How do igneous rocks differ from each other.

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Answer 1

Answer: Although hand specimen identification is some what of an art; igneous rocks are classified using two critiria:
•Texture
•Chemical and mineral composition
Most of the time the rock name, such as basalt or granite, reflects the chemical composition. The minerals and textures are used as adjectives that modify the rock name. You might see a name like an olivine basalt or a quartz porphyry rhyolite.

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OK THIS WILL WORTH 25 POINTS IF BEST: WHAT IS THE ONLY NATURAL SUBSTANCE FOUND ON EARTH THAT CAN BE 3 STATES OF MATTER?

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Every natural substance CAN exist as solid, liquid, or gas, if you make the temperature and pressure right. The only one that exists in all three states all the time, all around us, in the same range of temperature and pressure found naturally on Earth and in which we live comfortably, is water.

which phenomenon is most directly responsible for earth’s magnetic field? Earth spinning on its axis. The moon's gravitational pull on earth? Earth's revolution around the sun? The moon's revolution around earth?

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Earth spinning on its axis

After the diver jumps forward from the diving board, the force of gravity will accelerate the diver parallel to the direction of motion true or false

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I think that it is false

HELP FAST CORRECT ANSWERS ONLY 20PTSSelect the correct locations on the image.

Where would you expect a hot main-sequence star with high luminosity to be located on the following HR diagram?