Grade 8 forces
Quiz by Debra Mulubwa
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20 questions
Show answers
- Q1Which of the following is an example of a contact force?FrictionMagnetismGravityElectromagnetic force30s
- Q2What is the SI unit of force?NewtonMeterKilogramSecond30s
- Q3Which of the following is a property of magnets?Attraction and repulsionConductivityDensitySolubility30s
- Q4Which of the following is an example of a temporary magnet?Bar magnetElectromagnetPaper clip attracted to a magnetRefrigerator magnet30s
- Q5What is the property of a material that allows it to be magnetized?DensityTransparencyFerromagnetismConductivity30s
- Q6What is the purpose of a magnetic compass?Measuring temperatureWeighing objectsCalculating timeDetermining direction30s
- Q7What is the main difference between a permanent magnet and an electromagnet?Permanent magnets do not require an external power source, while electromagnets need an electric currentPermanent magnets are made of different materials than electromagnetsPermanent magnets are weaker than electromagnetsPermanent magnets can be turned on and off, while electromagnets are always magnetic30s
- Q8Which of the following is NOT a method of magnetizing a material?Rubbing it with a magnetDissolving it in waterExposing it to a magnetic fieldPassing an electric current through it30s
- Q9What is the term for the area surrounding a magnet where its magnetic influence can be detected?Gravity fieldSound fieldMagnetic fieldElectric field30s
- Q10What is the name for the phenomenon where a material loses its magnetism when exposed to heat?RemanenceCoercivityPermeabilityCurie temperature30s
- Q11What happens to the magnetic field strength when the distance between a magnet and a magnetic object decreases?The magnetic field strength decreasesThe magnetic field strength remains the sameThe magnetic field strength reversesThe magnetic field strength increases30s
- Q12What is the property of a magnet that allows it to attract objects made of iron or steel?Magnetic forceElectric chargeGravitational forceFrictional force30s
- Q13What happens to the magnetic field strength when the distance from a magnet increases?The magnetic field strength increasesThe magnetic field strength decreasesThe magnetic field becomes repulsiveThe magnetic field strength remains the same30s
- Q14What is the term used to describe the region around a magnet where its magnetic influence can be detected?Friction fieldElectric fieldMagnetic fieldGravity field30s
- Q15What is the term used to describe the phenomenon where a material becomes magnetized when placed in a magnetic field?Magnetic alignmentMagnetic inductionMagnetic attractionMagnetic repulsion30s