What is the difference between a control group and an experimental group?

Control Group: Group that is being controlled .This group doesn´t receive the treatment from the researchers

Experimental Group:Group that is being Experimented and that receives the testing

An experimental group is the group in an experiment that receives the variable being tested. One variable is tested at a time. The experimental group is compared to a control group, which does not receive the test variable. In this way, experimental groups are used to find answers in an experiment.

The difference between a control group and an experimental group is that the independent variable is changed for the experimental group, but is held constant in the control group.

In this way we came to know the result of the experiment by calculating the difference between them.

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.