NAME

Question types


Start with


Question limit

of 136 available terms
(4 exact duplicates found)

Advertisement Upgrade to remove ads
Print test

5 Written questions

4 Matching questions

  1. The energy levels of an element and its ion are the same.
  2. Thermal radiation is defined as

    A) radiation produced by a hot object.
    B) radiation in the infrared part of the spectrum.
    C) radiation that depends only on the emitting object's temperature.
    D) radiation in the form of emission lines from an object.
    E) radiation that is felt as heat.
  3. At extremely high temperatures (e.g., millions of degrees), which of the following best describes the phase of matter?

    A) a gas of rapidly moving molecules
    B) a plasma consisting of positively charged ions and free electrons C) a gas consisting of individual, neutral atoms, but no molecules
    D) a plasma consisting of rapidly moving, neutral atoms
    E) none of the above (At these extremely high temperatures, matter cannot exist.)
  4. Which forms of light are lower in energy and frequency than the light that our eyes can see?

    A) infrared and radio
    B) ultraviolet and X rays
    C) visible light
    D) infrared and ultraviolet
  1. a C) radiation that depends only on the emitting object's temperature.
  2. b B) a plasma consisting of positively charged ions and free electrons
  3. c A) infrared and radio
  4. d False

5 Multiple choice questions

  1. C) molecules go from the solid phase to the gas phase.
  2. False
  3. A) Electrons orbit the nucleus rather like planets orbiting the Sun.
  4. B) It absorbs red light and reflects green light.
  5. True

5 True/False questions

  1. Energy and power are different words for the same thing.False

          

  2. The planet Neptune is blue in color. How would you expect the spectrum of visible light from Neptune to be different from the visible-light spectrum of the Sun?

    A) The two spectra would have similar shapes, except Neptune's spectrum would be missing a big chunk of the red light that is present in the Sun's spectrum.
    B) The two spectra would have similar shapes, except Neptune's spectrum would be missing a big chunk of the blue light that is present in the Sun's spectrum.
    C) Neptune's spectrum would peak at a much longer wavelength than the Sun's spectrum.
    D) There is no way to predict the answer to this question, since planets and stars are made of such different things.
    A) The two spectra would have similar shapes, except Neptune's spectrum would be missing a big chunk of the red light that is present in the Sun's spectrum.

          

  3. Which of the following statements about thermal radiation is always true?

    A) A hot object emits more radiation per unit surface area than a cool object.
    B) A cold object produces more total infrared and radio emission per unit surface area than a hot object.
    C) A hot object produces more total infrared emission than a cooler object.
    D) All the light emitted by hot object has higher energy than the light emitted by a cooler object.
    A) A hot object emits more radiation per unit surface area than a cool object.

          

  4. The most common isotope of oxygen has atomic number 8 and atomic weight 16. Another isotope has two extra neutrons. What are the atomic number and atomic weight of this isotope?A) 26 protons, 30 neutrons, 26 electrons

          

  5. Any object moving relative to Earth will have a Doppler shift.1. Hotter objects emit more radiation per unit surface area.
    2. Hotter objects emit photons with higher average energy.

          

Create Set