Question

movie watch the movie to learn how scientists study rock strata to make a timeline of earths history. as you watch, record any observations that help you answer the guiding question. 1 according to the movie, how do rock strata form? a gravity causes sediment to settle in layers b earthquakes create large slices in existing rock c layers are pushed upward from earths core d changes in air pressure push rocks downward

Explanation:

Rock strata (sedimentary rock layers) form when sediment (like sand, mud, or small rock fragments) is deposited and settles over time, driven by the force of gravity which pulls the sediment downward to form horizontal layers. The other options describe processes that alter or deform existing rock layers, not form them initially.

Answer:

A. Gravity causes sediment to settle in layers