213 PPT6 SI Units Quiz

drag and drop the measurements to their correct place

• Kelvin(k)

• Length

• Seconds (s)

• Mass

• Metres(M)

• Electric current

• Ampere(A)

• Time

• Kilogram(Kg)

• Scientific Unit of measurement for temperature

Which symbol represents the SI unit for mass?

• M

• s

• Kg

• A

Answer explanation

The SI unit for mass is represented by the symbol 'kg', which stands for kilogram. The other options, 'M', 's', and 'A', represent different units: meter, second, and ampere, respectively.

What is the base quantity for the unit 'Second'?

• Length

• Mass

• Time

• Electric current

Answer explanation

The unit 'Second' is defined as the base quantity for measuring time in the International System of Units (SI). Therefore, the correct answer is 'Time'.

What is the symbol for the SI unit of thermodynamic temperature?

• K

• M

• A

• s

Answer explanation

The symbol for the SI unit of thermodynamic temperature is 'K', which stands for Kelvin. This unit is used to measure temperature in scientific contexts, distinguishing it from other temperature scales.

What is the SI unit for velocity?

• m/s

• m/s²

• N

• Pa

Answer explanation

The SI unit for velocity is meters per second (m/s). This unit measures the distance traveled in meters for each second of time, making it the correct choice among the options provided.

Which of the following is the SI unit for acceleration?

• l/s

• m/s²

• N

• Pa

Answer explanation

The SI unit for acceleration is meters per second squared (m/s²). This unit indicates how much the velocity of an object changes per second, making it the correct choice among the options provided.

What is the SI unit for flow rate?

• m/s

• m/s²

• l/s or l/m

• Pa

Answer explanation

The SI unit for flow rate is liters per second (l/s) or liters per minute (l/m), as it measures the volume of fluid passing a point per unit time. Other options like m/s and Pa are units for speed and pressure, respectively.

Which unit is used to measure force in the SI system?

• m/s

• m/s²

• N

• Pa

Answer explanation

The unit used to measure force in the SI system is the Newton, represented by 'N'. Other options like m/s and m/s² measure speed and acceleration, respectively, while Pa measures pressure.

What is the SI unit for pressure?

• m/s

• m/s²

• N

• Pa

Answer explanation

The SI unit for pressure is the Pascal (Pa), which is defined as one newton per square meter (N/m²). Other options like m/s and m/s² represent different physical quantities, not pressure.

What is the rate at which an object changes its position, taking into account speed and direction?

• Acceleration

• Velocity

• Force

• Flow rate

Answer explanation

Velocity is the rate at which an object changes its position, incorporating both speed and direction. Unlike speed, which is scalar, velocity is a vector quantity, making it the correct answer.