Look at the Grand Canyon cross section. What was happening to the Grand Canyon area during the Permian Age? Question 4 options:

Water was rising and lowering, going from beach, to deep sea, back to a beach, then to shallow seas.

Volcanic Activity

The water was a constant shallow sea during that time.

Tectonic activity- lots of faulting and tilting.

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?

This is the substance(s) formed in a chemical reaction.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.