Igneous Rocks

What does "ignis" mean?

• in

• out

• fire

• glassy

Which type of igneous rock forms deep inside the earth's surface?

• extrusive

• intrusive

Tags

NGSS.MS-ESS2-1

Which type of igneous rock forms on the outside of earth's service.

• extrusive

• intrusive

What kind of texture would the following be?

• Fine-grained

• Coarse-grained

• Glassy

• Porphyritic

The composition of this igneous rock would most likely be:

• Felsic

• Andesitic

• Mafic

• Ultramafic

What type of composition would this rock most likely have?

• Felsic

• Andesitic

• Mafic

• Ultramafic

Tags

NGSS.MS-ESS2-1

Which texture type takes the longest to cool?

• Coarse-grained

• Fine-grained

• Porphytic

• Glassy

Which texture type takes the shortest time to cool?

• Coarse-Grained

• Fine-Grained

• Porphorytic

• Glassy

Ultramafic rocks are under 45% silica.

• True

• False

Tags

NGSS.MS-PS1-1

Porphyritic rocks have:

• small crystals, fast cooling

• no crystals, instant cooling

• large crystals, slow cooling

• both large and small crystals, slow cooling with different minerals