Earth & Space Exam Review FALL

Front

What explains the colors of various wavelengths?

Back

Light waves bending around barriers.

Front

What is the process of determining the age of a fossil by comparing it to other layers?

Back

Relative dating.

Front

What type of spectrum is produced when heating a dense piece of matter?

Back

A continuous spectrum.

Front

If a radioactive substance has decayed from 40 mg to 10 mg, how many half-lives have passed?

Back

2 half-lives.

Front

Which color of light has the shortest wavelength?

Back

Violet light.

Front

What is the term for the bending of light waves around barriers?

Back

Diffraction.

Front

What is the difference between absolute dating and relative dating?

Back

Absolute dating provides a specific age, while relative dating places events in order without exact dates.

Front

What is an emission spectrum?

Back

A spectrum that shows the wavelengths of light emitted by a substance.

Front

What is an absorption spectrum?

Back

A spectrum that shows the wavelengths of light absorbed by a substance.

Front

What is radiometric dating?

Back

A method used to date materials by comparing the abundance of a radioactive isotope to its decay products.