1) 1. Define a light-year. a) The distance between the Sun and the nearest star b) The distance Earth travels in its orbit around the Sun c) The time that it takes light to travel between the sun and the nearest star d) The distance light travels in one year 2) Define the frequency of a wave. a) The number of waves passing a point every second b) The distance between one wave crest and the next c) The height of the waves 3) Define the wavelength of a wave. a) The number of waves passing a point every second b) The distance between one wave crest and the next. c) The distance between a wave crest and the next trough. d) The height of the waves 4) A telescope that uses lenses is called a) Reflecting telescope b) Refracting telescope c) Simple telescope d) Compound microscope 5) There are many extremophiles on the Earth. An example is a methanogen. A methanogen is an example of: a) An autotroph b) A thermotroph c) A chemoautotroph d) A geothermotroph 6) For an electron to change from lower energy level to an excited energy level it must: a) Absorb energy b) Emit energy c) Be metastable d) None of the above 7) Identify the organelle that is responsible for breaking down sugar and releasing the energy for use by the cell.  a) Nucleus b) Mitochondrion c) Vacuole d) Chloroplast 8) Water is a molecule which is vital for life. It is made up of: a) Carbon and Oxygen b) Hydrogen and Carbon c) Hydrogen and Oxygen d) Carbon, Oxygen and Hydrogen

Astro science quiz

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