Question

The moon has less gravity than Earth. How might this affect vestibular sensation of an astronaut on the Moon?

a) It would not affect vestibular sensation.
b) It would cause dizziness and vertigo.
c) It would decrease the astronaut's sensitivity to motion changes.
d) It would disrupt the astronaut's balance and spatial orientation.

Answer 1

Reduced gravity on the Moon affects vestibular sensation due to the altered response of tiny crystals in the inner ear, causing impaired balance and spatial orientation.

Step-by-step explanation:

The vestibular sensation is closely linked to gravity because it relies on the effects of gravity on tiny crystals located in the inner ear. These otolith crystals move in response to gravity and acceleration, allowing us to sense orientation and balance. On the Moon, where gravity is significantly less than on Earth, these crystals would not respond as effectively, leading to impaired vestibular sensation. This impairment can disrupt the astronaut's balance and spatial orientation, potentially causing symptoms like dizziness and vertigo. Hence, the effect of reduced gravity on the Moon would likely impede the astronaut's sensitivity to motion changes and challenge their balance and spatial understanding.