Biology

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15 May, 19:27

Match the following. Match the items in the left column to the items in the right column. 1. accretion the tendency of an object to remain in its current state; if it is at rest, to remain at rest, and if it's in motion, to remain in motion 2. cryosphere the frozen water or ice system of a planet 3. Doppler effect emission of energy 4. inertia a change in the frequency of sound or light waves caused by the movement of the waves' source 5. nebula enormous cloud of gas and dust in space 6. radiation an explosion of a star that emits large amounts of matter and energy 7. supernova process of steady growth of an object by a steady accumulation of material