heat does not necessarily expand.. the varying temperatures causes different elements that make up an object to expand or contract
e.g. tar on the road expands in the heat and contracts in the cool and therefore cracks are formed in the road.
it causes air to expand
it causes air to expand
Cold causes matter to contract. Heat causes matter to expand.
heat causes gases to expand
heat causes gases to expand
Heat causes expansion.
Heat causes ojects to expand . The object also will melt if it is a solid , and will turn into gas if heated.
fire/heat makes matter expand the melt away
Heat causes Mercury in the thermometer to expand, where as when it is cooled, it contracts.
i believe heat does expand... I'm not sure though. i think the particles separate to have room to vibrate. that causes the heat to expand. :)
When things are heated, the heat causes the molecules to move faster and that forces them farther apart, causing the item to expand.
Marshmallows expand in the microwave because the heat causes the air bubbles trapped inside them to expand, making the marshmallows puff up and increase in size.