Trivial Practice Quiz science-technology - Test 158 | Englishfreetest.com

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    Question 1: For a few seconds after exposure to strong light we continue to see the shape of the light source even after we dont look at it any more. What are these fleeting images in our brain called?
    A. Echoimages
    B. Preimages
    C. Afterimages
    D. Printouts
    Question 2: According to the color theory what should red paint look viewed under blue light?
    A. Transparent
    B. Black
    C. White
    D. Purple
    Question 3: Which of the following colors cannot be a pure spectral color?
    A. Cyan
    B. Purple
    C. Yellow
    D. Orange
    Question 4: Which of the following colors is an example of a Tyndall effect color?
    A. The red of the red apple
    B. All of these
    C. The color of the human skin
    D. The blue of the human iris
    Question 5: In most computer monitors which of these colors is not accomplished by simply emitting in the respective wavelength?
    A. Green
    B. Red
    C. Orange
    D. Cyan
    Question 6: What important work connected to color theory did the international group of experts known as the Commission Internationale de leclairage (CIE) create in 1931?
    A. Mapped the frequency of basic colors in the spectrum
    B. Developed a mathematical model of color
    C. Developed the color model of the universe
    D. Defined the primary, secondary, and tertiary colors
    Question 7: What two main characteristics measure the properties of light in the human visible range?
    A. Frequency and intensity
    B. Wavelength and speed
    C. Speed and intensity
    D. Wavelength and frequency
    Question 8: Which of the statements about the spectral colors and light sensation in humans is true?
    A. Spectral light causes equivalent color sensations in most mammal species.
    B. In order to cause a sensation of a certain color the light should be emitted only in this color.
    C. There are more possible spectral combinations than color sensations in the human brain.
    D. There are more possible color sensations in the human brain than spectral combinations.
    Question 9: Which species has the most complex color vision system in the animal kingdom?
    A. Mantis shrimp
    B. Honey- and bumblebees
    C. Fat-tailed dunnart
    D. Pigeons
    Question 10: The mean distance between the Sun and the Earth is about 93 million miles, which is also called what by astronomers?
    A. Light Year (LY)
    B. Astronomical Unit (AU)
    C. Solar Constant (SC)
    D. Astronomical Mile (AM)
    Question 11: How long does it take light to travel from the Sun to the Earth?
    A. Less than 1 minute
    B. Just over 34 minutes
    C. It arrives instantaneously
    D. About 8 minutes
    Question 12: The Sun creates its radiation (heat) by the nuclear fusion between which two elements?
    A. Helium and Oxygen
    B. Carbon and Helium
    C. Hydrogen and Helium
    D. Hydrogen and Carbon
    Question 13: The Sun contains about what percentage of the entire solar systems mass?
    A. 28%
    B. 98%
    C. 78%
    D. 58%
    Question 14: How long does it take the Sun to rotate once upon its axis?
    A. About 24 to 28 days
    B. The Sun does not rotate at all
    C. About 24 to 30 hours
    D. About once a year
    Question 15: The period of time between maximum and minimum sunspot activity, known as the Solar Cycle is about how many years in length?
    A. 51 years
    B. 101 years
    C. 1 year
    D. 11 years