IB MYP Grade 8 Physics by Pavan | Practice Test to Test Your Knowledge
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  3. IB MYP Grade 8 Physics
IB MYP Grade 8 Physics

IB MYP Grade 8 Physics

Comprehensive mock test covering Waves, Electricity, Magnetism, Modern Physics, and Optics. Features numerical problems, theory questions, and practical applications based on the latest ICSE syllabus.

2025-07-21
Pavan Pavan
IB Physics Grade 8 Class 8

Duration

30 min

Questions

20

Marking

Negative

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Questions Preview

What is thermal energy?

A
The total kinetic energy of all the particles in a substance
B
The average temperature of a substance
C
The energy used to heat a substance
D
The heat energy required to change the phase of a substance

What is the key difference between temperature and thermal energy?

A
Temperature measures the average kinetic energy of particles, while thermal energy is the total kinetic energy
B
Temperature measures the heat required to raise the substance's temperature, while thermal energy is not related to temperature
C
Temperature measures the amount of heat in a substance, while thermal energy measures its color
D
Temperature and thermal energy are the same

Which of the following best describes conduction?

A
The transfer of heat through the movement of particles in a fluid
B
The transfer of heat through electromagnetic waves
C
The transfer of heat through direct contact between particles
D
The transfer of heat through a vacuum

What is an example of a good conductor of heat?

A
Wood
B
Plastic
C
Copper
D
Glass

Which of the following materials is a good insulator?

A
Air
B
Iron
C
Copper
D
Aluminum

Which process involves the movement of warm air or liquid rising and cooler air or liquid sinking?

A
Conduction
B
Convection
C
Radiation
D
Reflection

What type of heat transfer does not require a medium to transfer heat?

A
Conduction
B
Convection
C
Radiation
D
Evaporation

How does radiation transfer heat?

A
Through direct contact between particles
B
Through the movement of particles in a fluid
C
Through electromagnetic waves
D
Through the conduction of sound waves

What happens to particles in a substance as it heats up?

A
They stop moving
B
They move slower
C
They move faster and spread out
D
They stay in fixed positions

Which of the following is an example of radiation?

A
A metal spoon becoming hot when placed in boiling water
B
Warm air rising in the atmosphere
C
Sunlight warming your skin
D
Ice melting in warm air

What happens when heat is transferred to a substance?

A
Its temperature increases
B
Its temperature decreases
C
It stays the same temperature
D
It freezes

Why does the metal spoon heat up faster than a wooden spoon when both are placed in hot water?

A
Metal has a higher specific heat capacity than wood
B
Wood conducts heat more efficiently than metal
C
Metal is a better conductor of heat than wood
D
Wood has more thermal energy than metal

Which material is used in the production of double-glazed windows for insulation?

A
Air
B
Water
C
Copper
D
Iron

Why do shiny, light-colored surfaces reflect more heat?

A
Because they are good absorbers of heat
B
Because they are poor absorbers and emitters of radiation
C
Because they absorb more thermal radiation
D
Because they conduct heat better

Which of the following is a good insulator?

A
Air
B
Copper
C
Aluminum
D
Iron

What is the primary reason why water has a high specific heat capacity?

A
Because it absorbs a large amount of heat without a large temperature increase
B
Because it has a low molecular weight
C
Because it heats up quickly
D
Because it has a high density

Which of the following formulas is used to calculate heat energy transferred?

A
Q = m * c * ΔT
B
Q = m * v * ΔT
C
Q = m * c * T
D
Q = c * ΔT

What does the specific heat capacity of a substance describe?

A
The amount of heat needed to raise the temperature of 1 kilogram of a substance by 1 degree Celsius
B
The amount of heat required to melt 1 kilogram of a substance
C
The amount of heat required to boil 1 liter of a substance
D
The amount of heat released by a substance when it cools

What happens to the temperature of a substance when it is heated?

A
The temperature increases as the particles move faster
B
The temperature decreases as the particles slow down
C
The temperature remains constant
D
The temperature increases only when the substance reaches a boiling point

Which material would heat up the fastest when exposed to sunlight?

A
Black material
B
White material
C
Silver material
D
Glass material