This is a perfect radiator and absorber and emits radiation dependent only on temperature.
What is a blackbody?
100
This is one of the early models of the atom which is often referred to as the "plum pudding model."
What is Thomson's model?
100
Light behaves as these things.
What is a wave and a particle?
100
12 has this many significant figures.
What is 2?
100
The first microwave ovens were created in this decade: 1970's, 1960's, 1950's, or 1940's.
What is 1950s?
200
This is the failed prediction of classical physics that energy radiated by a blackbody at short wavelengths is large and the total energy radiated is infinite.
What is the ultraviolet catastrophe?
200
This model predicted atoms to be unstable and is often referred to as the "planetary model."
What is Rutherford's model?
200
This states that it is impossible to know the position and momentum of a particle at the same time.
What is Heisenberg's Uncertainty Principle?
200
1,200 has this many significant figures.
What is 2?
200
Acid will turn litmus paper this color.
What is red?
300
This is the emission of electrons from a surface that occurs when light of certain frequency is shined on the surface.
What is the photoelectric effect?
300
This model predicted hydrogen effectively, but not much else. It was the first model to acknowledge energy levels.
What is Bohr's model?
300
This is the probability distribution of an electron's location.
What is the electron cloud?
300
0.000120 has this many significant figures.
What is 3?
300
Between noon and midnight, the hands of a clock form a right angle this many times.
What is 23 times?
400
A photon in a laboratory experiment has an energy of 5.0eV. This is the frequency of the photon.
What is 1.2x10^15 Hz?
400
This is a graph that indicates wavelengths a substance emits.
What is emission spectrum?
400
This is how fast a 0.15kg baseball would need to be thrown to have a wavelength of 5.00x10^-7m.
What is 8.8x10^-27m/s?
400
1.000020 has this many significant figures.
What is 7?
400
The name of this disease means, in Italian, bad air.
What is malaria?
500
Light of wavelength 350nm falls on a potassium surface, and the photo-electrons have a maximum kinetic energy of 1.3eV. Provide the work function of potassium.
What is 3.6x10^-19J?
500
This diagram shows the wavelengths a substance absorbs.
What is absorption spectrum?
500
This is the de Broglie wavelength of a 1,375kg car traveling at 43,000m/s.