CONVECTION- Heater in the hot air ballon heats the air.The air insite is trapped causing the ballon to rise?

Geography

1 answer:

lukranit [14]2 years ago

3 0

Explanation:

Heat transfer by convection involves gases and liquids as a result of density differences when they are heated.

In the hot air balloon, the air closer to the heater is warmed. This air becomes lighter and it rises. This in turn pushes the balloon up. The cold air away from the heater is denser and begins to sink.

This exchange of hot and cold air sets up convection cells within the balloon and this how heat transfer is attained.

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Since i live in it: America

IF we go by the British:

first they landed at Roanoke and Jamestown. Jamestown was successful.
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#3 expansion: The successful revolt of the Texans
#4 expansion: Mexico succeeds most of their northern lands.
#5 expansion: Gadsen purchase: brings the US mainland's border too today.

Many difficulties include:
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2) hard to make livings
3) Indians, robbers, etc
4) diseases, exposure, etc
5) ran out of supplies
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hope this helps

if you need anymore examples, drop a comment below

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Read 2 more answers

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Helen [10]

Answer:

Abiotic factors

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Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals.

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