Definition: This law states that in an undisturbed rock sequence, the oldest layers are on the bottom and each successive layer is younger than the one underneath it. "Sedimentary layers are deposited in a time sequence, with the oldest on the bottom and the youngest on the top."

Example: The illustration shows fossils in layers on sedimentary rock, with the youngest fossils in the top layer and oldest fossils in the bottom layer of rock.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters