anum

What is the primary function of the respiratory system?

• To circulate blood

• To facilitate gas exchange

• To digest food

• To produce hormones

Which of the following is NOT a major component of the respiratory system?

• Lungs

• Diaphragm

• Trachea

• Heart

What property of materials determines how they respond to forces?

• Chemical properties

• Mechanical properties

• Thermal conductivity

• Density

What is the formula for calculating speed?

• speed = distance / time

• speed = distance - time

• speed = time / distance

• speed = distance + time

Which of the following is a scalar quantity?

• Speed

• Acceleration

• Velocity

• Force