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They expand in heat to allow blood to reach the extremities to be cooled..
Exactly the opposite is true when there cold.. Blood is drawn away from the extremities to help keep vital organs warmer.
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∙ 12y ago
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Why must oven shelves not fit tightly when the oven is cold?
Oven shelves contract while cold. When heat is introduced, they expand (or grow larger) and can damage your oven walls.
Does gold expand under hot or cold water?
Heat causes expansion.
Why do humans shiver when cold?
Muscles expand and contract as a way to produce heat for the body.
Why do hot beakers crack in cold wale?
im assuming you meant to type water... this happens because heat makes things expand, whilst cold makes things contract. by putting a hot beaker in cold water, you put too much strain on the beaker because it is changing size so fast
What would happen if there were no gaps in a bridge?
Expansion and contraction with heat and cold causes the road to swell and shrink. the gaps are for that purpose so the road or bridge would buckle and break if they were not there! Before this was discovered things broke often
How does matter react to cooling?
Cold causes matter to contract. Heat causes matter to expand.
How temperature weather rocks?
Rocks expand due to heat and contract due to cold. Thus, due to unequal expansion and contraction ,the rocks tend to break and get weathered. Rocks expand due to heat and contract due to cold. Thus, due to unequal expansion and contraction ,the rocks tend to break and get weathered.
Does the human body expand or contract and why?
I think we can.As our human body which is a solid gains heat , they expand and contract when they lose heat.And solids do expand and contract.
Why do oven trays expand and contract?
heat makes metal expand.
Why do concrete patios crack?
A concrete patio usually cracks due to heat cold. If it is to cold it contract and break. If it is to hot it will expand and break. Then water can seep into those cracks and freeze causing the crack to expand
Why do object expand?
Objects contract or expand depending on the temperature. Cold makes things contract, heat makes things expand. However, there are some exceptions. For example, water expands when it turns to ice. This is due to the process of crystallization. The reason that objects expand and contract is found at the atomic level. When an object is warm, its molecules move faster and spread out, making that object expand. However, when an object is cold, the atoms slow down and move back together, making the object contract.
Why must oven shelves not fit tightly when the oven is cold?
Oven shelves contract while cold. When heat is introduced, they expand (or grow larger) and can damage your oven walls.
Why do hot atoms move colder than warm atoms?
Because heat makes things expand, and cold makes things contract.("'\(o.o)/"')
Why do roads over bridges have small gaps in them?
To allow them to expand and contract with heat and cold. Without those, the road would end up buckling.
What is the effect of heat on liquids?
It will cause the liquid to either expand or contract.
Why do sidewalks have lined joints built into them?
because they expand and contract with heat.
Does glass expand with heat?
Yes glass does expand a little with heat but it contacts more when cold and can crack if not carefully watched.
