Question

gravity compression/compaction
friction: meteorites and asteroid striking the earth
friction: formation of earth as denser material is sinking
meteorites and comets
volcanic eruptions
sun

1. compared to earths continental crust, earths oceanic crust is *

thinner and more dense
thicker and more dense
thicker and less dense

Explanation:

Oceanic crust is formed at mid-ocean ridges and is composed of denser basaltic rock, while continental crust is made of less dense granitic rock. Oceanic crust averages 5-10 km in thickness, far thinner than continental crust which averages 30-50 km (and up to 70 km in mountainous regions).

Answer:

Thinner and more dense