Flashcards in Chapter 15-16 Deck (60):
Scientists don't use colour names because they're somewhat subjective...
Brightly glowing hot objects radiate fairly ___ spectrum.
Lasers and light-emitting diodes give off ____ light; or light having a single frequency.
A light year is a measure of time.
A student sitting 10m away from projection screen gets __ the light as a student 5m away.
A firefly's light is an example of what kind of light?
We can see visible spectrum lines when light passes through what object?
Using a spectroscope a photo of line spectra can show what elements are heated make the light. The picture is made with a ___.
The rainbow contains all possible colours.
What are the three additive primary colours?
Red, greens, and blue
There is a specific wavelength for magenta.
Pigments are made by ____ certain colours and ____ others.
What indicates the intensity of a colour?
What indicates the light or darkness of a colour?
What kind of reflection does a sheet of paper produce?
What kind of reflection does aluminum foil produce?
The angle of ____ equals the angle of ____.
What kind of image does a flat plane produce?
Where do light rays converge after reflecting off a concave mirror?
Convex mirrors can produce only virtual images.
What is the optical property that's the ratio or the speed of light in a vacuum to the speed of light in transparent material?
Index of refraction
If all the incident light rays reflect off a boundary between two transparent mediums instead of passing through. They experience ____.
Total internal reflection
A rainbow is an example of what phenomenon?
Convex lenses are known as ___.
Concave lenses are known as ___.
Telescopes and microscopes both have a long focal point.
What is inverse square law?
Moving twice as far from a light source gives you 1/4 the luminescence
What is incandescence?
Light from objects that are heated until they glow
What is fiber optics?
Growing field of technology with diverse applications
In the quantum model, electrons ___.
Occupy regions of space
The main purpose of neutrons is to ___.
Hold the nucleus together.
What is the charge of the electron?
What is the charge of the proton?
What is the charge of the neutron?
To know the element of an atom you need to know___.
How may protons it has
The number of protons is the same as ___.
Today's model of the atom is more workable but not necessarily closer to real life.
Many basic ideas of Dalton's atom model are still the same.
The radiation in a microwave is similar to that emitted when atoms undergo nuclear decay.
Thomson's plum pudding model resulted from him discovering the ___.
Rutherford's model added the ___ to the atom.
In Bohr's model, electrons orbit at specific distances from the nucleus called ___.
What is the name of the current atomic model?
Which subatomic particle determines an atom's chemical identity?
Atoms with the same number of protons but different numbers of neutrons are known as ___.
From a chemistry point of view the ___ energy level of the atom is the most important.
Radioactivity is the result of atoms with ___ nuclei.
Alpha particles are identical to ___ nuclei.
A beta particle is an electron that is produced during the decay of a ___.
What is it called when atoms split into smaller particles?
What do stars rely on for their energy?
What are the products of radioactivity?
Alpha, beta, and gamma rays
Why are certain elements radioactive?
What is the heaviest atomic particle?
Nuclear decay can change one ___ to another.
Beta particles are the same as ___.
Where can nuclear fission occur?
In a nuclear reactor
In isotopic notation, what does the number in the top left represent?
Protons + neutrons
In isotopic notation, what does the number in the bottom left represent?