a mercury in glass thermometer reads -20° at the ice point and 100°at the steam point. calculate the Celsius temperature corresponding to 70°on the thermometer.​

120 deg Unknown = 100 deg Celsius since we know that the ice point is at

0 deg Celsius and the steam point is 100 deg Celsius

So you have 1.2 deg U / 1 deg C

70 deg U / (1.2 deg U / 1 deg c) = 58.3 deg C    (temperature in deg Celsius)

Or 58.3deg C * 1.2 deg U / 1 deg C = 70 deg U

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.