If a liquid or gas has regions of high temperature and low temperature, then the atoms will move in a predictable direction. We call this a CONVECTION CURRENT.

The atoms in a LIQUID or a GAS are .
When a lot of atoms in a liquid or a gas move in the same general direction it is called a .
The water on our planet is also called the .
Currents that are caused by uneven temperatures are called .
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Iwould sure like to answer your question but i honestly just don’t know

Earthplanet yplanet y5=earth     *many different equationsplanet x1.5=earthplanet x is two times planet yobject 5,2500 mass5,1,3,2,4object 1 is four times obect 4

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.