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Physics

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Matter (Kinetic Theory)

Subtopic

Matter (Kinetic Theory) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which state of matter has neither a fixed shape nor a fixed volume?

    A.

    Solid

    B.

    Liquid

    C.

    Gas

    D.

    Ice

  2. 2.

    The motion of molecules in a gas is:

    A.

    Random and in all directions

    B.

    Fixed and vibratory

    C.

    Only in one direction

    D.

    Circular only

  3. 3.

    Fusion is another term used for:

    A.

    Boiling

    B.

    Freezing

    C.

    Melting

    D.

    Condensation

Download the worksheet for Physics - Matter (Kinetic Theory) to practice offline. It includes additional chapter-level practice questions.

Physical Quantities and Measurement (Density and Relative Density)

Subtopic

Physical Quantities and Measurement (Density and Relative Density) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The mass of a wooden block is 120g120 g and its volume is 200cm3200 cm^3. Its density is:

    A.

    0.6g/cm30.6 g/cm^3

    B.

    1.6g/cm31.6 g/cm^3

    C.

    0.8g/cm30.8 g/cm^3

    D.

    2.4g/cm32.4 g/cm^3

  2. 2.

    When salt is dissolved in water, the density of the solution:

    A.

    Increases

    B.

    Decreases

    C.

    Remains the same

    D.

    Becomes less than ice

  3. 3.

    A piece of cork has a density of 0.25g/cm30.25 g/cm^3. What is its Relative Density?

    A.

    0.250.25

    B.

    2.52.5

    C.

    2525

    D.

    250250

Download the worksheet for Physics - Physical Quantities and Measurement (Density and Relative Density) to practice offline. It includes additional chapter-level practice questions.

Force and Pressure (Turning effect, Fluid pressure, Atmospheric pressure)

Subtopic

Force and Pressure (Turning effect, Fluid pressure, Atmospheric pressure) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The steering wheel of a car is an example of:

    A.

    Pure thrust

    B.

    Linear motion

    C.

    Turning effect of force

    D.

    Fluid pressure

  2. 2.

    A person stands on a mattress and then lies down on it. In which case is the mattress compressed more?

    A.

    Lying down

    B.

    Standing

    C.

    Both are the same

    D.

    The mattress is never compressed

  3. 3.

    Atmospheric pressure is maximum at:

    A.

    The top of Mt. Everest

    B.

    Sea level

    C.

    The center of the Earth

    D.

    Inside a flying airplane

Download the worksheet for Physics - Force and Pressure (Turning effect, Fluid pressure, Atmospheric pressure) to practice offline. It includes additional chapter-level practice questions.

Energy (Work, Power, Kinetic and Potential Energy)

Subtopic

Energy (Work, Power, Kinetic and Potential Energy) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    When we wind a watch spring, we store energy in it in the form of:

    A.

    Kinetic energy

    B.

    Potential energy

    C.

    Heat energy

    D.

    Electrical energy

  2. 2.

    Which energy is produced when we ring a school bell?

    A.

    Solar energy

    B.

    Sound energy

    C.

    Light energy

    D.

    Chemical energy

  3. 3.

    A body at a certain height above the ground has 100 J of potential energy. If it falls halfway, its potential energy becomes:

    A.

    0 J

    B.

    50 J

    C.

    100 J

    D.

    200 J

Download the worksheet for Physics - Energy (Work, Power, Kinetic and Potential Energy) to practice offline. It includes additional chapter-level practice questions.

Light Energy (Refraction, Lenses, Dispersion)

Subtopic

Light Energy (Refraction, Lenses, Dispersion) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A ray of light traveling from air into a diamond (very dense) will:

    A.

    Bend significantly towards the normal

    B.

    Bend significantly away from the normal

    C.

    Go straight through

    D.

    Turn back into the air

  2. 2.

    What happens to the focal length of a lens if its surfaces are made more curved (more bulging)?

    A.

    It increases

    B.

    It decreases

    C.

    It remains the same

    D.

    It becomes zero

  3. 3.

    Which of the following occurs because light travels at different speeds in different colors through a prism?

    A.

    Reflection

    B.

    Dispersion

    C.

    Rectilinear propagation

    D.

    Shadow formation

Download the worksheet for Physics - Light Energy (Refraction, Lenses, Dispersion) to practice offline. It includes additional chapter-level practice questions.

Heat Transfer (Conduction, Convection, Radiation, Thermal Expansion)

Subtopic

Heat Transfer (Conduction, Convection, Radiation, Thermal Expansion) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Normal human body temperature is approximately:

    A.

    37∘C37^{\circ}C

    B.

    42∘C42^{\circ}C

    C.

    98∘C98^{\circ}C

    D.

    100∘C100^{\circ}C

  2. 2.

    How many Joules make up one kilocalorie?

    A.

    4.24.2 J

    B.

    4242 J

    C.

    420420 J

    D.

    42004200 J

  3. 3.

    What is the boiling point of pure water at sea level?

    A.

    0∘C0^{\circ}C

    B.

    37∘C37^{\circ}C

    C.

    100∘C100^{\circ}C

    D.

    212∘C212^{\circ}C

Download the worksheet for Physics - Heat Transfer (Conduction, Convection, Radiation, Thermal Expansion) to practice offline. It includes additional chapter-level practice questions.

Sound (Production, Propagation, Amplitude, Pitch)

Subtopic

Sound (Production, Propagation, Amplitude, Pitch) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following frequencies is in the ultrasonic range?

    A.

    5 Hz

    B.

    500 Hz

    C.

    5,000 Hz

    D.

    50,000 Hz

  2. 2.

    Which of these will have the highest pitch?

    A.

    Buzzing of a bee

    B.

    Roar of a lion

    C.

    Beating of a drum

    D.

    Sound of a large bell

  3. 3.

    How does sound travel from a ringing bell to your ears?

    A.

    The bell moves to your ear

    B.

    Air molecules travel from the bell to your ear

    C.

    Vibrations are passed from one air molecule to the next

    D.

    It travels as light

Download the worksheet for Physics - Sound (Production, Propagation, Amplitude, Pitch) to practice offline. It includes additional chapter-level practice questions.

Electricity (Static Electricity, Current, Circuits, Heating/Chemical effects)

Subtopic

Electricity (Static Electricity, Current, Circuits, Heating/Chemical effects) under Physics for Grade 8 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In a household circuit, the wire that carries the current to the appliance and is at a high potential is the:

    A.

    Neutral wire

    B.

    Earth wire

    C.

    Live wire

    D.

    Base wire

  2. 2.

    An electric cell is a device that converts:

    A.

    Mechanical energy to electrical energy

    B.

    Chemical energy to electrical energy

    C.

    Heat energy to electrical energy

    D.

    Light energy to electrical energy

  3. 3.

    Which instrument is used to measure the strength of electric current in a circuit?

    A.

    Voltmeter

    B.

    Ammeter

    C.

    Thermometer

    D.

    Barometer

Download the worksheet for Physics - Electricity (Static Electricity, Current, Circuits, Heating/Chemical effects) to practice offline. It includes additional chapter-level practice questions.

Physics - ICSE Class 8 Science Notes & Revision | Krit.club