Question

why do volcanoes cause earths climate to get colder?
a. they release heat from inside earth, cooling the planet.
b. they change earths precession.
c. their airborne debris reduces insolation.
d. they accelerate the milankovitch cycle.

Explanation:

Volcanic eruptions release ash and aerosols into the atmosphere. These airborne debris can block sunlight (insolation). When less sunlight reaches the Earth's surface, the planet cools.

• Option A: Volcanoes release heat, but this is negligible compared to solar insolation. The main cooling effect is due to blocking sunlight, not heat release from Earth's interior.
• Option B: Volcanoes do not change Earth's precession. Precession is related to the Earth's axial tilt and rotation.
• Option D: Volcanoes do not accelerate the Milankovitch cycle. The Milankovitch cycle is related to long - term changes in Earth's orbit and axial tilt.

Answer:

C. Their airborne debris reduces insolation.