Unit 3: EMSPEC

Question 1

Wave

Answer 1

The transfer of energy from place to place.

Question 2

Wavelength

Answer 2

The distance between two high points.

Question 3

Frequency

Answer 3

The # of waves that pass by a point in a given amount of time.

Question 4

Electromagnetic Radiation

Answer 4

Light that is given off when electrons move from a high energy level to a low energy level in an atom.

Question 5

Electromagnetic Spectrum

Answer 5

The entire range of wavelength/energy of electromagnetic waves.

Question 6

Ionizing Radiation

Answer 6

Electromagnetic radiation w/ enough energy to ionize (remove electron) an atom. Changes its chemical properties.

Question 7

Non-ionizing Radiation

Answer 7

Electromagnetic radiation (light) that does not have enough energy to ionize (remove electron).

Question 8

Emission Spectrum

Answer 8

Color of light given off by an atom of an element. Depends upon the arrangement of electrons in that atom.

Question 9

Absorption Spectrum

Answer 9

Colors of light that are absorbed by an atom of an element. Depends upon the arrangement of the electrons in that atom.

Question 10

Red Shift (away)

Answer 10

When the light from an object shifts toward the red end of the spectrum due to its movement AWAY from the observer.

Question 11

Blue Shift (toward us)

Answer 11

When the light from an object shifts toward the blue end of the spectrum due to its movement toward the observer.