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Heat is caused by molecules vibrating and hitting one another. The hotter the air the more the molecules vibrate and the bigger space each molecule needs. This causes the air to expand and its density to fall.
As air cools, the vibrations slow down and the molecules need less room. This causes the air to contract and its density will go up.
What else can I help you with?
How do you make metal contract?
They expand ------- No, normally metals expand when heated.
Why did they make a refrigerator?
to keep all the cold or frozen things nice and cold
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
Does gold expand under hot or cold water?
Heat causes expansion.
Why fingers expand in heat and contract in cold?
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.
How do you make metal contract?
They expand ------- No, normally metals expand when heated.
Why does ammonia make things cold?
Ammonia's ability to make things cold is mainly due to its evaporation process. When liquid ammonia evaporates, it absorbs heat from the surrounding environment, causing a cooling effect. This principle is utilized in refrigeration systems where ammonia is compressed and then allowed to expand, resulting in a drop in temperature.
Why do hot atoms move colder than warm atoms?
Because heat makes things expand, and cold makes things contract.("'\(o.o)/"')
How do you make your conkers shiny?
YOU polish it but don't keep it in a warm or cold just middle tempretaure because if it gets cold it would expand or warm would make it unravel
What is the scientific law of expand and contrast?
Expand- Hot Contrast- Cold
Why did they make a refrigerator?
to keep all the cold or frozen things nice and cold
Does sprite explode when cold why or why not?
when liquids freeze they expand so if you freeze anything in a full can or bottle it will have no space in which to expand and hence the can or bottle will explode. If you're freezing anything you should make sure there is space in the top of the container for it to expand.
Can cold water make orbeez bigger?
No, cold water will not make Orbeez bigger. Orbeez absorb water regardless of its temperature and will expand in size when placed in water. Temperature does not affect the expansion process.
When things get bigger you say they contract converge or expand?
They expand.
Why you keep things in the fridge?
to make things cold and some food can get rotten if there stay outside
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
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.
