Question

URGENT!!!!!!!!!!!!Which are examples of convection currents? Check all that apply.

marshmallows toasting over a campfire


a pot being heated by an electric burner


rice moving in a pot of water that is being heated a radiator that emits warm air and draws in cool


air a hot air balloon rising and falling in the atmosphere

Answer 1

I believe a pot of water that is being heated by a electric burner. This is because the warmer water moves to the top and the cooler water moves down to the bottom of the pot. This causes a circular motion. The next example of convection heat is a hot air ballon rising and falling in the atmosphere. A radiator is also because the hot air is drawn out the top and the cooler air is drawn to the bottom.

Answer 2

Step-by-step explanation:

Convection is defined as a process in which upon heating a fluid (liquid or gas) there occurs rising of hot (less dense) dense molecules and sinking of cold (more dense) molecules.

For example, when rice in a pot of water are moving then it means the convection current arises in water when radiator that emits warm air and draws in cool.

As a result, rice that has absorbed heat become light in weight and hence they will rise and cold (more dense) rise that have not absorbed heat yet will sink at the bottom.

Similarly, when a hot air balloon is rising and falling in the atmosphere then hot (less dense) gas molecules causes them to rise in the air whereas cold molecules (more dense) will cause it to fall in the atmosphere.

Therefore, we can conclude that out of the given options examples of convection currents are as follows.

• rice moving in a pot of water that is being heated a radiator that emits warm air and draws in cool.

• air a hot air balloon rising and falling in the atmosphere.