Physics Questions - Module #17

Feel free to use the questions below to check (or improve) your understanding of the concepts in this physics module.

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