Fossils & Law of Superposition Homework

Front

What is a mold fossil?

Back

A mold fossil is an impression left by the original organism, showing its shape and surface details.

Front

What is the preservation of actual remains?

Back

It refers to fossils that contain the actual physical remains of the organism, such as bones or teeth.

Front

Which rock layer is the youngest according to the Law of Superposition?

Back

The youngest rock layer is the one that is on top of the other layers.

Front

What is amber?

Back

Amber is fossilized tree resin that can preserve insects and other small organisms.

Front

What does the Law of Superposition state?

Back

The Law of Superposition states that in undisturbed rock layers, the oldest layers are at the bottom and the youngest are at the top.

Front

What is a cast fossil?

Back

A cast fossil is formed when a mold is filled with minerals or other materials, creating a replica of the original organism.

Front

What are trace fossils?

Back

Trace fossils are evidence of an organism's activity, such as footprints, burrows, or feces.

Front

What is the difference between a mold and a cast fossil?

Back

A mold is an impression of the organism, while a cast is a solid copy formed from the mold.

Front

What type of fossil is formed through mineral replacement?

Back

This type of fossil is known as a permineralized fossil, where minerals replace the organic material.

Front

What is the significance of fossils in geology?

Back

Fossils help scientists understand the history of life on Earth and the age of rock layers.