English, 04.02.2020 19:44 Haven263

Read the following excerpt:

have you ever wondered what keeps a hot air balloon flying? the same principle that keeps food frozen in the open chest freezers at the grocery store allows hot air balloons to fly. it's a basic principle: hot air rises and cold air falls. so while the super-cooled air in the grocery store freezer settles down around the food, the hot air in a hot air balloon pushes up, keeping the balloon floating above the ground. in order to understand more about how this principle works in hot air balloons, it to know more about hot air balloons themselves.

answer the following question:

using the information presented in paragraph 1, it can be understood that which of the following statements is false?

a. air goes up and out the top of a chimney when you light a fire.
b. cool air collects about the ceiling when you open a refrigerator.
c. smoke from a candle rises after you blow out the flame.
d. cold air coming from an air conditioning vent settles about the floor.

Answers: 2

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