Science 8 Semester 1 Exam Review pt 1

Front

Which rock layer contains the newest fossils?

Back

The newest fossils are found in the uppermost rock layers.

Front

What type of energy is stored in an object due to its position?

Back

Potential energy is the energy stored in an object due to its position or state.

Front

What does the Geologic Time Scale represent?

Back

The Geologic Time Scale is a record of the known history of rocks and fossils.

Front

What does relative dating of rock layers indicate about the age of rocks?

Back

The deeper the rock layer, the older the rocks are.

Front

What is a neutral mutation?

Back

A neutral mutation is a change in DNA that does not affect the population or the health of the species.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion.

Front

Define fossil.

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

What is the principle of superposition in geology?

Back

The principle 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 mutation?

Back

A mutation is a change in the DNA sequence of an organism.

Front

What is the difference between potential and kinetic energy?

Back

Potential energy is stored energy based on position, while kinetic energy is energy of motion.