17 Questions
Which of the following is an example of a non-contact force?
Gravity
How can friction be increased?
Increase the weight of the objects in contact
What is the correct definition of mass?
A measure of the amount of matter in an object
What force takes place when a bullet is fired from a pistol?
Air resistance
Which of the following is a base quantity among the 7 base quantities mentioned in the text?
Electric current
How does a car moving at a steady speed demonstrate Newton's first law?
By maintaining constant velocity without any net external force
What category do quantities like height and depth fall under based on the text?
Base quantities
A derived quantity is expressed using:
Base quantities
What type of quantity does not need other quantities to be expressed according to the text?
Fundamental quantities
Which of the following is an example of a derived quantity mentioned in the text?
$Area ( l×b )$
How many fundamental or base quantities are there according to the text?
7
What is the purpose of purification methods in science?
To separate mixtures into pure substances using physical methods
Which method is suitable for separating an insoluble solid from a liquid?
Filtration
What is the purpose of a filter paper in the process of filtration?
To trap the solid particles
In filtration, what is the pure substance that passes through the filter paper called?
Filtrate
Which of the following is NOT a method of purification according to the text?
Chemical reactions
What type of substances can be separated by purification methods?
Mixtures into pure substances
Review key topics including methods of purification and analysis (filtration, evaporation, crystallisation, distillation), physical quantities (fundamental and derived quantities), and force and motion (scalars and vectors, speed and velocity, types of forces). Practice calculating mass, weight, and gravitational acceleration.
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