In a convection cell, matter rises when it expands because this makes it less dense than its surroundings.

Here's why:

1. Convection cells involve the circular motion of matter due to differences in temperature and, consequently, density.

2. When matter is heated, it gains energy which causes the particles to move faster and spread out, or expand.

3. This expansion decreases the density of the matter (it becomes less dense) because density is defined as mass per unit volume and the volume has increased.

4. Since less dense matter is lighter than the surrounding cooler matter, it rises.

5. As it rises and moves away from the heat source, it cools down, contracts (becomes denser) and sinks back down, completing the convection cell.

So, the correct answer is "expands…….less dense".

Question

In a convection cell, matter rises when it expands because this makes it less dense than its surroundings.

Here's why:

1. Convection cells involve the circular motion of matter due to differences in temperature and, consequently, density.

2. When matter is heated, it gains energy which causes the particles to move faster and spread out, or expand.

3. This expansion decreases the density of the matter (it becomes less dense) because density is defined as mass per unit volume and the volume has increased.

4. Since less dense matter is lighter than the surrounding cooler matter, it rises.

5. As it rises and moves away from the heat source, it cools down, contracts (becomes denser) and sinks back down, completing the convection cell.

So, the correct answer is "expands…….less dense".

Knowee AI · Accepted Answer

In a convection cell, matter rises when it expands because this makes it less dense than its surroundings.

Here's why:

1. Convection cells involve the circular motion of matter due to differences in temperature and, consequently, density.

2. When matter is heated, it gains energy which causes the particles to move faster and spread out, or expand.

3. This expansion decreases the density of the matter (it becomes less dense) because density is defined as mass per unit volume and the volume has increased.

4. Since less dense matter is lighter than the surrounding cooler matter, it rises.

5. As it rises and moves away from the heat source, it cools down, contracts (becomes denser) and sinks back down, completing the convection cell.

So, the correct answer is "expands…….less dense".

In a convection cell, matter rises when it _ because this makes it than its surroundingsGroup of answer choicescontracts…….less densecontracts…….less denseexpands…….less denseexpands……. denser

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In a convection cell, matter rises when it _________ because this makes it ________ than its surroundingsGroup of answer choicescontracts…….less densecontracts…….less denseexpands…….less denseexpands……. denser

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In a convection cell, matter rises when it _ because this makes it than its surroundingsGroup of answer choicescontracts…….less densecontracts…….less denseexpands…….less denseexpands……. denser