Physics Questions - Module #17

  1. When water freezes it
    1. absorbs energy
    2. gives off energy
    3. neither
    4. both

  2. You wet your finger before you briefly touch a clothes iron. The protection (from wetting your finger) would be higher if the "heat of vaporization" of the water is
    1. higher
    2. lower
    3. the same
    4. zero
    5. all of the above

  3. When a metal is heated until it vaporizes, it
    1. absorbs energy
    2. gives off energy
    3. neither
    4. both

  4. As your neighborhood pond is in the process of freezing over, it ___ the surrounding air.
    1. cools
    2. warms
    3. neither cools nor warms
    4. both warms and cools

  5. Water at 0 degrees C will warm up faster than ice at 0 degrees C, because
    1. water is more liquid
    2. ice is more solid
    3. ice absorbs heat when it melts
    4. ice gives out heat when it melts
    5. water likes ice
    6. there is no ice at the earth's equator

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