Fill in the blanks.
Gases can be
into a smaller space.
a.
An inedible substance cannot
b.
Cold air is
..... than hot air.
C.
d.
Ventilators allow
......
air to escape from the room.
Movement of hot and cold air causes
..... currents.
e.
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Answers
Answer:
Because the particles are moving about, a gas will fill any container that it is put into. Because there is space between the particles, they can be squashed into a smaller volume when the gas is compressed.
a)If you say that something is inedible, you mean you cannot eat it, for example because it tastes bad or is poisonous.
b)Hot air is lighter than cold air. The reason fr this is when air gets heated up it expands and becomes less dense than the air surrounding it also the distance between the molecules increases. So the less dense air floats in the much denser air just like ice floats on water as ice is less dense than water.
c)process of supplying fresh air to an enclosed space and removing from it air contaminated by odors, gases, or smoke. A building may have a roof ventilator to allow the rising warm air to escape. ... If there is an opening to the outside at the bottom of the building, fresh, cool air will be drawn in.Temperature differences can cause air currents because warmer air is less dense than cooler air, causing the warmer air to appear "lighter." Thus, if the warm air is under the cool air, air currents will form as they exchange places. Air currents are caused because of the uneven heating of Earth's surface.
Explanation:
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Explanation:
gases can be into a smaller space