Light

Question 0

“Pieces” of light characterized by energy

Answer 0

Photons

Question 1

Electromagnetic radiation categories from shortest to longest

Answer 1

Gamma, x, uv, visible light, infrared, micro, radio

Question 2

Cycles per second, 2 ripples

Answer 2

Hertz, 2 hertz

Question 3

Atomic number

Answer 3

Number of protons

Question 4

Atomic mass number

Answer 4

Number of protons + neutrons

Question 5

Transmission

Answer 5

Allows light to pass through, light

Question 6

Opaque materials do what to light?

Answer 6

Absorb it

Question 7

A red chair is red because it _____ red light and _______ all other colors

Answer 7

Scatters, absorbs

Question 8

Ion

Answer 8

Atom that has fewer electrons than protons

Question 9

Thermal radiation

Answer 9

Radiation with a spectrum whose shape depends only on the temperature of the emitting object

Question 10

Law of thermal radiation #1

Answer 10

Stefan-Boltzmann law: each square meter of a hotter object’s surface emits more light at all wavelengths

Question 11

Law of thermal radiation #2

Answer 11

Wien’s law: hotter objects emit photons with higher average energy

Question 12

Chemical composition of a star is determined by

Answer 12

Wavelengths of spectral lines in the star’s spectrum

Question 13

Nebular theory

Answer 13

Our solar system formed from the collapse of an interstellar cloud of gas and dust

Question 14

Most abundant materials in the solar nebula (ordered most abundant to least)

Answer 14

Hydrogen & helium gas, hydrogen compounds (water, methane, ammonia), rock, metal