the concept that earth was shaped by catastrophic events of a short-term nature
principle that Earth's processes occurring today are similar to those that occurred in the past
Decayed remains of once living creatures
inorganic crystalline substances found naturally in the earth
the process that crumbles, cracks, and breaks rocks slow change by wind and water
The process by which wind, water, ice, or gravity transports soil and sediment from one location to another
where there is gap in the rock layers
rock formed from cooled magma or lava
A type of rock formed from either sediments or igneous rocks
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.