation$
C. $Magnetic induction$
D. $Electromagnetic radiation$
9.
$In a DC motor, what is the purpose of the 'Split-ring Commutator'?$
A. $To increase the strength of the permanent magnets$
B. $To reverse the direction of current in the coil every half-turn to keep it rotating in one direction$
C. $To prevent the wires from getting tangled as the motor spins$
D. $To convert the AC current from the battery into DC current$
10.
$What is the 'Motor Effect'?$
A. $The generation of electricity by moving a magnet in a coil$
B. $The force experienced by a current-carrying conductor in a magnetic field$
C. $The ability of a magnet to attract iron objects$
D. $The heating of a wire when a large current passes through it$

Download the worksheet for Physics - Magnetism and Electromagnets to practice offline. It includes additional chapter-level practice questions.

Electricity and Simple Circuits

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Electricity and Simple Circuits under Physics for Grade 8 IGCSE.

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1.
$In the provided series circuit diagram, what is the primary function of the component labeled with the symbol of a circle and a cross?$
A. $To measure the electrical current in the circuit$
B. $To convert electrical energy into light energy$
C. $To provide the electrical energy for the circuit$
D. $To open and close the circuit path$
2.
$In the circuit shown, what is the primary component responsible for providing the energy to the electrons to move around the circuit?$
A. $The Switch$
B. $The Lamp$
C. $The Battery$
D. $The Connecting Wires$
3.
$What is the standard unit of measurement for electrical resistance?$
A. $A$
B. $V$
C. $\Omega$
D. $W$
4.
$How should a voltmeter be connected to measure the voltage across a lamp?$
A. $In series with the lamp$
B. $In parallel with the lamp$
C. $Directly to the battery only$
D. $Between the switch and the wire$
5.
$A student builds a circuit with two lamps connected in parallel as shown. What happens to the brightness of the remaining lamp if one lamp is removed or breaks?$
A. $It stays the same brightness$
B. $It goes out$
C. $It becomes much dimmer$
D. $It flashes on and off$
6.
$6V$
A. $6V$
B. $3V$
C. $0V$
D. $12V$
7.
$A student wants to measure the total current in this parallel circuit. Where should the ammeter be placed?$
A. $In a branch with one lamp$
B. $Next to the battery in the main loop$
C. $In parallel with the battery$
D. $In parallel with the lamps$
8.
$12\, \Omega$
A. $0.50 A$
B. $0.75 A$
C. $1.50 A$
D. $2.25 A$
9.
$A student uses a long piece of uniform nichrome wire in a circuit. She measures the current. She then folds the wire exactly in half and connects the two folded halves in parallel into the same circuit. How does the total resistance of the nichrome section change?$
A. $It stays the same.$
B. $It is reduced to half of the original resistance.$
C. $It is reduced to one-quarter of the original resistance.$
D. $It doubles because there are now two paths.$
10.
$A logic gate circuit is simulated using switches. If Switch A and Switch B are placed in parallel with each other, and this combination is then placed in series with a lamp and a battery, which statement correctly describes the condition for the lamp to light up?$
A. $Both Switch A AND Switch B must be closed.$
B. $Neither Switch A NOR Switch B can be closed.$
C. $Either Switch A OR Switch B (or both) must be closed.$
D. $Switch A must be closed AND Switch B must be open.$

Download the worksheet for Physics - Electricity and Simple Circuits to practice offline. It includes additional chapter-level practice questions.

Space and the Solar System

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Space and the Solar System under Physics for Grade 8 IGCSE.

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1.
$Which planet is often called the Morning Star or Evening Star?$
A. $Venus$
B. $Mars$
C. $Saturn$
D. $Jupiter$
2.
$What is the main difference between a star and a planet?$
A. $Stars are solid, planets are gas$
B. $Stars emit light, planets reflect light$
C. $Planets are larger than stars$
D. $Planets orbit the Moon, stars orbit the Earth$
3.
$Which of the following contains the most mass in our Solar System?$
A. $Jupiter$
B. $The Sun$
C. $Earth$
D. $All the planets combined$
4.
$The tail of a comet always points:$
A. $Towards the Sun$
B. $Away from the Sun$
C. $Towards the Earth$
D. $In the direction of travel$
5.
$Which of the following is true about the speed of a planet in its elliptical orbit around the Sun?$
A. $The planet moves at a constant speed throughout its entire orbit$
B. $The planet moves fastest when it is closest to the Sun$
C. $The planet moves slowest when it is closest to the Sun$
D. $The speed of the planet depends only on its rotation rate, not its orbit$
6.
$What is the most likely future of our Sun when it runs out of hydrogen fuel in its core?$
A. $It will immediately turn into a black hole$
B. $It will expand into a Red Giant before eventually becoming a White Dwarf$
C. $It will explode as a Supernova and destroy the entire galaxy$
D. $It will shrink into a planet like Jupiter$
7.
$Why is Pluto no longer classified as a 'major planet'?$
A. $It has left the solar system$
B. $It has been reclassified as a 'dwarf planet' because it has not cleared its orbital path$
C. $It was discovered to be a moon of Neptune$
D. $It stopped orbiting the Sun and started orbiting a star in another system$
8.
$What is the 'Astronomical Unit' (AU) based on?$
A. $The distance light travels in one minute$
B. $The average distance between the Earth and the Sun$
C. $The diameter of the Milky Way$
D. $The distance between the Sun and its nearest star, Proxima Centauri$
9.
$Which of the following describes a 'Neutron Star'?$
A. $A star made entirely of hydrogen gas$
B. $The extremely dense remains of a massive star, composed almost entirely of neutrons$
C. $A star that has not yet begun nuclear fusion$
D. $A giant planet that failed to become a star$
10.
$If a star is moving towards Earth, its light will be shifted towards which end of the electromagnetic spectrum?$
A. $Red (longer wavelength)$
B. $Blue (shorter wavelength)$
C. $Infrared$
D. $Microwave$

Download the worksheet for Physics - Space and the Solar System to practice offline. It includes additional chapter-level practice questions.

Physics

Forces and Motion (Speed, Friction, and Gravity)

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Energy Transfers and Conservation

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Light (Reflection, Refraction, and Color)

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Sound Waves and Vibrations

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Magnetism and Electromagnets

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Electricity and Simple Circuits

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Space and the Solar System

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