A)The Chunk is most likely to be which type of metal ? a.brass b.lead c.tin d.co

Question

A)The Chunk is most likely to be which type of metal ?

a.brass
b.lead
c.tin
d.copper

B)When water freezes, what happens to the temperature of the surrounding air?

a. The air gets colder because of its proximity to the ice.
b. The air gets warmer because the forming ice gives heat up.
c. The air gets colder because it gives some of its heat to help the water freeze.
d. There is no effect on the temperature of the air.

C) When water vapor (steam) condenses what happens to the temperature of the surrounding air?

a. The air gets warmer because of its proximity to the condensing steam.
b. The air gets warmer because the condensing water gives heat up.
c. The air gets colder because it gives some of its heat to help the water condense.
d. There is no effect on the temperature of the air.

D) Why does warm air rise?

a. It is natural for warm air to rise; this helps keep a steady supply of cooler air near the Earth.
b .Warmer air is less dense than colder air and naturally floats to the top. c. Warm air is generated by combustion, which uses oxygen. The deficiency of oxygen makes the warm air lighter, so it rises.
d. Warm air radiates its heat away; since heat rises, the air travels with it.

Explanation / Answer

A) a.brass B) c. The air gets colder because it gives some of its heat to help the water freeze. C) b. The air gets warmer because the condensing water gives heat up. D) a. It is natural for warm air to rise; this helps keep a steady supply of cooler air near the Earth.

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